Lifting an object increases the gravitational potential energy of the system. If you release the object, that potential energy will be transformed into the energy of an object in motion which is termed as the kinetic energy as it falls toward earth. Hope this helps.

6 0

3 years ago

Read 2 more answers

What happens to the water molecules in a cup of water as it is warmed?

nika2105 [10]

Answer:

Explanation:

The distance between the water molecules increases. As temperature increases the water molecules gain energy and move more rapidly and this results in the molecules getting further apart

8 0

2 years ago

Scientists _____. Select all that apply.

Annette [7]

The true answer is the choice A
Scientists can predict volcanic eruptions as long as adequate resources are available.Volcanic eruptions are one of the earthly activities which can be predicted by means of adequate resources (warming of the earth's crust, appearance of volcanic lava etc...). By contrast, earthquakes is a dangerous natural disaster that scientists cannot be predicted or mastering the time where it occurs.

5 0

4 years ago

9. When considering a magnet's force of attraction over a known distance, you would expect the strength of attraction 4 inches a

slavikrds [6]

Answer: B. 16 times

Explanation:

The mathematic expression for a magnetic force $F_{M}$ between two magnets is:

$F_{M}=K_{M}\frac{m_{1}m_{2}}{r^{2}}$ (1)

Where:

$K_{M}$ is a constant

${m_{1}$ and ${m_{2}$ are the magnetic charges, which depends on the size of each magnet

$r$ is the distance beteween both magnets

As we can see, this force in inversely proportional to the square of the distance. This means that if we increase the distance, the magnetic force will decrease.

Now, if we increase this value by 4 inches from 1 inch:

$F_{M}=K_{M}\frac{m_{1}m_{2}}{{(4)}^{2}}$ (2)

$F_{M}=K_{M}\frac{m_{1}m_{2}}{16}$ (3)

This means the strength of attraction will be 16 times weaker.

3 0

4 years ago