Plzz Help worth 10 points!!! which statement about energy transformations is not true?

Physics

2 answers:

8090 [49]2 years ago

7 0

Letter A because energy can only be transformed from one to another not to just one. hoped that helped

EleoNora [17]2 years ago

6 0

I think it could be A

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Olenka [21]

Answer:

Explanation:

In absence of friction, total mechanical energy must be conserved.
This means that the change in gravitational potential energy (in magnitude) must be equal to the change in kinetic energy:

$\Delta K = \Delta U \\ \\ \frac{1}{2} * m* v^{2} = m*g*h$

As it can be seen, the mass m is on the both sides of the equation, which means that it can be simplified.
We can solve this equation for v (speed at the bottom) as follows:

$v = \sqrt{2*g*h}$

As it can be seen, the mass has no part in the equation, so, due both are starting from the same height, both people have the same speed at the bottom.
The option c is the right one.

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irina1246 [14]

Answer:

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Explanation:

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2 years ago

The doppler effect is sensitive only to motion along the line of sight. <br> a. True <br> b. False

4vir4ik [10]

Its vey True trust me on this when I say it is

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mixer [17]

Your answer is A

Pls mark me brainiest and I sure hope this helps you