A) What is the speed of a satellite in a geosynchronous orbit about Earth?
B) Compare it with the speed of the Earth as it orbits the Sun.

Answer:

44.7 meter per second

Explanation:

The formula to find velocity is

V = (2 · KE / m)^1/2

V = velocity

KE = Kinetic energy

m = mass

Let's calculate

(2 · 10000 / 10) ^1/2 = 44.7 meter per second

The conclusion that can be drawn from the timeline is that Americans realized their first national government was not strong enough.

Therefore, option A is the correct conclusion that can be drawn from the timeline.

To know more about timeline visit:

https://brainly.com/question/29720829

#SPJ1

The lithosphere, which is the mechanical layer's outermost layer and which exhibits stiff, brittle behaviour, The asthenosphere is a solid portion of the upper mantle that is so heated that it can flow and act plastically. The asthenosphere supports the lithosphere.

The crust and the brittle upper mantle make up the lithosphere, the Earth's outermost layer. The Greek terms "lithos," which means stone, and "sphaira," which means globe or ball, are the source of the English word "lithosphere."The crust and uppermost mantle are both parts of the lithosphere, which is the planet's hard, rigid outer layer. The weaker, hotter, and deeper portion of the upper mantle, known as the asthenosphere, lies beneath the lithosphere. A variation in how each lithosphere and asthenosphere responds to stress defines their boundary. The asthenosphere deforms viscously and accommodates strain by plastic deformation, whereas the lithosphere remains hard for very long geologic time periods during which it deforms elastically and through brittle failure.

Thus, it is believed that the lithosphere's thickness corresponds to the distance from the isotherm that marks the change from brittle to viscous behaviour.

To know more about lithosphere visit:

https://brainly.com/question/14631600

#SPJ1

A nearsighted person has a near point of 12 cm and a far point of 40 cm With the corrective lens in place, the person's new near point will be 0.23 m or 23 cm.

1) Power of corrective lens for clear distant vision:

Near point = 12 cm

Far point = 40 cm

Lens Power = (1 ÷ 0.40) - (1 ÷ 0.12)

Lens Power = 2.5 - 8.33

Lens Power = -5.83 D

2) New near point with the corrective lens in place:

Lens Power = -5.83 Diopters

Far point = 40 cm

New near point = 1 ÷ (-5.83) + 0.40

New near point = -0.171 + 0.40

New near point = 0.23 m

So, with the corrective lens in place, the person's new near point will be 0.23 m or 23 cm.

To know more about the corrective lens:

https://brainly.com/question/32985197

#SPJ12

Bulb C goes out, Bulb A shines brighter (due to higher current), and Bulb B goes out (because to insufficient current) ( due to no current )

The term "electric current" is frequently used to describe how much electricity flows through a circuit and how it flows in an electronic circuit. Amperes are used to measure it (A). As more electricity passes across the circuit, the ampere value increases.

Starting a car, turning on a light, using an electric stove, watching TV, shaving with an electric razor, playing video games, using a phone, and charging a mobile phone are examples of current electricity.

To know more about current visit:

https://brainly.com/question/23323183

#SPJ4

The type of orbital fracture described in the question is commonly referred to as a "blowout fracture."

This occurs when the eye experiences a blunt force trauma, such as being hit with a ball or fist. The force of the impact causes the contents of the eye socket (orbit) to be displaced posteriorly, potentially causing damage to the muscles and nerves that control eye movement. This can also create a sudden increase in pressure within the orbit that can lead to a fracture of the orbital floor, which is the bony structure at the bottom of the eye socket. The term "blowout" refers to the fact that the force of the impact causes the orbit to "blow out" at its weakest point, typically the orbital floor. The type of orbital fracture described in the question is commonly referred to as a "blowout fracture."  

Learn more about force :

https://brainly.com/question/13191643

#SPJ4

The magnitude of the force on each charge is approximately 3.16 × 10^-15 N.

The magnitude of the force is a measure of the strength of the force between two charged objects. In this case, we have four charged objects arranged in a square, and we want to find the magnitude of the force acting on each of these objects. The magnitude of the force is given by Coulomb's law, which depends on the charges of the objects and the distance between them. In this problem, we assume that the charges are point charges and the square is a plane, and use Coulomb's law to calculate the magnitude of the force between two opposite charges. The magnitude of the force on each charge is then determined by adding up the forces due to the other three charges. The result is a numerical value that tells how strong the force is on each charge, but it does not tell us the direction of the force.

Assuming that the charges are point charges and the square is a plane, the magnitude of the force between two point charges can be calculated using Coulomb's law:

F = (k * q1 * q2) / r^2

where F is the force between the charges, k is Coulomb's constant

(9 × 10^9 N·m^2/C^2), q1 and q2 are the charges, and r is the distance between the charges.

In this case, each corner of the square has a charge of 4.2c, where c is the elementary charge (1.602 × 10^-19 C). So, the charges are:

q1 = q2 = q3 = q4 = 4.2c = 4.2 * 1.602 × 10^-19 C

= 6.7244 × 10^-19 C

The force on one of the charges is the vector sum of the forces due to the other three charges. Since the square is symmetric, the direction of the force will be along the diagonals of the square. The distance between two opposite corners of the square is:

r = √2 * 0.100 m

= 0.1414 m

Using Coulomb's law, the magnitude of the force between two charges is:

F = (k * q1 * q2) / r^2 = (9 × 10^9 N·m^2/C^2) * (6.7244 × 10^-19 C)^2 / (0.1414 m)^2

≈ 1.58 × 10^-15 N

Therefore, the magnitude of the force on each charge is:

F total = 2 * F = 2 * 1.58 × 10^-15 N

≈ 3.16 × 10^-15 N

Note that the direction of the force on each charge is along the diagonal of the square, so it has both x and y components. The x and y components of the force cancel out for two opposite charges, but they add up for adjacent charges.

To know more about magnitude, visit:

https://brainly.com/question/30337382

#SPJ4

The term “angular resolution,” which is often referred to as “spatial resolution,” refers to a device's capacity to differentiate fine features of an item. Examples include the human eye and telescopes. The eye, an organ, functions as a tool in the human visual system.

When the measurement points are closer together, smaller objects can be “seen” with less angular resolution. The safety quality increases with additional beams, which results in a decrease in angular resolution.

Several safety laser scanner products direct the laser beam in a circular pattern across the scanning field using a spinning mirror.

The lowest angle between close objects that can be seen to be distinctly separate is the telescope's angular resolving power (or resolution). The fact that light is a wave limits resolution.

Therefore, One spot of light with a hazy representation of two stars.

Learn more about angular resolution here:

https://brainly.com/question/25014179

#SPJ4

The angular acceleration of the potter's wheel that moves uniformly is [tex]0.0352 radians/s^2[/tex]

Angular acceleration is a measure of how quickly an object's angular velocity changes with respect to time. In this case, the potter's wheel undergoes a uniform acceleration, which means that its angular acceleration remains constant over time.

We can use the following equation to find the angular acceleration of the potter's wheel:

angular acceleration = (final angular speed - initial angular speed) / time

Here, the initial angular speed is zero because the wheel starts from rest. The final angular speed is 0.19 rev/s. The time taken to reach this speed is 34.0 s. We can convert the final angular speed to radians per second using the conversion factor 1 rev/s = 2π radians/s:

final angular speed = 0.19 rev/s * 2π radians/rev = 1.196 radians/s

Put values:

angular acceleration = (1.196 radians/s - 0 radians/s) / 34.0 s = [tex]0.0352 radians/s^2[/tex]

Therefore, the angular acceleration of the potter's wheel is [tex]0.0352 radians/s^2[/tex]

Learn more about angular acceleration here:

https://brainly.com/question/29428475

#SPJ4

Hydrogen (H2) has the highest average kinetic energy per mole at 298 K. So, the correct option is (c) hydrogen.

The average energy of gas particles as a result of their mobility is measured by the gas's average kinetic energy. It is closely related to the gas's temperature, which is a gauge of the system's average particle kinetic energy. The following equation provides a gas's typical kinetic energy:

KEavg = kT (3/2)

where T is the absolute temperature of the gas in Kelvin, k is Boltzmann's constant, and KEavg is the average kinetic energy of a gas.

According to question:

Since a gas's average kinetic energy is directly correlated with its temperature, the gas with the lowest molar mass will have the highest average kinetic energy per mole at any given temperature.

Our calculations based on the molar masses of the given gases at standard conditions (298 K, 1 atm) show that hydrogen (H2) has the lowest molar mass at 2.016 g/mol, followed by carbon dioxide (CO2), water (H2O), and oxygen (O2), which have molar masses of 44.01 g/mol, 18.02 g/mol, and 32.00 g/mol, respectively.

In light of this, at 298 K, hydrogen (H2) has the highest average kinetic energy per mole. Hydrogen is the proper response, which is (c).

To know more about average kinetic energy visit:

https://brainly.com/question/28702344

#SPJ4

The correct option is C. The bat exerts the same amount of force on the ball as the ball exerts on the bat.

In physics, pressure is an influence that may exchange the motion of an item. A force can purpose an object with mass to alternate its velocity (e.g. moving from a nation of relaxation), i.e., to boost up.  its miles are measured inside the SI unit of newton (N). force is represented with the aid of the symbol F (formerly P).

The unique form of Newton's 2d regulation states that the net pressure appearing upon an object is identical to the fee at which its momentum modifications with time. If the mass of the item is steady, this regulation implies that the acceleration of an item is immediately proportional to the internet force appearing on the object, is within the direction of the internet force, and is inversely proportional to the mass of the object.

To learn more about Force visit here:

brainly.com/question/13191643

#SPJ4

If the height of the building is 449 m and ignoring air resistance then, 93.8m/s is the speed with which the penny strikes the ground.

What is air resistance?

A type of friction (a force that resists motion) that happens between air and another object is air resistance, commonly referred to as drag. When a thing travels through the air, it experiences force. The two constant natural forces that affect every item on Earth are air resistance and gravity.

For instance, air particles pressing on an aircraft as it soars through the air make it more difficult for the aircraft to move. A feather's ability to fall is significantly influenced by air resistance.

Steps for calculation:

[tex]v^2=u^2+2gS \\where u=0, 2g=9.8m/s^2 and S=449m[/tex]

[tex]We get,\\ v^2 =2*9.8*449m^2 /s^2\\ v=93.8m/s[/tex]

To learn more about air resistance visit;

https://brainly.com/question/8141158

#SPJ4

If air resistance is present, it would cause the graph in part a to curve down, making it less steep. This is because air resistance would oppose the motion of the object and cause it to slow down over time, resulting in a slower rate of change in the displacement over time.

Air resistance, also known as drag, is a force that opposes the motion of an object as it moves through the atmosphere. It arises from the collision of air molecules with the object's surface, which generates friction and a pressure differential. Air resistance increases with the object's speed, surface area, and shape, and can have a significant effect on the object's motion, especially at high speeds. For example, air resistance can cause a projectile to lose speed and altitude over time, or make it difficult for a vehicle to achieve high speeds. Understanding and accounting for air resistance is important in many fields, such as aerodynamics, physics, and engineering.

To know more about Motion visit:

https://brainly.com/question/22810476

#SPJ4

If a sphere is hanging freely from a cord, it is in stable equilibrium.

In stable equilibrium, a small displacement of the sphere from its equilibrium position results in a restoring force that brings the sphere back to its original position. In this case, if the sphere is displaced slightly from its hanging position, the force of gravity will act to return it to its original position.

Neutral equilibrium occurs when a small displacement of the object from its equilibrium position does not result in any net restoring force.

Unstable equilibrium occurs when a small displacement of the object from its equilibrium position results in a net force that moves the object further away from its original position.

Negative equilibrium is not a commonly used term in physics.

For more such questions on equilibrium

https://brainly.com/question/517289

#SPJ4

The natural frequency (in hertz) of oscillations of the second floor

(a) To find the natural frequency of oscillation of the second floor, we can use the formula:

ω_n = √(k/m)

where ω_n is the natural frequency, k is the spring constant, and m is the mass of the second floor.

The spring constant k can be found by using the given information that a horizontal force of 5 tons (10,000 lbs) is required to displace the second floor by 1 ft. This means that the spring constant is:

k = F/x = (10,000 lbs) / (1 ft) = 10,000 lb/ft

Converting the mass of the second floor to slugs, we get:

m = 32,000 lbs / g = 32,000 / 32.2 = 994.4 slugs

Substituting the values of k and m, we get:

ω_n = √(k/m) = √(10,000 lb/ft / 994.4 slugs) ≈ 10.05 rad/s

Converting to Hertz, we get:

f_n = ω_n / 2π ≈ 1.6 Hz

Therefore, the natural frequency of oscillation on the second floor is approximately 1.6 Hz.

(b) The amplitude of the forced oscillations of the second floor can be found using the formula:

x = (F_0 / m) / √(ω² - ω_n²)

where x is the amplitude of the forced oscillations, F_0 is the amplitude of the external force, ω is the circular frequency of the ground oscillations, and ω_n is the natural frequency of the second floor.

Substituting the given values, we get:

x = (F_0 / m) / √(ω² - ω_n²)

= (10,000 lbs / 994.4 slugs) / √((2π/2.25 s)² - (10.05 rad/s)²)

≈ 0.11 ft

Converting to inches, we get:

x ≈ 1.3 in

Therefore, the amplitude of the forced oscillations of the second floor is approximately 1.3 inches.

To Learn More About oscillations click

https://brainly.com/question/30111348

#SPJ4

The electric field strength is positive, which means that the direction of the electric field is radially outward from the charge.

The electric field strength at a distance r from a point charge q is given by:

[tex]E = k*q/r^2[/tex]

where k is Coulomb's constant, which has a value of approximately[tex]9.0 x 10^9 N m^2/C^2.[/tex]

In this case, we have a point charge [tex]q = 1 nC = 1 x 10^-9 C[/tex]  located at a distance r = 2.5 m.

Substituting these values into the equation above, we get:

[tex]E = (9.0 x 10^9 N m^2/C^2) * (1 x 10^-9 C) / (2.5 m)^2[/tex]

[tex]E = 1.44 x 10^-6 N/C[/tex]

The electric field strength is positive, which means that the direction of the electric field is radially outward from the charge.

Learn more about electric field, here:

https://brainly.com/question/8971780

#SPJ1

Answer:

Yes, that's a good way to think about it. The entire universe can be described as a vast collection of matter and energy that interact with one another in complex ways. Energy is transferred from one object to another through various processes, such as radiation, conduction, and convection. These interactions result in the movement and transformation of matter and energy, which in turn shape the physical and chemical characteristics of the universe as a whole. So, in a sense, the entire universe can be seen as a dynamic system of energy transfer.

Explanation:

The correct option is D. 3690s They can hare afford to nap if he does not want to lose the race.

D= 1000m

[tex]V_T[/tex]= 0.27 m/s

[tex]T_t=\frac{1000}{0.27} = 3703.7sec[/tex]

[tex]T_h = \frac{100}{15}[/tex][tex]= 6.7sec[/tex]

[tex]T_t = 7+ t_n +t_h[/tex]

[tex]3703.7 = 7+t_n +6.7\\t_n = 3703.7- 13.7\\t_n = 3690sec[/tex]

The pace is measured as the ratio of distance to the time wherein the distance is turned into a blanket. the pace is a scalar quantity because it has the most effective course and no importance. For the size of the pace in vehicles, speedometers are used. pace also can be calculated with the assistance of a graph. the space-time graph allows know-how of the rate of an object.

In regular use and in kinematics, the rate of an object is the value of the change of its position over the years or the importance of the alternate of its function per unit of time; its miles as a result a scalar amount. the spot pace is the limit of the common pace because the period of the time c program language period approaches 0. pace isn't always similar to velocity.

To learn more about Speed visit here:

brainly.com/question/28224010

#SPJ4

The statement that explains how ocean-currents affect global climates is: "Water absorbs a lot of thermal energy and releases it over time and distance."

The ocean-currents can be say as the continuous movement of sea water bodies in the ocean. Ocean currents are like large rivers of water flowing through the oceans.

The movement of ocean-currents has a major impact on global climate because water is a good conductor and storage of heat.

When we check the factors which affects the ocean currents to happen we have to talk about Coriolis-Effect. Coriolis Effect refers to an internal force (Coriolis) that causes the deflection of an object in motion.

Wind, water density and topography are the other major factors which directly influence the ocean currents.

Strong winds can move the water surface causing the ocean currents. About water density, more dense water will sink and that sinking water pushes the water below it up. About topography, ridge in the ocean bottom moves the water upward, while valley in the ocean moves it downward.

When ocean currents flow, they absorb large amounts of thermal energy. This energy is then transported over time and distance, affecting the temperature and climate of the regions through which the currents flow.

Learn more about ocean-currents:

https://brainly.com/question/20823678

#SPJ4

The waves created by the boat have a speed of 25.3 km/h, a period of approximately 0.37 hours, and a frequency of approximately 0.027 h⁻¹

When a boat travels at a certain speed across the surface of a still lake, it creates a series of waves that spread outwards from the boat. The speed of these waves depends on the properties of the water, such as its depth and temperature.

In this case, the boat is traveling at a speed of 43.0 km/h across the surface of a still lake, and the waves it creates in the water have a speed of 25.3 km/h.

The speed of the waves created by the boat can be calculated using the formula:

v = sqrt(gλ/2π)

where v is the speed of the waves, g is the acceleration due to gravity (9.81 m/s^2), λ is the wavelength of the waves, and π is the mathematical constant pi (approximately equal to 3.14).

Assuming that the wavelength of the waves is proportional to the speed of the boat, we can use the following formula to relate the wavelength of the waves (λ) to the speed of the boat (vb) and the speed of the waves (v):

λ = (v + vb) T

where T is the period of the waves, which is the time it takes for one complete wavelength to pass a fixed point.

We can rearrange this formula to solve for the period:

T = λ / (v + vb)

Substituting the given values, we get:

T = λ / (v + vb) = (25.3 km/h) / (43.0 km/h + 25.3 km/h)

T ≈ 0.37 hours

Finally, we can use the period of the waves to calculate their frequency (f), which is the number of waves that pass a fixed point in one second:

f = 1 / T

f = 1 / 0.37 hours ≈ 0.027 h⁻¹

Therefore, the waves created by the boat have a speed of 25.3 km/h, a period of approximately 0.37 hours, and a frequency of approximately 0.027 h⁻¹.

Learn more about speed here :

brainly.com/question/28609029

#SPJ4

The heat transfer in this situation would be transient, as the temperature of the room, the can, and the drink inside the can are all changing over time.

The heat transfer can be modeled as a two-dimensional problem, since the can is cylindrical in shape and the temperature of the can and the drink inside the can will only depend on the vertical and horizontal components of heat transfer. The coordinate system used to analyze the heat transfer problem would be cylindrical, since it is the most appropriate for modeling a cylindrical object. In this system, the radial direction is along the circular circumference of the can, and the axial direction is along the length of the can. The temperature of the can and the drink inside the can can then be calculated using the two-dimensional equations of heat transfer, which consider both the radial and axial components of heat transfer.

To learn more about heat click here https://brainly.com/question/30603212

#SPJ4

Pluto's orbit is much more eccentric and inclined compared to the orbits of the eight major planets in the solar system. This means that Pluto's orbit is more elliptical and tilted relative to the plane of the solar system, while the orbits of the major planets are generally more circular and on the same plane.


First, Pluto's orbit is much more eccentric (elongated) than the orbits of the other planets. This means that its distance from the Sun varies more dramatically over the course of its orbit. While the other planets have nearly circular orbits, Pluto's orbit is more oval-shaped.

Second, Pluto's orbit is also more inclined (tilted) relative to the plane of the Solar System. The eight major planets all orbit in roughly the same plane, but Pluto's orbit is tilted at an angle of about 17 degrees. This means that it sometimes travels above and below the plane of the Solar System during its orbit.

Learn more about Pluto at https://brainly.com/question/13037755

#SPJ11

(a) magnitude of the final velocity is 11.94 m/s, and the (b) angle of the final velocity with respect to the positive x-axis is 37.1°.

We can tackle this issue utilizing kinematic conditions. Since the speed increase is consistent, we can utilize the accompanying conditions:

v = u + at

s = ut + 1/2 [tex]at^2[/tex]

[tex]v^2 = u^2[/tex] + 2as

where u is the underlying speed, v is the last speed, t is the time, s is the dislodging, and an is the speed increase.

Given: u = 4.00 m/s I, a = 5.00[tex]m/s^2[/tex] I + 7.00 [tex]m/s^2[/tex] j, s = 12.0 m lined up with the x-pivot.

Utilizing the second kinematic condition, we can address for the time taken to venture to every part of the distance:

s = ut + 1/2 [tex]at^2[/tex]

12.0 = 4.00t + 1/2 (5.00)[tex]t^2[/tex]

5.00[tex]t^2[/tex] + 4.00t - 12.0 = 0

Settling for t utilizing the quadratic recipe, we get:

t = 1.09 s (taking the positive root)

Utilizing the first kinematic condition, we can tackle for the last speed in the x-course:

v_x = u_x + a_x t

v_x = 4.00 + 5.00(1.09)

v_x = 9.45 m/s

Utilizing the Pythagorean hypothesis, we can track down the greatness of the last speed:

|v| = sqrt([tex]v_x^2 + v_y^2[/tex])

|v| = sqrt(([tex]9.45)^2[/tex] + ([tex]7.00)^2[/tex])

|v| = 11.94 m/s

Utilizing the reverse digression capability, we can track down the point of the last speed regarding the positive x-hub:

θ = [tex]tan^(- 1)[/tex](v_y/v_x)

θ = [tex]tan^(- 1)[/tex](7.00/9.45)

θ = 37.1°

Thusly, the (a) magnitude of the last speed is 11.94 m/s, and the (b) angle of its velocity as for the positive x-pivot is 37.1°.

To learn more about magnitude and angle of velocity, refer:

https://brainly.com/question/24180566

#SPJ4

The complete question is:

A moderate wind accelerates a pebble over a horizontal xy plane with a constant acceleration  

a=(5.00m/s 2) i^+(7.00m/s 2) j^ .

At time t=0, the velocity is (4.00m/s) i ^.What are the (a) magnitude and (b) angle of its velocity when it has been displaced by 12.0m parallel to the x axis?

Potential energy is a form of stored energy that is dependent on the relationship between different system components.

The bungee cord has 14400 joules of elastic potential energy.

The elastic potential energy of a spring (or in this case, a bungee cord) is given by the formula:

Elastic potential energy = [tex]1/2 * k * x^2[/tex]

Where:

k = spring constant

x = displacement from the equilibrium position

In this case, we know that the spring constant (k) is 800 and the maximum displacement (x) is 6 meters. Plugging these values into the formula, we get:

Elastic potential energy = [tex]1/2 * 800 * 6^2[/tex]

Elastic potential energy = [tex]1/2 * 800 * 36[/tex]

Elastic potential energy = 14400 joules

for such more question on potential energy

brainly.com/question/1242059

#SPJ4

A super-happy fun ball is thrown from a height of six feet, and it returns to the point where it was dropped. It only bounces once before rebounding less than a distance of one foot.

To solve this problem, we can use a geometric series to represent the distance traveled by the ball after each bounce.

Let's denote the height of the ball after the nth bounce as [tex]h_n[/tex]. Then we have:

[tex]h_1 = 6[/tex] (the initial height of the ball)

[tex]h_2 = 6 + 6 = 12[/tex] (the height after the first bounce)

[tex]h_3 = 6 + 6 + 6 = 18[/tex] (the height after the second bounce)

[tex]h_4 = 6 + 6 + 6 + 6 = 24[/tex] (the height after the third bounce)

and so on.

The height after the [tex]n^t^h[/tex] bounce:-

[tex]h_n = 6 * 2^(^n^-^1^)[/tex]

Now, we want to find the number of bounces that the ball will make before its rebound height is less than 1 foot. In other words, we want to find the smallest value of n such that[tex]h_n/2 < 1.[/tex] This is equivalent to:

= [tex]6 * 2^(^n^-^1^) / 2 < 1[/tex]

= [tex]3 * 2^(^n^-^1^) < 1[/tex]

= [tex]2^(^n^-^1^) < 1/3[/tex]

= [tex]n-1 < log2(1/3)[/tex]

= [tex]n < log2(1/3) + 1[/tex]

= [tex]log2(1/3) = -1.585, so n < -1.585 + 1 = -0.585[/tex].

Since n must be a positive integer, the smallest value of n that satisfies the condition is n = 1.

Therefore, the ball will bounce once before its rebound height is less than 1 foot.

To know more about distance please refer: https://brainly.com/question/9722272

#SPJ4

The resistance of the wire will increase by a factor of 8.

When the length of a wire is doubled, its resistance also doubles because resistance is directly proportional to the length. On the other hand, when the diameter of the wire is halved, the cross-sectional area of the wire reduces by a factor of 4 (πr^2 -> π(r/2)^2). As a result, the resistance decreases by a factor of 1/4.

So, when both changes are made, the resistance of the wire increases by a factor of 8 (2 x 4). This is because the effect of doubling the length is greater than the effect of halving the diameter. Thus, the net effect is an increase in resistance. This relationship between resistance, length, and cross-sectional area is described by the formula for resistance, which is R = ρL/A, where R is the resistance, ρ is the resistivity of the material, L is the length of the wire, and A is its cross-sectional area.

Learn more about resistance here:

https://brainly.com/question/29427458

#SPJ4

A temperature difference (T) is the result of subtracting two independent isolated temperature measurements or measuring the amount of temperature rise or decline.

The two layers are the same thickness, but the materials are not. A's thermal conductivity is double that of B's. The temperature difference between the two ends of the wall in thermal equilibrium is 36o C. Determine the beginning and end temperatures, as well as the sample mass and energy provided. Subtract the end and starting temperatures to get the temperature change (T). Multiply the temperature difference by the mass of the sample. Distribute the heat/energy supplied by the product.

To calculate the temperature difference, just subtract the smaller figure from the bigger one, in this example 19 degrees Celsius from 25 degrees Celsius. This results in a six-degree Celsius temperature differential.

Learn more about heat/energy  from here;

https://brainly.com/question/25384702

#SPJ4

The two kinds of balance that keep the Sun shining are thermal equilibrium and hydrostatic equilibrium.

Thermal Equilibrium: The Sun shines by nuclear fusion, a process in which hydrogen atoms combine to form helium and release energy in the form of light and heat.

Hydrostatic Equilibrium: The Sun is also in hydrostatic equilibrium, which is the balance between the inward gravitational force and the outward pressure force.

These two balances are delicately intertwined and any disturbance to them could result in a catastrophic event such as a supernova or a collapse.

To know more about the sun, here

brainly.com/question/1116384

#SPJ4

Lens of digital camera must be moved approximately 99.4 meters farther away from the flower to focus on the tree.

To change the focus of the camera from a flower 1.5 m away to a tree 100 m away, we need to move the lens to adjust the distance between the lens and the image sensor. This adjustment changes the focal length of the lens and allows the camera to focus on objects at different distances.

The focal length of the lens, f, is related to the distance between the lens and the image sensor, d, by the thin lens equation:

[tex]1/f = 1/d_o + 1/d_i[/tex]

where [tex]d_o[/tex] :object distance (lens to object distance), and [tex]d_i[/tex] : image distance (lens to image sensor distance).

For the original focus on the flower, we have:

f = 5.7 mm,

[tex]d_o[/tex]= 1.5 m, [tex]d_i[/tex] = ?

Using the thin lens equation, we can solve for d_i:

[tex]1/5.7 mm = 1/1.5 m + 1/d_i[/tex]

[tex]d_i[/tex] = 5.9 mm

The image sensor is 5.9 mm away from the lens when the camera is focused on the flower.

For the new focus on the tree, we have:

f = 5.7 mm

[tex]d_o[/tex] = 100 m, [tex]d_i[/tex] = ?

Using the thin lens equation again, we can solve for d_i:

[tex]1/5.7 mm = 1/100 m + 1/d_i[/tex]

[tex]d_i[/tex]= 5.77 mm

To change the focus of the camera from the flower to the tree, we need to move the lens by a distance Δd such that the new image distance is 5.77 mm. We can use the thin lens formula to find the new object distance:

[tex]1/5.7 mm = 1/d_o + 1/5.77 mm[/tex]

[tex]d_o[/tex] = 100.9 m

Learn more about lens here:

https://brainly.com/question/13885819

#SPJ4