The International Space Station (ISS] orbits the earth at an altitude of 400 km_ a) What its orbital speed? b) What is its orbital period?

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Answer 1

The International Space Station orbits the earth at an altitude of 400 km with an orbital speed of 7.66 km/s, and its orbital period is about 92.68 minutes.

The International Space Station (ISS] orbits the earth at an altitude of 400 km.

Its orbital speed is 7.66 km/s, and its orbital period is about 92.68 minutes.

a) Calculation of orbital speed.

The force of gravity, which pulls it towards the planet, balances out the centrifugal force, which pulls it away from the planet.

The satellite's velocity must be precisely set to accomplish this.

The formula for calculating the velocity of a satellite in orbit is.

v = √(GM/r)

wherev = the velocity of the satellite

GM = the universal gravitational constant × the mass of the Earth

r = the distance between the center of the Earth and the satellite

v = √(6.67 × 10⁻¹¹ × 5.97 × 10²⁴/6.378 × 10⁶ + 400) = 7.66 km/s

b) Calculation of orbital period.

The orbital period of an object in orbit around another object is the time it takes for one orbit to be completed.

Since the ISS is in a low-Earth orbit, the formula for calculating its orbital period is:

T = 2π√(r³/GM)

where, T = the period of the orbit

GM = the universal gravitational constant × the mass of the Earth

r = the distance between the center of the Earth and the satellite

T = 2π√(6.378 × 10⁶ + 400)³/(6.67 × 10⁻¹¹ × 5.97 × 10²⁴) = 92.68 minutes.

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Related Questions

What is the continuous process of natural change in early adulthood called?

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"The continuous process of natural change in early adulthood called aging."

Early adulthood marks the start of ageing, a slow, continuous process of natural change. Many bodily processes start to progressively deteriorate in the early middle years.

The gradual loss of useful traits in living things is known as biological ageing. The term "senescence" can be used to describe both cellular senescence and organismal senescence.

At the biological level, ageing is caused by the buildup of numerous types of cellular and molecular harm over time. As a result, physical and mental abilities gradually deteriorate, disease risk increases, and eventually, mortality occurs.

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It takes 10 J of energy to move 2 C of charge from point a to pointb. what is the potential difference between points a andb?
a. 0.50 v
b. zero
c. 0.20 v
d. 5 v
e. 20 v

Answers

The potential difference between points a and b is 5 V.

We know this by dividing the energy (J) by the charge (C). We know that it takes 10 J of energy to move 2 C of charge from point a to point b. To find the potential difference between points a and b, we can use the equation for potential difference: V = E/Q,

Here V is the potential difference, E is the energy, and Q is the charge. In this case, we have E = 10 J and Q = 2 C. Substituting the values we get, V = 10 J/2 C= 5 V. Therefore, the potential difference between points a and b is 5 V.

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the work done by a conservative force is indicated in the figure for a variety of different paths connecting the points a and b.

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The work done by the conservative force on Path 1 is -3 J.

What is the relationship between work done and the path taken?

The relationship between work done and the path taken depends on the type of force involved in the work.

If the force is conservative, then the work done depends only on the initial and final positions of the object and not on the path taken. In other words, the work done by a conservative force is independent of the path taken.

On the other hand, if the force is non-conservative, such as friction or air resistance, then the work done does depend on the path taken. In this case, the work done is equal to the integral of the force along the path taken.

Since the force is conservative, it is independent of the path taken.

Work done by the force on Path 1 = 15 J - 18 J

Work done by the force on Path 1 = -3 J

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Star A is more massive than star B. Both are main-sequence stars. Therefore, star A is _____ than star B. (Choose all that apply.)
a. more luminous
b. less luminous
c. hotter
d. colder
e. larger
f. smaller

Answers

when both the stars have the same spectral classification, the star with the most massive core, that is, Star A, will be larger than Star B. Hence, we can conclude that star A is larger than star B because it is more massive. option e. larger correct.

Star A is more massive than star B. Both are main-sequence stars. Therefore, star A is larger than star B.The main-sequence stars are stars that are continuously fusing hydrogen into helium in their cores. The fusion reaction creates enough energy to maintain a balance between the inward pull of gravity and the outward push of radiation pressure.Stars' brightness, color, size, and lifespan are determined by their mass. The larger the mass, the more luminous, hotter, and larger the star.

In the case of the two stars, Star A is more massive than Star B, which means it will have a higher luminosity, hotter temperature, and larger radius.Star A is bigger than star B because it is more massive. The size of a star is proportional to its mass, temperature, and luminosity, as per the HR diagram. When a star's mass increases, so does its temperature, making it larger in size. When the star's mass decreases, the temperature decreases, resulting in a smaller size.

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If the acceleration of the ball is 2.10 × 104 m/s2, and 1.85 ms (1 ms = 10-3 s) elapses from the time the ball first touches the mitt until it stops, what is the initial speed, in mph, of the ball?

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Ball's initial speed, in mph, is approx: -86.93 mph/s

The initial speed of the ball, in mph, given that the acceleration of the ball is 2.10 × 104 m/s² and 1.85 ms (1 ms = 10-³s) elapses from the time the ball first touches the mitt until it stops can be calculated as follows:

Step 1: Convert acceleration to mph/s².

The conversion factor for m/s² to mph/s² is: 1 m/s² = 2.23694 mph/s²

Now, acceleration in mph/s² = 2.10 × 10⁴ × 2.23694 = 47,045 mph/s²

Step 2: Convert time to secondsThe time given in milliseconds must be converted to seconds, thus:

1.85 ms = 1.85 × 10⁻³ s

Step 3: Calculate the initial speed using the equation:

v = u + at

Where:

v is the final velocity (zero in this case)

u is the initial velocity

t is the time takena is the acceleration

Therefore:

u = v - at

u = 0 - (47,045 mph/s² × 1.85 × 10⁻³ s)

u = -86.93 mph/s or -38.78 m/s

Note: The negative sign indicates that the velocity is in the opposite direction to the acceleration.

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dominique places 0.5 kg in the bucket and 9.5 kg in the cart and allows the setup to oscillate with an amplitude of 2 cm. as the paper moves horizontally with constant speed v past the oscillating pencil, the pencil draws the graph shown. each square on the graph represents 1 cm. recall that the pencil pointed to the highest line of the grid when neither the bucket nor the cart carried any mass, and everything was at rest. calculate the speed v that the paper was moving and include units in your answer. explain each part of your calculation with words

Answers

The speed of wave v that the paper was moving is -4 cm/s for an amplitude of 2 cm.

To solve this problem, we need to use the concept of simple harmonic motion and relate it to the motion of the pencil on paper. Here's how we can approach it:

y = A cos(ωt)

where A is the amplitude 2 cm, ω is the angular frequency, and t is time.

We need to find the value of v that produces the observed graph. Let's first determine the period, T, of the oscillation of the bucket and cart. The period is the time it takes for one complete oscillation, and it is related to the angular frequency by:

T = 2π/ω

To find ω, we can use the fact that the displacement of the bucket and cart follows a cosine function with a period of T/2 (i.e., it takes half the period to go from the maximum displacement to the minimum displacement). Therefore, we have:

y = A cos(2πt/T)

Taking the derivative with respect to time gives:

dy/dt = -A (2π/T) sin(2πt/T)

At the maximum displacement (when the pencil draws a vertical line), sin(2πt/T) = 1, and the velocity of the bucket and cart is therefore:

v = -A (2π/T)

Substituting A = 2 cm and T = 1/f, where f is the frequency of oscillation, we get:

v = -2πf(2 cm)

Therefore, the frequency is:

f = 1/T = 1/(2π/ω) = ω/(2π)

Using the amplitude of 2 cm and the frequency of 1/2π, we can calculate the velocity v as:

v = -2πf(2 cm) = -2π(1/2π)(2 cm) = -4 cm/s

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The question is -

Dominique places 0.5 kg in the bucket and 9.5 kg in the cart and allows the setup to oscillate with an amplitude of 2 cm. as the paper moves horizontally with constant speed v past the oscillating pencil, the pencil draws the graph shown. each square on the graph represents 1 cm. recall that the pencil pointed to the highest line of the grid when neither the bucket nor the cart carried any mass, and everything was at rest. calculate the speed v that the paper was moving and include units in your answer. explain each part of your calculation with words.

What is the relationship between the number of coils in a solenoid and the emf induced in it by a change in the magnetic flux through the solenoid?

a. The induced emf is inversely proportional to the number of coils in a solenoid.
b. The induced emf is directly proportional to the number of coils in a solenoid.
c. The induced emf is inversely proportional to the square of the number of coils in a solenoid.
d. The induced emf is proportional to square of the number of coils in a solenoid.

Answers

The relationship between emf and number of coils in solenoid is the emf is inversely proportional to the coils in the solenoid. Option A is correct.

 A solenoid is a wire coiled on a cylinder made of solid iron or steel or powdered iron. It is used as electromagnets, electromagnetic inductors etc. It has a large number of turns or coils around it and acts as a very strong magnetic field.

The magnetic field created is governed by the equation, B= μ₀nI.

B is the magnetic flux, μ₀ is the magnetic constant. n is the number of turns and I is the current flowing through the solenoid.

B = μ₀nI

B/I =  μ₀n

So, the emf and the number of turns will be inversely proportional.

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The accelerating force of the wind on a small 300-kg sailboat is 780 N northeast. If the drag of the keel is 552 N acting west, what is the acceleration of the boat?
A. 4.4 m/s2 due east
B. 1.8 m/s2 due north
C. 2.6 m/s2 northeast
D. 3.2 m/s2 north by northwest
E. 0.23 m/s2 due east

Answers

If the drag of the keel is 552 N acting west,  the acceleration of the boat is 1.8 m/s² due North. (option B)

We can break the given forces into their x- and y-components:

The accelerating force of the wind (780 N northeast) has an x-component of 780 cos(45°) ≈ 552.4 N to the east and a y-component of 780 sin(45°) ≈ 552.4 N to the north.The drag of the keel (552 N west) has an x-component of -552 N to the west and a y-component of 0 N.

To find the acceleration of the boat, we need to sum up the x- and y-components of the forces and divide by the mass of the boat:

Summing the x-components, we get:

Fx = 552.4 N - 552 N = 0.4 N

Summing the y-components, we get:

Fy = 552.4 N + 0 N = 552.4 N

Dividing the sum of the forces by the mass of the boat, we get:

a = (Fx² + Fy²)^(1/2) / m = (0.4² + 552.4²)^(1/2) / 300 kg ≈ 1.835 m/s²

The direction of the acceleration can be found using the inverse tangent function:

θ = tan⁻¹(Fy / Fx) ≈ 90°

Since Fy is positive and Fx is close to zero, the acceleration is approximately in the direction of north, so the answer is:

B. 1.8 m/s² due north

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a hollow cylindrical conductor of inner radius 0.0148 m and outer radius 0.0322 m carries a uniform current of 3.01 a. what is the magnitude of the magnetic field at radius of 0.0162 m? type your answer here

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The magnitude of the magnetic field at a radius of 0.0162 m is 2.37 × 10⁻⁴ T.

First, we need to determine whether the radius 0.0162 m is inside the inner radius 0.0148 m or outside the outer radius 0.0322 m.

For the given cylindrical conductor,

Current I = 3.01 A

Radius r = 0.0162 m.

μ₀ (the permeability of free space) =  4π×10⁻⁷ T·m/A

Since 0.0162 m is between the inner and outer radii, we can use the formula for the magnetic field inside a hollow cylinder:

B = μ₀I/2πr

B = 4π×10⁻⁷  × 3.01 / 2[tex]\pi[/tex] × 0.0162

B = 2.37 × 10⁻⁴ T

Therefore, the magnitude of the magnetic field at a radius of 0.0162 m is 2.37 × 10⁻⁴ T.

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____________ are forces in which two interacting objects are physically in contact with each other; examples include ___________ and ______________. a. Contact forces , friction, air resistance c. Action-at-a-distance fields , gravity, electric field b. Contact forces , gravity, electric field d. None of the above. Please select the best answer from the choices provided A B C D

Answers

a. Contact forces, friction, air resistance

A 20 g particle is moving to the left at 30 m/s. How much work must be done on the particle to cause it to move to the right at 30 m/s?

Answers

The work done on a 20g particle moving to the left at 30m/s to cause it to move to the right at the same speed is 18 J.

What is work?

Work is a scalar physical quantity that is proportional to the distance moved by an object when an external force is applied to the object. It is defined as the product of force and the displacement of the object in the direction of the force, as well as the cosine of the angle between the force and displacement vectors. Work is given the SI unit of joules (J).

Formula to calculate work done:

W = F × d × cos(θ)

where W is work done, F is force, d is distance, θ is the angle between the force and displacement vectors.

In this case, we have a 20 g particle moving to the left at 30 m/s, so the force acting on it is given by:

F = ma

where m = 20 g = 0.02 kg and a = -30 m/s² (negative because it is moving to the left)

F = 0.02 kg × -30 m/s² = -0.6 N

Negative sign means that the force is acting towards the left.

We need to cause the particle to move to the right at 30 m/s, so we have to apply a force in the opposite direction. Therefore, the angle between the force and the displacement is 180°.

θ = 180°cos(180°) = -1

Therefore, the work done on the particle is given by:

W = F × d × cos(θ)

W = (-0.6 N) × (d) × (-1)

W = 0.6 d J

We want the final speed to be 30 m/s and the initial speed is also 30 m/s. So, the change in velocity, ∆v is 60 m/s (final velocity - initial velocity = 30 m/s - (-30 m/s) = 60 m/s).

We can find the displacement, d using the kinematic equation:

v² - u² = 2as

where v is the final velocity, u is the initial velocity, a is the acceleration, and s is the displacement.

s = (v² - u²) / 2a

Given that v = 30 m/s, u = -30 m/s, and a = F/m (from F = ma) = (-0.6 N) / 0.02 kg = -30 m/s² (negative because force is in the opposite direction), we have:

s = (30² - (-30)²) / (2 × -30) = 30 m

Therefore, the work done on the particle to cause it to move to the right at 30 m/s is given by:

W = 0.6 d J = 0.6 × 30 J = 18 J

Alternatively, we can also use the kinetic energy equation to find the work done, since the kinetic energy of the particle changes from negative to positive.

K.E. = (1/2)mv²

The initial kinetic energy, K.E.i = (1/2)(0.02 kg)(-30 m/s)² = 9 J

K.E.f = (1/2)(0.02 kg)(30 m/s)² = 9 J

The change in kinetic energy, ∆K.E. = K.E.f - K.E.i = 18 J

Therefore, the work done on the particle to cause it to move to the right at 30 m/s is 18 J.

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what is the gauge pressure at the upper face of the block?

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The gauge pressure at the upper face of the block can be calculated using the formula:

Gauge Pressure = Absolute Pressure - Atmospheric Pressure

The absolute pressure is the pressure that is measured relative to a vacuum, while the atmospheric pressure is the pressure that is exerted by the weight of the atmosphere on the Earth's surface.

To find the gauge pressure at the upper face of the block, we need to subtract the atmospheric pressure from the absolute pressure at that point. This will give us the difference in pressure between the two points, which is the gauge pressure.

For example, if the absolute pressure at the upper face of the block is 200 kPa and the atmospheric pressure is 101.3 kPa, then the gauge pressure at the upper face of the block would be:

Gauge Pressure = 200 kPa - 101.3 kPa = 98.7 kPa

Therefore, the gauge pressure at the upper face of the block is 98.7 kPa.

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If A= A1i + A2j + A3k and B= B1i + B2j + B3k. Prove that A.B= A1B1+A2B2+A3B3?

Answers

Yes, that is true. A.B= A1B1+A2B2+A3B3 can be proven using the dot product rule for vectors.

According to the dot product rule, the dot product of two vectors A and B is given by A.B= |A||B|cos(θ), where θ is the angle between A and B. Since A and B are two perpendicular vectors, the angle between them is 90 degrees and therefore,

cos (90) = 0. Hence, A.B= 0. However, since A= A1i + A2j + A3k and B= B1i + B2j + B3k, we can see that A1B1 + A2B2 + A3B3 ≠ 0. Therefore, A.B= A1B1 + A2B2 + A3B3.


The dot product of two vectors A and B can be calculated by multiplying their corresponding components and then adding the results.

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You need to design a capacitor capable of storing 4.0 10-7 C of charge. At your disposal, you have a 100 V power supply and two metal plates, each of area 0.195 m2. What is the limit of the separation of the plates?

Answers

The limit of the separation of the plates can be determined by solving for the capacitance of the capacitor is 17.4 cm.

To design a capacitor capable of storing 4.0 × 10⁻⁷ C of charge using a 100V power supply and two metal plates, each of area 0.195 m², the limit of the separation of the plates is given by the formula,

C= εA/d

Where C = capacitance, ε = permittivity of free space, A = area of the plates, and d = separation between the plates. Rearranging the formula, we get,

d = εA/C

For this problem, C = 4.0 × 10-7 C/100 V = 4.0 × 10-9 F (since Q = CV)

ε = 8.85 × 10-12 F/m (permittivity of free space)

A = 0.195 m²

Substituting these values in the formula above,

d = (8.85 × 10-12 F/m × 0.195 m²)/ (4.0 × 10-9 F)

d = 0.174 m or 17.4 cm (limit of the separation of the plates)

Therefore, the limit of the separation of the plates is 17.4 cm.

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Which statement best describes the numbers of protons and electrons the penny when it is charged as indicated? Electrons were added, and the number of electrons exceeds the number of protons. How many electrons were transferred in order to create the charge " on the penny?
Ne = 1.31 * 10^10
Ne = 1.31E + 10 By what percentage do the transferred electrons change the mass of the penny? (Express your result as positive percentage for an increase negative for a decrease)
Δm/m = ___ %

Answers

The transfer of electrons to the penny caused a change in the mass of the penny. The number of electrons transferred was 1.31E + 10, which is significantly more than the number of protons in the penny.

This resulted in a positive change in the mass of the penny, increasing the mass by 0.0000000212%. Thus, this change was extremely small, as the mass of the penny was only increased by 2.12 x 10^-8 kg.

This change in mass was so small, it was nearly impossible to measure and detect. This difference in mass, however, is still a result of the transfer of electrons, and can be seen in the charged penny.

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a small object of mass 0.500 kg is attached by a 0.830 m-long cord to a pin set into the surface of a frictionless table top. the object moves in a circle on the horizontal surface with a speed of 5.03 m/s. what is the tension in the cord?

Answers

A small object of mass 0.500 kg is attached by a 0.830 m-long cord to a pin set into the surface of a frictionless tabletop. the object moves in a circle on the horizontal surface with a speed of 5.03 m/s. the tension in the cord is approximately 15.09 N.

To calculate the tension in the cord, we need to consider the centripetal force acting on the object as it moves in a circle. The centripetal force is given by the formula:
F_c = m * a_c
where F_c is the centripetal force, m is the mass of the object (0.500 kg), and a_c is the centripetal acceleration.
The centripetal acceleration can be calculated using the formula:
a_c = v^2 / r
where v is the speed of the object (5.03 m/s) and r is the radius of the circle (which is the length of the cord, 0.830 m).
First, let's calculate the centripetal acceleration:
a_c = (5.03 m/s)^2 / 0.830 m
a_c ≈ 30.1801 m/s²
Now we can calculate the centripetal force (which is equal to the tension in the cord):
F_c = 0.500 kg * 30.1801 m/s²
F_c ≈ 15.09005 N

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In Milikan's experiment, an oil drop of radius 1.64μm and density 0.851 g/cm3 is suspended in chamber C when a downward electric field of 1.92×105 N/C is applied. Find the charge on the drop, in terms of e.

Answers

The charge on the drop is equal to 2.48 x 10-17 e.

Charge(q)= (4π x 1.643 x 0.851 x 1.92x105) / (2 x 9 x 109) = 2.48 x 10-17 e.

In Millikan's experiment, the charge on an oil drop of radius 1.64μm and density 0.851 g/cm3,

suspended in chamber C when a downward electric field of 1.92×105 N/C is applied, can be found in terms of e by using the equation:

Charge (q) = (4π x radius3 x density x electric field) / (2 x 9 x 109)

Therefore,

q= (4π x 1.643 x 0.851 x 1.92x105) / (2 x 9 x 109) = 2.48 x 10-17 e.

Millikan's oil drop experiment measured the charge of an electron. ...

Electrically charged oil droplets entered the electric field and were balanced between two plates by altering the field. When the charged drops fell at a constant rate, the gravitational and electric forces on it were equal.

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a metal rod is connected to a battery through two stiff metal wires that hold the rod horizontally. the rod is between the poles of a horseshoe magnet that is sitting on a mass-measuring platform scale, which reads 100.0 g g . (figure 1) after you turned on the current in the circuit, the scale supporting the magnet read 106.0 g g . the part of the rod that is exposed to the magnetic field is 7.0 cm c m long and the current through it is 1.5 a a .

Answers

The magnitude of the magnetic field is 0.735 T.

The force acting on the metal rod is due to the magnetic field of the horseshoe magnet. We can calculate the force using the equation F = BIL, where B is the magnetic field strength, I is the current through the rod, and L is the length of the exposed part of the rod.

We know,

We are aware that F = BiL in this case, where F is the difference in force between the two measurements:

(106-100)10(-3)9.8 = 0.0588 N

B is the magnitude of the magnetic field, and i is the current that flows through the rod: 1 A.L is the length that is exposed to the field.

Now,

0.0588 = B x 1 x 0.08

=> B = 0.735 T

The magnitude of the magnetic field is 0.735 T.

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Complete Question:

A metal rod is connected to a battery through two stiff metal wires that hold the rod horizontally. The rod is between the poles of a horseshoe magnet that is sitting on a mass-measuring platform scale, which reads 100.0 g. (Figure 1)

After you turned on the current in the circuit, the scale supporting the magnet read 106.0 g. The part of the rod that is exposed to the magnetic field is 8.0 cm long and the current through it is 1.0 A.

Find the magnitude of the magnetic field.

Which of the following components of an ECG represents ventricular depolarization? a. P wave. b. QRS complex. c. T wave. d. PQ interval.

Answers

The component of an ECG that represents ventricular depolarization is the QRS complex. An ECG (electrocardiogram) is a graphic representation of the electrical activity of the heart. When the cardiac conduction system depolarizes the ventricles, the QRS complex is created.

This electrical activity is represented as a series of waveforms on an ECG. P wave, QRS complex, T wave, and PQ interval are the four waveforms that are represented in an ECG. Each waveform reflects a different aspect of the electrical activity of the heart. In an ECG, the P wave represents atrial depolarization. The QRS complex represents ventricular depolarization, which is the electrical activity that causes the ventricles to contract. The T wave represents ventricular repolarization, which is the electrical activity that occurs when the ventricles are preparing to relax. The PQ interval, also known as the PR interval, represents the time it takes for the electrical activity to travel from the atria to the ventricles. It reflects the duration of the electrical signal as it travels from the atria to the ventricles. The PQ interval is measured from the beginning of the P wave to the beginning of the QRS complex.

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A rectangular block of wood is measured with dimensions Of 11.2 cm * 3.4 cm * 4.10 cm. Calculate the volume of the block by explicitly showing the figures doubilul are considered In the calculation and report the tinal response with the number significant fiqures.

Answers

The volume of the block is 160 cm³ (rounded to 2 significant figures).

Calculate volume of a rectangular block

The volume of a rectangular block can be calculated by multiplying the length, width, and height of the block. In this case, the dimensions of the block are 11.2 cm, 3.4 cm, and 4.10 cm.

To calculate the volume, we simply multiply these three dimensions:

Volume = 11.2 cm * 3.4 cm * 4.10 cm Volume = 155.584 cm^3

However, we need to report the final answer with the correct number of significant figures. The smallest number of significant figures in the given dimensions is 2 (in 3.4 cm), so our final answer should have 2 significant figures.

Therefore, the volume of the block is 160 cm^3 (rounded to 2 significant figures).

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a circuit in a home provides power to a light fixture. the homeowners want to use a compact fluorescent bulb instead of an incandescent bulb. compact fluorescent bulbs can produce as much light as incandescent bulbs but with less energy. how is this possible?(1 point)

Answers

As they release less heat, compact fluorescent bulbs use less energy while still producing as much light as incandescent bulbs.

In addition to having a lengthier lifespan than incandescent bulbs, fluorescent bulbs are also more affordable in the long run. In comparison to incandescent bulbs, fluorescent bulbs are generally a more effective and sustainable option for illumination.

This comprises of a wire filament that glows when heated by an electric current.

Compact fluorescent bulbs can generate more light than incandescent bulbs while using less energy because an incandescent bulb emits more heat energy.

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Problem 3.2 Part A Draw the vector C⃗ =A⃗ +B⃗

Answers

To draw the vector C⃗ =A⃗ +B⃗, we need to follow these steps:

1. Draw the vector A⃗ on a coordinate plane.

2. Draw the vector B⃗ starting from the end point of vector A⃗.

3. The end point of vector B⃗ will be the end point of vector C⃗.

4. Draw a line from the starting point of vector A⃗ to the end point of vector B⃗. This will be the vector C⃗.

5. Label the vector C⃗.

Here is a visual representation of these steps:

In this example, vector A⃗ is represented by the blue line, vector B⃗ is represented by the red line, and vector C⃗ is represented by the green line.

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How much work is required to stretch an ideal spring of spring constant (force constant) 40 N/m from x =
0.20 m to x = 0.25 m if the unstretched position is at x = 0.00 m?
A) 0.050 J B) 0.80 J C) 0.45 J D) 1.3 J

Answers

The spring must be stretched by 0.045 J, or almost equal to 0.050 J, from x = 0.20 m to x = 0.25 m. (A).

How much effort is needed to stretch a perfect spring?

From the provided information for the 4 kilogram mass, we can get the spring constant. Then, using the equation x = F/k, one may calculate the displacement of a 1.5 kilogram mass. The effort needed to extend a spring x distances from its equilibrium position is W = 12kx2.

The formula: may be used to determine how much effort is needed to extend a perfect spring.

W = (1/2) k (x2² - x1²)

Where W is the work done, k is the spring constant, x2 is the final displacement of the spring, and x1 is the initial displacement of the spring.

In this case, k = 40 N/m, x1 = 0.20 m, and x2 = 0.25 m.

W = (1/2) (40 N/m) ((0.25 m)² - (0.20 m)²)

W = (1/2) (40 N/m) (0.00625 m² - 0.004 m²)

W = (1/2) (40 N/m) (0.00225 m²)

W = 0.045 J

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It takes 1100 J of work to stretch a spring from its natural length of 1 m to a length of 6 m. Find the force constant of the spring.
The spring's force constant is □N/m.

Answers

It takes 1100 J of work to stretch a spring from its natural length of 1 m to a length of 6 m. The force constant of the spring is 88 N/m.

To find the force constant of the spring, we can use the formula for the work done on a spring:

W = 0.5kx²

where W is the work done on the spring, k is the force constant of the spring, and x is the displacement of the spring from its natural length.

Given that W = 1100 J and x = 6 m - 1 m = 5 m, we can plug these values into the formula and solve for k:

1100 J = 0.5k(5 m)²

1100 J = 12.5k

k = 1100 J / 12.5

k = 88 N/m

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a 2 kg stone is tied to a 0.5 m string and swung around a circle at a constant angular velocity of 12 rad/s. the angular momentum of the stone about the center of the circle is: select all that apply a. 576 kg · m2 /s b. 12 kg · m2 /s c. 72 kg · m2 /s d. 48 kg · m2 /s e. 6 kg · m2 /s

Answers

The angular momentum of the stone about the center of the circle can be calculated using the formula L = Iω, where L is the angular momentum, I is the moment of inertia, and ω is the angular velocity.

The moment of inertia of the stone can be calculated using the formula I = mr^2, where m is the mass of the stone and r is the radius of the circle. In this case, the moment of inertia is:

I = (2 kg)(0.5 m)^2 = 0.5 kg · m^2

The angular velocity is given as 12 rad/s. Therefore, the angular momentum of the stone about the center of the circle is:

L = Iω = (0.5 kg · m^2)(12 rad/s) = 6 kg · m^2 /s

Therefore, the correct answer is e. 6 kg · m^2 /s.

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10.) Catalina and Elli were making sweet tea and added sugar into the sweet tea. They both noticed that the sugar seemed to disappear over time. Why did the sugar "disappear"?

Answers

The sugar in the sweet tea "disappeared" because it is dissolved. When sugar is put into a liquid, the sugar molecules separate and spread throughout the liquid.

The sugar molecules are attracted to the water molecules and form a solution. This is because sugar is soluble in water and when the molecules become more evenly distributed, it appears that the sugar has disappeared. This causes the sugar to become evenly distributed throughout the liquid and is no longer visible, giving the appearance that the sugar has disappeared. When sugar is added to a liquid, the molecules of the sugar break apart and spread throughout the liquid. This process is called dissolution, and it makes the sweet tea sweet.

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imagine having two parallel, flat, large surfaces; one in front of the other. each one of them is an equipotential surface. one surface is at 25 v and the other is at 33 v. the surfaces are 1.25 cm apart. what is the direction of the electric field midway between the surfaces?

Answers

a) The direction of the electric field midway between the two equipotential surfaces is perpendicular to both surfaces and parallel to the line connecting the two surfaces.

b) The magnitude of the electric field is 6400 V/m

Since the two surfaces are equipotential surfaces, the electric field must be perpendicular to both surfaces at every point. Therefore, the direction of the electric field midway between the surfaces will be perpendicular to the surfaces and parallel to the line connecting the two surfaces.

To find the magnitude of the electric field, we can use the formula for the electric field between two parallel plates

E = (V2 - V1) / d

where V2 and V1 are the potentials of the two plates, and d is the distance between them. Substituting the given values, we get

E = (33 V - 25 V) / (0.0125 m) = 6400 V/m

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The given question is incomplete, the complete question is:

imagine having two parallel, flat, large surfaces; one in front of the other. each one of them is an equipotential surface. one surface is at 25 v and the other is at 33 v. the surfaces are 1.25 cm apart. what is the direction of the electric field midway between the surfaces? what is the magnitude of electric field ?

identify the statements that accurately describe the human reaction to heat stress.

Answers

The statements that accurately describe the human reaction to heat stress are (b) Humans sweat to lower their body temperature, (d) The target temperature of the human body changes when the environment changes and (e) All human individuals have the same capacity to react to excessive heat is not a correct statement

b) Humans sweat to lower their body temperature: When the body's core temperature rises above the normal range of 36.5 to 37.5 degrees Celsius (97.7 to 99.5 degrees Fahrenheit), sweat glands in the skin release sweat, which evaporates and cools the body.

d) The target temperature of the human body changes when the environment changes: The human body has an internal set point for temperature regulation, which is typically around 37 degrees Celsius (98.6 degrees Fahrenheit). However, this set point can change depending on the temperature of the environment.

e) All human individuals have the same capacity to react to excessive heat is not a correct statement: Individual variations in age, fitness level, health status, and acclimatization to heat can affect a person's ability to tolerate heat stress. For example, elderly individuals and those with certain medical conditions may have a reduced ability to regulate their body temperature, while athletes and people who are regularly exposed to hot environments may have a greater capacity to tolerate heat stress due to acclimatization.

Therefore, the correct options are (b) Humans sweat to lower their body temperature, (d) The target temperature of the human body changes when the environment changes and (e) All human individuals have the same capacity to react to excessive heat is not a correct statement

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The given question is incomplete, the complete question is:

Identify the statements that accurately describe the human reaction to heat stress.

Describes Human Reaction to Heat Stress:

a)Humans depend on sweating to regulate their temperature more than other primates do. b) Humans sweat to lower their body temperature c) Human bodies experience vasoconstriction, the narrowing of blood vessels. d) The target temperature of the human body changes when the environment changes. e) All human individuals have the same capacity to react to excessive heat

as magma rises through continental crust, partial melting of the continental crust [ select ] the sio2 content and viscosity of the magma, eventually forming andesitic-rhyolitic magmas.

Answers

As magma rises through continental crust, partial melting of the continental crust increases the SiO2 content and viscosity of the magma, eventually forming andesitic-rhyolitic magmas.

This is because the continental crust is composed of rocks that are rich in SiO2, so when the magma partially melts these rocks, the SiO2 content of the magma increases. This also leads to an increase in the viscosity of the magma, as SiO2-rich magmas tend to be more viscous than those with lower SiO2 content.

So, the correct word to be filled in the blank is "increases".

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An object in SHM oscillates with a period of 4.0 s and an amplitude of 10 cm. How long does the object take to move from x = 0.0 cm to x = 6.0 cm?

Answers

The object in SHM takes approximately 1.23 seconds to move from x = 0.0 cm to x = 6.0 cm

An object in Simple Harmonic Motion (SHM) oscillates with a period of 4.0 s and an amplitude of 10 cm. The time taken by the object to move from x = 0.0 cm to x = 6.0 cm can be calculated using the equation of SHM:

x = A cos(ωt)

Where x is the displacement, A is the amplitude, ω is the angular frequency, and t is the time.

Given: A = 10 cm, x = 6.0 cm

We need to find t.

Rearranging the equation, we get:

cos(ωt) = x/A

cos(ωt) = 6.0/10

ωt = cos⁻¹(6.0/10)

Now, we know that the angular frequency ω is given by:

ω = 2π/T

Where T is the period of oscillation.

Substituting the value of T = 4.0 s, we get:

ω = 2π/4.0 = π/2

Substituting the value of ω in the equation for t, we get:

π/2 * t = cos⁻¹(6.0/10)

t = 2/π * cos⁻¹(6.0/10)

t ≈ 1.23 s

Therefore, the object oscillating in SHM with an amplitude of 10cm and a time period of 4.0s takes approximately 1.23 seconds to move from x = 0.0 cm to x = 6.0 cm.

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