Answer: The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another.

Explanation:

5 0

2 years ago

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malfutka [58]

Answer:

<em>The penny will hit the ground at 6.39 seconds</em>

Explanation:

The penny is dropped from a height of y=200 m. The equation of the height on a free-fall motion is given by:

$\displaystyle y=\frac{gt^2}{2}$

Where $g=9.8\ m/s^2$ , and t is the time.

Solving for t:

$\displaystyle t=\sqrt{\frac{2y}{g}}$

Using the value y=200:

$\displaystyle t=\sqrt{\frac{2*200}{9.8}}$

t=6.39 sec

The penny will hit the ground at 6.39 seconds

4 0

3 years ago

Calculate the heat energy conducted per hour through the side walls of a cylindrical steel

Maru [420]

Explanation:

heat caoacity and heat is difference

7 0

2 years ago