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3 years ago

How is potential energy transformed into kinetic energy

Physics

1 answer:

san4es73 [151]3 years ago

7 0

Answer:

Potential energy is converted into kinetic energy by a force. For example, when you pick up a rock, you work against gravity to give it some potential energy. And then when you drop it, the gravitational force causes the rock to accelerate towards the ground

Explanation:

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A wave pulse travels along a stretched string at a speed of 100 cm/s. What will be the speed in cm/s if the string's tension is

makvit [3.9K]

Answer:

The new velocity of the string is 100 centimeters per second (1 meter per second).

Explanation:

The speed of a wave through a string ( $v$ ), in meters per second, is defined by the following formula:

$v = \sqrt{\frac{T\cdot L}{m} }$ (1)

Where:

$T$ - Tension, in newtons.

$L$ - Length of the string, in meters.

$m$ - Mass of the string, in kilograms.

The expression for initial and final speeds of the wave are:

Initial speed

$v_{o} = \sqrt{\frac{T_{o}\cdot L_{o}}{m_{o}} }$ (2)

Final speed

$v = \sqrt{\frac{(4\cdot T_{o})\cdot (0.5\cdot L_{o})}{2\cdot m_{o}} }$

$v = \sqrt{\frac{T_{o}\cdot L_{o}}{m_{o}} }$ (3)

By (2), we conclude that:

$v =v_{o}$

If we know that $v_{o} = 1\,\frac{m}{s}$ , then the new speed of the wave in the string is $v = 1\,\frac{m}{s}$ .

5 0

3 years ago

5. SEP Construct Explanations Why are

musickatia [10]

The distribution of the fossil fuel depends on the factors like land, temperature, altitude and so on. Because of the difference in all these factors in different areas, there is unequal distribution of fossil fuels.

Explanation:

The problem of allocation of resources arises due to the scarcity of resources, and refers to the question of which wants should be satisfied and which should be left unsatisfied. Because of the scarcity of resources in some areas, there is low production and therefore low growth in that area.

Most natural resources, including fossil fuels, are not distributed evenly around the Earth. Deposits of fossil fuels depend on the climate and organisms that lived in that region millions of years ago, and the geological processes that have since taken place.

3 0

4 years ago

a 16.0 kg cart is being pulled by a 95.4 N force to the right and a 36.0 N force to the left. What is the acceleration of the ca

Inga [223]

Answer:

The cart's acceleration is $\approx 3.71\,\,\frac{m}{s^2}$

Explanation:

Let's start by finding the net force acting on the cart, and then find its acceleration using Newton's 2nd Law.

Net force = 95.4 N -36.0 N = 59.4 N

Now, since we know the cart's mass, we can use Newton's 2nd Law to find the cart's acceleration:

$F=m\,*\,a\\a=\frac{F}{m} \\a=\frac{59.4}{16} \,\,\frac{m}{s^2} \\a\approx 3.71\,\,\frac{m}{s^2}$

8 0

3 years ago

The last main subatomic particle to be discovered was the _____.

kati45 [8]

The last main subatomic particle to be discovered was the antihelium-4. It was discovered on 2011 and it is measured and produces through the STAR detector. The Antihelium-4 was discovered accidentally when an experiment was conducted. It is also the first particle that was discovered by the means of experiment.

7 0

4 years ago

Which of the following terms best describes why a skier sliding down a hill eventually comes to a stop?

natta225 [31]

Acceleration means you go faster
inertia means it has a tendency to do nothing or remain unchanged
gravity is what pulls things down to earth
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
so i would say friction

6 0

3 years ago

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