Sound waves are emitted from the surface of the ocean and travel through the water at 1490 m/s, with a wavelength of 15m. The frequency of the sound waves as they travel to the bottom of the ocean is 99.33Hz.
What are sound waves?The pattern of disruption brought on by energy moving away from the sound source is known as a sound wave. Longitudinal waves are those produced by sound. This indicates that the direction of energy wave propagation and the particle vibrational propagation are parallel. The atoms oscillate when they are put into vibration. A high-pressure and a low-pressure zone are created in the medium as a result of this constant back and forth action. Compressions and rarefactions, respectively, are terms used to describe these high- and low-pressure zones. The sound waves go from one medium to another as a result of these regions being transmitted to the surrounding media.
Using the formula:
v = n×λ
where,
v is the velocity of sound wave and,
λ is the wavelength.
Substituting the values and solving for frequency:
n = 99.33Hz
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Thirteen resistors are connected across points A and B as shown in the figure. If all the resistors are
accurate to 2 significant figures, what is the equivalent resistance between points A and B?
The equivalent resistance between points A and B in the diagram is 22 Ω
How do I determine the equivalent resistance?We shall begin by obtaining the equivalent resistance in parallel (i,e the three 6 Ω resistor). Details below:
Resistor 1 (R₁) = 6 ΩResistor 2 (R₂) = 6 ΩResistor 3 (R₃) = 6 ΩEquivalent resistance (Rₜ) = ?1/Rₜ = 1/R₁ + 1/R₂ + 1/R₃
1/Rₜ = 1/6 + 1/6 + 1/6
1/Rₜ = 3/6
1/Rₜ = 1/2
Rₜ = 2 Ω
Finally, we shall determine the equivalent resistance between A and B (i.e series arrangement). Details below:
Resistor 1 (R₁) = Resistor 2 (R₂) = ... = Resistor (R₁₁) = 2 ΩEquivalent resistance (R) =?R = R₁ + R₂ + R₃ + R₄ + R₅ + R₆ + R₇ + R₈ + R₉ + R₁₀ + R₁₁
R = 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2
R = 22Ω
Thus, we can conclude that the equivalent resistance is 22 Ω
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Which of the following provided the best definition as to what is gravity? Group of answer choices What goes up must come down Everything with mass is attracted to everything else with mass Only small things are attracted to larger things Only larger things are attracted to smaller things
The statement that everything with mass is attracted to everything else with mass is the best definition of gravity.
What is gravity?In the field of physics, gravity is a basic interaction that causes all objects with mass or energy to attract one another. This force is present everywhere in the universe, and is the reason why all the planets in the solar system orbit around the sun.
From the group of answer choices, "Everything with mass is attracted to everything else with mass" is correct, since it describes the natural phenomenon by which all objects in the universe are attracted to one another.
The statement "What goes up must come down" is a simple observation of gravity's effects on objects on Earth, but it does not provide a complete definition of the force itself.
"Only small things are attracted to larger things" and "Only larger things are attracted to smaller things" are incorrect, as gravity acts on all objects with mass, regardless of their size.
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1. A ball is thrown horizontally at a height of 4.91 m above the ground. It has an initial speed of 16.0 m/s. How long will it take to drop to the ground? How far, measured horizontally from the launch point, will it strike the ground?
It will take the ball 1 s to drop to the ground
The distance from the launch point where the ball will strike the ground would be 16.0 m.
Projectile motionWe can use the kinematic equations of motion to solve this problem. The vertical motion of the ball can be described using the equation:
h = vit + 1/2g*t^2
where h is the initial height, vi is the initial vertical velocity (which is zero), g is the acceleration due to gravity (9.8 m/s^2), and t is the time taken to fall to the ground. Solving for t, we get:
t = sqrt(2h/g) = sqrt(2*4.91 m/9.8 m/s^2) = 1 s
The horizontal motion of the ball is uniform, since there is no horizontal acceleration. We can use the equation:
d = v*t
where d is the distance traveled, v is the initial horizontal velocity (which is 16.0 m/s), and t is the time taken to hit the ground (which is 1 s). Solving for d, we get:
d = v*t = 16.0 m/s * 1 s = 16.0 m
So the ball will strike the ground 16.0 meters away from the launch point, measured horizontally.
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help as soon u can pls! due in 45 mins!!
Which statement correctly represents a mineral?
1. any naturally forming substance made from one element
2. any chemical substance which forms naturally in the Earth
3. an element which is made into an object
4. any substance which develops in the ground
Minerals are any chemical substance which forms naturally in the Earth
Define mineral.
Minerals are those substances found in foods and in the earth that our systems require for healthy growth and development. Calcium, phosphate, potassium, sodium, chloride, magnesium, iron, zinc, iodine, chromium, copper, fluoride, molybdenum, manganese, and selenium are among the nutrients that are crucial for good health.
Compounds found only in living creatures are typically not considered minerals according to geological definitions. However, some minerals, like calcite, are frequently biogenic or, in terms of chemistry, are organic molecules (such as mellite). Additionally, living things frequently produce inorganic crystals (like hydroxylapatite), which are also found in rocks.
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Calculate the velocity of a 9.3 kg object that has 5.4 kgm/8
Answer:
To calculate the escape velocity: Find the object's mass in kilograms, m, and its radius in meters, r. Multiply m by the gravitational constant (6.674 × 10 −11) and then by 2. Divide the result of step 2 by r. Raise the result of step 3 by 0.5. The result is the escape velocity
Explanation:
A closed circuit containing THREE of the same type of resistors has a current of 2 amps and TWO 9V batteries. How much resistance does EACH resistor have, in ohms?
The amount of resistance that each resistor has, in this closed circuit, given the batteries is 3 ohms.
How to find the resistance ?In a closed circuit, the total resistance (R_total) is equal to the sum of the individual resistances. We can use Ohm's law to solve for the resistance of each resistor:
Resistance (R) = Voltage (V) / Current (I)
Using Ohm's law, we can solve for the total resistance (R_total) of the circuit:
= V_total / I
= 18V / 2A
= 9 ohms
Since there are three identical resistors in the circuit, we can divide the total resistance by 3 to find the resistance of each resistor:
= 9 / 3
= 3 ohms
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Which requires more work, lifting a 90 kg bag up 6 m in 4 minutes, or lifting a 45 kg bag up 12 m in 2 minutes?
Answer:
W = m g h increase in PE due to lfting bag
W1 = 90 kg * 9.8 m/s^2 * 6 m
W2 = 45 kg * 9.8 m/s^2 * 12 m
W2 / W1 = 1 the work is the same in both cases
The power required is different
P = W / t
Since t is smaller for W2 and the work output is the same the power required to produce W2 is twice as great
A constant force is applied to an object, causing the object to accelerate at 6. 00 m/s2. What will the acceleration be if
The rate of acceleration if force is doubled is same, if the objects mass is doubled it is halved, if both the object mass and force are doubled the acceleration will be same , d- acceleration will be quadrupled
Newton's second law of motion states that force is equal to mass multiplied by acceleration: F = m * a, where F is the applied force, m is the object's mass, and an is the acceleration produced.
a- When the force is doubled, the acceleration doubles as well. Using the formula, we get:
F' = 2F
a' = F' / m = (2F) / m = 2F / (2m) = F / m = a
B- If the mass is doubled, the acceleration will be halved. Using the equation, we get:
m' = 2m
a' = F / m' = F / (2m) = a / 2
C- If both the force and the mass are doubled, the acceleration will remain the same. Using the equation, we get:
F' = 2F
m' = 2m
a' = F' / m' = (2F) / (2m) = F / m = a
D- If the force is doubled and the mass is halved, the acceleration will be quadrupled. Using the equation, we get:
F' = 2F
m' = m / 2
a' = F' / m' = (2F) / (m/2) = 4F / m = 4a
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The complete question is:
When a constant force is applied to an object, it accelerates at 6.0 m/s2. What will be the rate of acceleration if
the force doubled?
the object's mass doubled?
Both the force and the mass of the object are doubled?
The force is doubled, but the object's mass is cut in half?
What would be its orbital velocity if Ingenuity is on the surface of Mars?
For the answer, type in your answer (in standard notation, not scientific
notation). Do not write units.
Include two numbers after the decimal (the hundredths place).
The orbital velocity, if Ingenuity is on the surface of Mars is 3549.67 m/s
What is Orbital Velocity ?Orbital velocity is also called as critical velocity. It is minimum velocity must be given to the satellite or the body, so that it can revolve around the planet. i.e. orbital velocity is minimum velocity of body to revolve in stable orbit around a planet.
Orbital velocity is given by,
[tex]v_{c} =\sqrt{\frac{GM}{R+h}}[/tex] where G = Gravitational constant (6.673×10⁻¹¹ Nm²/kg²)
M = Mass of the planet
R = Radius of the planet
h = height of the object(satellite)
Orbital velocity depends on mass of the planet, radius of the planet and height of the object(satellite). It is independent of mass of the body(satellite).
Given,
M = 6.42×10²³ kg
R= 3.4×10⁶ m
h= 0 m (our body is on surface of the mars so)
Putting these values in the equation.
[tex]v_{c} =\sqrt{\frac{GM}{R}}[/tex] = [tex]\sqrt{\frac{(6.673*10^{-11}) (6.42*10^{23}) }{3.4*10^{6}}}[/tex]
[tex]V_{c}[/tex]= 3549.67 m/s
Hence Orbital velocity of Ingenuity on the surface of Mars 3549.67 m/s
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As force increases acceleration _______________________________________________. As force decreases acceleration ________________________________________________.
The words that fill the blanks are;
increases
decreases
What is the relationship between force and acceleration?Force and acceleration are directly proportional to each other, according to Newton's second law of motion. The law states that the acceleration of an object is directly proportional to the force applied to it, and inversely proportional to its mass. Mathematically, this can be expressed as:
F = ma
where F is the force applied to an object, m is its mass, and a is its resulting acceleration.
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2. A grinding wheel, initially at rest, is rotated with constant angular acceleration a = 5.0 rad/s^2 for 8.0s. The wheel is then brought to rest, with uniform negative acceleration, in 10 rev. Determine the negative angular acceleration required and the time needed to bring the wheel to rest.
The negative angular acceleration required to bring the wheel to rest is approximately -0.126 rad/s^2, and the time needed to bring the wheel to rest is approximately 20.04 seconds.
Step by step explanationLet's first find the initial and final angular velocities of the wheel.
The initial angular velocity is zero because the wheel is initially at rest.
The final angular velocity can be found using the formula:
ωf = ωi + αt
where
ωf = final angular velocity
ωi = initial angular velocity (which is zero)
α = angular acceleration (5.0 rad/s^2)
t = time (8.0 s)
ωf = 0 + (5.0 rad/s^2)(8.0 s) = 40.0 rad/s
The negative angular acceleration can be found using the formula:
Δω = ωf - ωi = αt
where
Δω = change in angular velocity (which is equal to the final angular velocity because the initial angular velocity is zero)
α = angular acceleration (which is negative because the wheel is slowing down)
t = time
So we have:
Δω = 40.0 rad/s
αt = -α(10 rev)(2π rad/rev)/t
where we have converted 10 revolutions to radians (2π radians per revolution).
Setting these two expressions equal to each other and solving for α, we get:
α = -Δω/t = -(40.0 rad/s)/(10 rev x 2π rad/rev x t)
α = -2.53/t rad/s^2
Finally, we can use the formula for angular deceleration to find the time needed to bring the wheel to rest:
ωf^2 = ωi^2 + 2αΔθ
where
Δθ = angle through which the wheel rotates during the deceleration (which is 10 revolutions)
ωf = final angular velocity (which is zero)
ωi = initial angular velocity (which is 40.0 rad/s)
α = angular acceleration (which is negative)
So we have:
0 = (40.0 rad/s)^2 + 2(-2.53/t)(10 rev x 2π rad/rev)
0 = 1600 - 318.48/t
t = 20.04 s
Therefore, the negative angular acceleration required to bring the wheel to rest is approximately -0.126 rad/s^2, and the time needed to bring the wheel to rest is approximately 20.04 seconds.
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Answer question in photo
The potential energy of an object is the product of its mass, acceleration due to gravity and height of the object from the surface. Here, the potential energy of the object is 3118.2 J.
What is potential energy ?Potential energy of an object is the energy generated by virtue of its position. It is the energy stored on the object when it is at rest. When the object starts moving its potential energy starts to convert to kinetic energy.
the potential energy of an object is related to its mass, acceleration due to gravity g and height from the surface h as:
P = mgh.
then, m = 26.21 Kg
h = 12.14 m
g = 9.8 m/s²
p = 26.21 Kg × 9.8 m/s² × 12.14 m = 3118.2 J.
Therefore, the potential energy of the object is 3118.2 J.
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Heat is defined as
A.
the average kinetic energy of the particles that make up an object.
B.
the energy stored in an object due to the position of its particles.
C.
the sum total of all the kinetic energy of the particles within an object.
D.
the amount of thermal energy transferred from one object to another.
Reset Next Question
The kinetic energy of an object is the energy that is associated with its motion. The average kinetic energy of the particles that make up an object is a measure of the temperature of the object.
What is kinetic energy?
Kinetic energy is the energy that an object possesses due to its motion. Any object that is moving has kinetic energy. The amount of kinetic energy that an object has depends on its mass and its velocity. The equation for calculating the kinetic energy of an object is KE = 0.5 * m * v^2, where KE is the kinetic energy, m is the mass of the object, and v is the velocity (speed) of the object.
The correct answer is A: the average kinetic energy of the particles that make up an object.
The kinetic energy of an object is the energy that is associated with its motion. The average kinetic energy of the particles that make up an object is a measure of the temperature of the object. The higher the temperature of an object, the greater the average kinetic energy of its particles.
Option B describes potential energy, which is the energy stored in an object due to the position of its particles. This energy can be converted into kinetic energy if the object is allowed to move.
Option C describes thermal energy, which is the total energy of all the particles within an object, including both kinetic and potential energy.
Option D describes heat transfer, which is the transfer of thermal energy from one object to another due to a temperature difference.
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Identify the direction of net force. A car is driving across a flat roas ,assume no air resistance
Assuming the car is driving across a flat road with no air resistance, the direction of net force acting on the car will depend on the direction of the car's motion and the forces acting on it.
If the car is traveling at a constant velocity, then the net force acting on it is zero. This is because the forces acting on the car - such as the force of the engine, friction from the tires, and air resistance - are balanced and cancel each other out. However, if the car is accelerating or decelerating, then there is a net force acting on it. For example, if the car is accelerating forward, then the net force acting on it is in the forward direction. This is because the force of the engine pushing the car forward is greater than the opposing forces, such as air resistance and friction. Similarly, if the car is decelerating, then the net force acting on it is in the opposite direction of its motion. This is because the opposing forces are greater than the force of the engine, causing the car to slow down.
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An object is moving at a velocity of 11.5 m/s to the left. How far does it move in
312.24 seconds?
Answer:
[tex]\huge\boxed{\sf d = 3590.76\ m}[/tex]
Explanation:
Given data:Velocity = v = 11.5 m/s
Time = t = 312.24 s
Required:Displacement = d = ?
Formula:d = v × t
Solution:d = 11.5 × 312.24
d = 3590.76 m[tex]\rule[225]{225}{2}[/tex]
On Saturday nights, Greg, likes to go to the Frisco Disco, where he can dance under the strobe light. The strobe contains a 200, u capacitor that stores charge over a 1000 V potential difference. If the strobe flashes 4 times each second, what is the current flow created by the strobe's capacitor?
Explanation:
The current flow created by the strobe's capacitor can be calculated using the formula:
I = C * (ΔV / Δt)
where I is the current flow, C is the capacitance, ΔV is the potential difference, and Δt is the time interval between flashes.
Substituting the given values, we get:
I = 200 * 10^-6 F * (1000 V / 1 s) * 4
Simplifying this expression, we get:
I = 0.8 A
Therefore, the current flow created by the strobe's capacitor is 0.8 amperes
If an object with a charge of 0.08 C experiences an electric force of 5.0 what is the electric field strength ?
Please show your work this is due today. Giving out brainliest.
Answer:
The electric field strength 62.5 N/C.
Explanation:
The electric force (F) on an object with charge q in an electric field with strength E can be calculated using the formula:
F = qE
Rearranging this formula, we can solve for the electric field strength:
E = F / q
In this case, the object has a charge of q = 0.08 C and experiences an electric force of F = 5.0 N. Substituting these values into the formula, we get:
E = 5.0 N / 0.08 C
E = 62.5 N/C
So, the electric field strength is 62.5 N/C.
Which two statements describe force?
A. A force can be a push or a pull
B. Force cashes an objects motion to remain constant
C. Force is the ability to change an objects motion
D. A force can have mass or weight
Answer:
A. A force can be a push or pull
D. A force can have mass or weight
Answer question in the photo
A weight lifter does 1700.44 Joules of work to lift the barbell from the floor to a height of 9.90 meters.
How to solve for work done?To calculate the work done by the weightlifter, we need to use the formula:
Work = force x distance x cos(theta)
where force is the weight of the barbell, distance is the height it is lifted, and theta is the angle between the force and the direction of motion. Since the weightlifter is lifting the barbell straight up, theta is 0 degrees and cos(theta) is 1.
So, we have:
Work = 171.60 N x 9.90 m x 1
Work = 1700.44 Joules
Therefore, the weightlifter does 1700.44 Joules of work to lift the barbell from the floor to a height of 9.90 meters.
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help please I don't understand
The force line which shows the force of gravity that the Earth exerts on the Moon is line A.
The reason Line A is thicker than arrow B is because the Earth exerts a greater force of gravity on the Moon.
How to describe the gravity exerted ?According to Newton's Third Law of Motion, for every action, there is an equal and opposite reaction. Therefore, the gravitational force exerted by the Earth on the moon is equal in magnitude and opposite in direction to the gravitational force exerted by the moon on the Earth.
The force of gravity between two objects depends on their masses and the distance between them, so the force of gravity between the Earth and moon is proportional to their masses and the distance between them. While the moon's gravity does have an impact on the Earth, such as causing ocean tides, it is not a greater force than the Earth's gravity.
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Gravitational potential energy is the energy stored in an object due to its height
above a reference level. Which of the following choices best describes the
correct formula of gravitational potential energy?
ΔU = mgh is the expression to Gravitational Potential Energy for Height (h).
What kind of energy from gravitational potential is that?A book on even a high shelf, for instance, has more energy potential than a book here on bottom shelf since it requires a longer distance to fall. Items having gravitational potential energy can also include the following: a heavier burden. water retentive to a dam.
Why does kinetic energy differ from gravitational potential energy?The energy held within an item as a result of its height above the ground is known as gravitational potential energy. The object's height, gravitational acceleration caused by the Earth, and mass all play a role in this. The energy an item possesses as a result of its motion is known as kinetic energy.
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Help pls!!
Calculate the wavelength of a water wave with a speed of 2.3 m/s and
frequency of 5 Hz.
Answer:
The speed of a wave (v) is equal to the product of its wavelength (λ) and frequency (f), i.e., v = λf. Rearranging this equation, we get:
λ = v/f
Substituting the given values, we get:
λ = 2.3 m/s / 5 Hz
λ = 0.46 meters
Therefore, the wavelength of the water wave is 0.46 meters.
Explanation:
Answer:
The wavelength is 0.46 meters.
Explanation:
The speed of a wave is given by the formula:
v = λf
where v is the wave speed, λ is the wavelength, and f is the frequency.
We are given v = 2.3 m/s and f = 5 Hz. Rearranging the formula above to solve for λ, we get:
λ = v/f
Substituting the given values, we get:
λ = 2.3 m/s / 5 Hz = 0.46 m
Therefore, the wavelength of the water wave is 0.46 meters.
A caterpillar climbs 1.3 m up a tree, then 0.72 m right, out onto a limb to eat a leaf. What is the magnitude of the resultant displacement of the caterpillar? A 2.2 m , B1.4 m ,C 1.5 m ,D 1.1 m
The magnitude of the resultant displacement of the caterpillar is 1.4m. Therefore, option B is correct.
What is displacement?The change in the position of an object is called displacement, it is the distance between starting and endpoints. It has both magnitude and direction, it is a vector quantity.
If a caterpillar climbs 1.3 m up a tree, then 0.72 m right, the magnitude of resultant displacement is given by:
H² = P² + B²
H² = (1.3)² + (0.72)²
H² = 1.69 + 0.51
H = [tex]\sqrt2.2[/tex]
H = 1.4m
Thus, the magnitude of the resultant displacement of the caterpillar is 1.4m. Therefore, option B is correct.
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How much heat is needed to change 7.2 kg of solid ethyl alcohol at "-211*C" to liquid at 50.0*C?
Please show all work! Thank you!
There is a requirement for 1,638,000 Joules of heat.
How do you convert joules into heat?Q=I2Rt provides the Joule's heating formula. Joule's heating formula states that the amount of heat produced is proportional to the length of time that the electrical resistance and current are both constant.
The following equation must be used:
Q = m × Lfus + m × Cp × ΔT
Ethyl alcohol has a heat of fusion of 105 J/g and a specific heat capacity of 2.44 J/g°C.
The amount of ethyl alcohol is specified as 7.2 kg, or 7,200 g.
The ethyl alcohol must be melted at a temperature of:
Q1 = m × Lfus =
7,200 g × 105 J/g
= 756,000 J
In order to raise the temperature of the liquid ethyl alcohol from 0°C to 50°C, we must determine the amount of heat needed:
ΔT = 50°C - 0°C
= 50°C
The amount of heat required to raise the temperature of the liquid ethyl alcohol is:
Q2 = m × Cp × ΔT
= 7,200 g × 2.44 J/g°C × 50°C
= 882,000 J
As a result, the total amount of heat needed to transform 7.2 kg of solid ethyl alcohol from -211°C to 50.0°C into a liquid is:
Q = Q1 + Q2 = 756,000 J + 882,000 J
= 1,638,000 J
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A gas of volume 1 l at 10 degree Celsius is heated in such a way that both its volume and pressure become double calculate the final temperature of the gas
Answer:
P V = N R T describes an ideal gas
T2 / T1 = P2 V2 / (P1 * V1) = 4
T1 = 273 + 10 = 283 initial absolute temperature of gas
Carlos was playing on a slide on a sunny summer day. Which property of the slide tells Carlos how much energy the slide absorbed from the Sun?
O the mass
O the color
O the height
O the temperature
Answer:
Its D
Explanation:
just did It :)
How does changing the distance influence the force between the two charges?
As the distance __________, the absolute value of the force ___________.
increases; increases
increases; decreases
increases; does not change
decreases; does not change
Explanation:
As the distance increases, the absolute value of the force decreases. Therefore, the correct answer is "increases; decreases". This is in accordance with Coulomb's Law, which states that the force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. As the distance between the charges increases, the force between them decreases because the inverse square relationship causes the force to weaken rapidly with distance.
A small child weighs 25 kg. If mommy left him sitting on top of the stairs, which are 10 m high, how much energy does the child have?
Answer:
PE = 2450 Joules
KE = Assuming the child is at rest (not moving or accelerating), there is no Kinetic Energy
Explanation:
PE = potential energy
m = mass
g = gravity
h = height
PE = mgh
m = 25 kg
h = 10 m
g = 9.8 (when on Earth, gravity is always this number with more or less decimals)
[tex]PE = (25)(9.8)(10)=2450J[/tex]
As shown in the diagram, two metal-coated pith balls are suspended by a thread and given a charge so they are held apart by a force of repulsion. Which diagram best shows the position of the pith balls after they are both touched by an experimenter's finger?
The pith balls are having same charge and that is why they are held apart by the force of repulsion. When they both touched by the experimenter's finger they both gets attracted to the finger and comes in contact as in B.
What is electrostatic force ?Electrostatic force between two charges are arise when the charged bodies comes in contact. There are both force of attraction and repulsion. The electrostatic force of attraction results from the two unlike charges and the force of repulsion arise between two like charges.
Here, the pith balls are charged alike, hence they will get repelled. Ig they are negatively charged, the electrons will flow from them to the other body in touch.
When the experimenter touch his finger on the charged ball, the finger gets polarized and attracted to the ball , they gets in contact as in figure B.
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Identify What limits the speed at which the ball will leave the racket?
The maximum speed at which the racket can move is limited by the physical ability of the player.
What limits the speed at which the ball will leave the racket?The speed at which a ball leaves a racket is determined by several factors, including the speed of the racket at impact, the angle of the racket face, and the properties of the ball itself.
The maximum speed at which the racket can move is limited by the physical ability of the player. A player can only swing the racket so fast before they reach their physical limits. Additionally, the angle at which the racket strikes the ball affects the ball's speed. If the racket face is angled too steeply or too shallowly, it can decrease the speed of the ball.
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