A ball falling has both potential energy and kinetic energy. Where do you think it has the most potential energy and where do you think it has the more kinetic energy?

Answer:

The kinetic energy decreases.

Explanation:

Friction is defined as a opposite force to motion. If friction is the only force acting on an objects, its kinetic energy decreases.

It is so because due to resistive force or friction, kinetic energy is converted to heat energy and that reduces the total kinetic energy in the system.

Hence, the correct answer is "The kinetic energy decreases."

The assumptions must be made base in the object’s kinetic energy in a situation whereby frictional force is the only force acting on an object is A:The kinetic energy decreases.

Therefore, option A is correct.

Learn more at:

https://brainly.com/question/3763752?referrer=searchResults

By finding the specific heat, we can expect that the material of the block is copper or silver (or a mix).

We know that we give 13,500 joules of energy to the metal block (which we assume has a mass of 1kg) and the temperature increases from 15°C to 60°C.

Then the increase is:

60°C - 15°C = 45°C

Then this metal has a specific heat of:

H = 13,500j/(45°C*1 kg) = 300 J/°C*kg

So it could be copper, which has a specific heat of 380J/°C*kg or Silver, which has a specific heat of 240 J/°C*kg (or a mix of these two).

If you want to learn more about specific heat:

https://brainly.com/question/6198647

#SPJ1

Answer:

The process of evaporative cooling helps the body is explained below in complete details.

Explanation:

Your body performs the application of the evaporative process when secreting. Sweat, which contains 90 percent water, commences evaporating. ... This appears in a cooling impression (described as evaporative cooling) that serves to sustain body temperature and cools the body down when it becomes too hot.

Answer:

The magnitude of the displacement is  \(H = 14.14 \ km\)

Explanation:

From the question we are told that

  The distance of the car to north is  d =  10 km

   The distance of car to the west is  w =  - 10 \  km

The negative sign is because the direction is  west

Generally applying Pythagoras theorem , the displacement is  

         \(H = \sqrt{d^2 + w^2}\)

=>      \(H = \sqrt{(10)^2 + (-10)^2}\)

=>     \(H = 14.14 \ km\)

The angular momentum of the Earth is approximately \(7.16*10^{33} Kg\) \(m^{2} /s\)

Yes, angular momentum affects the motion of an object. Angular momentum is a measure of an object's rotational motion and its tendency to continue rotating. It is a vector quantity that is proportional to the angular velocity of an object and the moment of inertia of the object.

According to the law of conservation of angular momentum, the total angular momentum of a closed system remains constant if no external torque acts on it.

The angular momentum of a rotating body can be calculated using the formula: L = Iω

L = (2/5)m(\(r^{2}\)) * (2π / 86,400)

L = (2/5) * (5.979 × \(10^{24}\) kg) * (6.376 × \(10^{6}\) \(m)^{2}\) * (2π / 86,400 s)

L = 7.16 × \(10^{33}\) kg \(m^{2}\)/s

Therefore, the angular momentum of the Earth is approximately \(7.16*10^{33} Kg\) \(m^{2} /s\)

To know more about inertia visit:

https://brainly.com/question/3268780

#SPJ4

Answer: The weight of the probe will increase.

Answer:

3.96 meters / sec

Explanation:

The skaters Kinetic Energy is converted to Potential Energy ( ignoring friction)

KE = PE

1/2  * 55 * v^2 = 55 * 9.81 * .8

solve for v = 3.96 m/s

Consider that only stars with masses in between 30 and 70 Sun's masses could be black holes. This is because only stars with enough mass have the enough gravitational force to overcome the radiation pressure of the star and thus cause the star to collapse and become a black hole.

UY Scuti has in between 7 and 10 Sun's masses, then, it is not possible this star becomes a black hole.

In case if UY Scuti has a mass above a certain threshold, it could potentially collapse into a black hole after the supernova event.

UY Scuti, the largest known star in terms of radius, is yet unknown as to its future development and destiny.

It is predicted that UY Scuti, a red supergiant star, will experience a supernova explosion at some point in the future.

A large star that goes supernova unleashes a tremendous amount of energy and experiences a catastrophic explosion.

Thus, the star's mass determines the explosion's specific consequence. After the supernova event, UY Scuti might possibly collapse into a black hole if its mass is greater than a predetermined limit.

For more details regarding supernova, visit:

https://brainly.com/question/32402054

#SPJ6

Answer:

1.667 m/s ^2

Explanation:

we use the formula F=ma

F= 12.5 N

m= 7.5 kg

a=?

F=ma

12.5= 7.5 x a

a= 12.5/7.5

a= 1.667 m/s^2

To determine the acceleration of each block, we need to consider the forces acting on them. Coefficient of static friction between a and b, μs = 0.4, Coefficient of kinetic friction between a and b, μk = 0.3, Force applied to block a, P = 9 N.

The force of static friction (Fs) can be calculated using the coefficient of static friction (μs) and the normal force (N) between block A and the surface it rests on. Since the surface is smooth, there is no vertical force acting on block A, and the normal force is equal to the weight of block A, given by N = m * g, where m is the mass of block A and g is the acceleration due to gravity. The force of static friction can be expressed as Fs = μs * N. If the force applied (P) is less than or equal to the force of static friction (Fs), block A will not move, and the acceleration of both blocks will be zero. If the force applied (P) is greater than the force of static friction (Fs), block A will start to move, and the force of static friction will be at its maximum value. At this point, the force of kinetic friction will be acting on block A, and its magnitude can be calculated using the coefficient of kinetic friction and the normal force (N). The force of kinetic friction can be expressed as kinetic force = μk * N. Since there is no net external force acting on block B, its acceleration will be zero.

To learn more about forces, https://brainly.com/question/13191643

#SPJ11

The gravitational potential energy is  1.10× 10^4 J.

Gravitational potential energy is the energy that an object possesses due to its position in a gravitational field. It is the energy an object has as a result of its vertical position relative to a reference point in a gravitational field. The reference point is typically the surface of the Earth, and the vertical position is often measured relative to sea level.

We know that the gravitational potential energy is the energy that is expended to move the balls from one point to the other and that is  1.10× 104 J.

Learn more about gravitational potential energy:https://brainly.com/question/19768887

#SPJ1

The concentrated reaction to the column due to the weight of the slab on a single level is 37,500 lb.

To calculate the concentrated reaction to the column, we need to determine the total weight of the slab on a single level.

Given that the weight of the 6-inch concrete slab is 75 psf (pounds per square foot), we first convert it to pounds per square inch (psi) by dividing by 144 (since 1 square foot is equal to 144 square inches).

Weight of slab per unit area = 75 psf / 144 = 0.5208 psi

Next, we calculate the area of the slab on a single level by multiplying the spacing in the long direction (25 ft) by the spacing in the short direction (20 ft).

Area of slab = 25 ft * 20 ft = 500 sq. ft

Finally, we multiply the weight per unit area by the area of the slab to find the total weight of the slab on a single level.

Total weight of slab = 0.5208 psi * 500 sq. ft = 260.4 lb

Therefore, the concentrated reaction to the column due to the weight of the slab on a single level is 37,500 lb.

To learn more about weight,click here:
brainly.ph/question/58869

#SPJ11

Answer:

  v = 11.7 m / s

Explanation:

For this exercise we can use the conservation of energy

starting point. Where you drop the stone

          Em₀ = K + U = ½ m v² + m g h₁

final point. Point where the stone arrives

          Em_f = U = mgh₂

We are assuming that there is no friction, so the energy is conserved

          Em₀ = Em_f

          ½ m v² + m g h₁ = m g h₂

         v² = 2g (h₂-h₁)

let's calculate

         v² = 2 9.8 (17 - 10)

         v = √137.2

         v = 11.7 m / s

C) fault-block mountain

Answer:

second is the SI unit of time

Between the value 400 nm and 700 nm there is an infinite amount of real values that can represent the length of a wavelength.

If we consider that each differente wavelength represents a different color, therefore there are infinite possible colors in the interval from 400 nm to 700 nm.

But if we consider only certain intervals of wavelength as certain colors, we can have for example 7 colors:

Violet, Indigo, Blue, Green, Yellow, Orange, Red.

Answer:

Explanation:

In physics, work can be described as force multiplied by the displacement of the object (distance caused by the force acted on the object).

Work is a form of energy, therefore, it is measured in joules.

If Alex pushed on an object with 10N of force, and the object moved 2 meters, the work of Alex will be equal to:

W = Ft

W = 10N * 2m

W = 20 Joules

But, if we have John, that pushed on an object with 2N of force, but, since the object was way smaller, therefore it had way less inertia, the object moved a distance equal to 10 meters. Let's also calculate his work.

W = Ft

W = 2N * 10m

W = 20 Joules

And we got the same result.

Work can also be used to calculate power.

Power is equal to P = Work / time

It can also be written as P = delta Work / delta time

Power is measured in joules per second.

With power you can make the difference between someone that got a 2 kg object up in 2 second, and someone that got a 2 kg object up in 5 second.

The more powerful one would be the one who managed to make the same work in less time.

Hope it Helped!

Work is described as: the measure of energy transfer resulting from the application of force over a displacement.

In the field of physics, work is most accurately defined as the outcome of multiplying the force exerted on an object by the distance the object is displaced in the same direction as the force.

This calculation serves to quantify the energy transferred to or from the object. For instance, if an individual applies a 50 Newton force to push a box across a 5-meter distance in the force's direction, the work done on the box would equal 250 Joules (50 N × 5 m).

Learn more about Work on:

https://brainly.com/question/14813637

#SPJ6

The static friction between the block and the plane is \(40(\mu_s) \ N\).

The given parameters:

The normal reaction on the rough surface due to weight of the block is calculated as follows;

\(F_n = 40 \ N\)

The static friction between the block and the plane is calculated as follows;

\(F_s = \mu_s F_n\)

where;

Thus, the static friction between the block and the plane is \(40(\mu_s) \ N\).

Learn more about static friction here: https://brainly.com/question/13680415

The acceleration of the ball as it slides down the incline is (5/2)g sin θ. Correct answer is d.

The potential energy of the ball at the top of the incline is converted to kinetic energy at the bottom of the incline. Therefore, we can equate the potential energy at the top to the kinetic energy at the bottom:

mgh = (1/2)mv²

where m is the mass of the ball, g is the acceleration due to gravity, h is the height of the incline, and v is the velocity of the ball at the bottom of the incline.

We can rewrite the equation as:

v² = 2gh

The moment of inertia of the ball is (2/5)MR², where M is the mass of the ball and R is the radius of the ball. The torque acting on the ball as it rolls down the incline is due to the force of gravity acting on the center of mass of the ball. The moment of inertia and torque allow us to determine the angular acceleration of the ball.

τ = Iα

where τ is the torque, I is the moment of inertia, and α is the angular acceleration. The torque acting on the ball is given by:

τ = mgh sin θ

where θ is the angle of the incline.

Substituting the moment of inertia and torque into the equation for angular acceleration:

mgh sin θ = (2/5)MR² α

α = (5/2)g sin θ / R

The linear acceleration of the ball down the incline is equal to the product of the angular acceleration and the radius of the ball:

a = αR = (5/2)g sin θ

Therefore, the answer is (d).

To know more about incline, here

https://brainly.com/question/16909712

#SPJ4

--The complete question is, A ball with (2/5)MR^2 is released from rest at the top of an incline of height, h at an angle θ. There is no friction between the ball and the surface of the incline. What is the acceleration of the ball as it slides down the incline?

a. g/2

b. g sinθ

c. 2g cos θ

d. (5/2)g sin θ

e. 0--

The result of two or more vectors is the outcome.  it's the outcome of multiplying two or more vectors.  The resultant result of adding the displacement vectors A, B, and C are vector R. An appropriately drawn, scaled, vector addition diagram is often used to compute vector R, as illustrated within the diagram.

What do three resultant vectors add up to?

Afbeeldingsresultat for these vectors' offspring

The outcome of multiplying vectors A + B + C is the same as that of multiplying vectors B + A + C or even C + B + A.  The resultant result will be the same as long as all three vectors are present with the appropriate magnitude and direction. The resultant of two or more vectors is the outcome.

To learn more about the resultant from the given link:

brainly.com/question/13797797

#SPJ9

Answer:

energy is the ability to do work

Explanation:

this is explained because you need to put more effort to work which is known as energy

The given scenario describes a water supply system for a high-rise building, consisting of two centrifugal pumps operating in parallel.

Water is pumped from an open tank in the basement to another open tank 37.5 meters away, with a diameter of 50 mm and a friction factor of 0.02. The water surface of the second tank is 25 meters higher than the supply tank.

The system includes various minor losses, such as a filter, two pumps, and a valve, each with their respective minor loss coefficients. The operation characteristics of the centrifugal pump are provided in Table Q2, indicating the pump head, flow rate, and efficiency for different operating points.

In this water supply system, two identical centrifugal pumps are employed to regulate the supply of water. The system aims to transport water from the basement tank to the elevated tank by overcoming the frictional losses in the pipeline and accounting for minor losses caused by the filter, pumps, and valve.

The centrifugal pumps operate in parallel, allowing for adjustable water supply. To determine the specific operating point for the pumps, the pump head, flow rate, and efficiency characteristics are referred to from Table Q2. These characteristics provide information on how the pump performs at different flow rates, offering insights into the head generation capability and efficiency of the pump.

By analyzing the given data and considering the requirements of the system, an optimal operating point can be selected to ensure efficient water supply while accounting for the head losses in the pipeline and minor losses within the system.

Learn more about  friction factor click here:

brainly.com/question/29155393

#SPJ11

The tension in the cord is 81.82 N, if the elevator moves 1 m in the first 1.8 seconds.

Initial speed of the elevator, u = 0 (at rest)

Distance travelled by the elevator, S = 1 meter

Time taken to cover the that distance, t = 1.8 s

Let the acceleration of the elevator = a

Mass of the bundle, m = 8.9 kg

By the second equation of motion,

S =ut + 0.5at²

1 = 0 × 1.8 + 0.5×a×1.8²

a = 2/1.8²

Acceleration, a = 0.617 m/s²

Weight of the bundle acting downward = 8.9×9.81 = 87.31 N

Upward force on the bundle, F = 8.9 × 0.617 = 5.49

Net tension in the cord = (87.31 - 5.49)

= 81.82 N

To know more about, acceleration, here

https://brainly.com/question/12550364

#SPJ4

The intensity of the approaching subway train sound is 10,000 times greater than the intensity of a normal conversation.

To determine the intensity ratio of the two sounds, we need to use the formula:
Intensity ratio = 10^(difference in decibels/10)

The difference in decibels between the approaching subway train (100 dB) and a normal conversation (60 dB) is 40 dB.

So, the intensity ratio of the two sounds would be:
Intensity ratio = 10^(40/10)
Intensity ratio = 10^4

It is important to note that decibels are a logarithmic unit of measurement, which means that each increase in 10 decibels corresponds to a 10-fold increase in sound intensity. Therefore, a 100 dB sound is not simply twice as loud as a 50 dB sound but rather 10,000 times louder. The intensity ratio formula can be used to compare different sounds and determine their relative loudness levels. In this case, the intensity ratio of the approaching subway train sound to a normal conversation is 10,000:1, which demonstrates the significant difference in sound intensity between these two scenarios.

To know more about intensity ratio visit:

https://brainly.com/question/31831793

#SPJ11

Answer: Density=0.8

Explanation: It's 0.8 because you are supposed to do m/v=d and that would be 40/50=0.8

Answer:

The density is 0.8 g/cc.

Explanation:

40g/50mL=0.8 g/cc.

0.8 g/cc is equal to 0.8 g/mL.

Answer:

\(g=25.92\ m/s^2\)

Explanation:

Given that,

The mass of the Jupiter,\(M=1.9\times 10^{27}\ kg\)

The radius of Jupiter,\(r=69,911\ km=69911\times 10^3 km\)

We need to find the acceleration due to gravity on Jupiter. The formula is

\(g=G\dfrac{M}{r^2}\)

Put all the values,

\(g=6.67\times 10^{-11}\times \dfrac{1.9\times 10^{27}}{(69911\times 10^3)^2}\\\\g=25.92\ m/s^2\)

So, the value of acceleration due to gravity on the Jupiter is \(25.92\ m/s^2\).

Answer:

1200 watt

Explanation:

P= I*V=10*120=1200watt