3 years ago

Most rocks contain more than one type of

Physics

1 answer:

ValentinkaMS [17]3 years ago

8 0

Answer: Mineral

Explanation:

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If a neutral material like fur is rubbed on another neutral object like a rubber ball what is the resulting charges of the objec

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Answer:

Explanation:

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Use the graph below to answer the following question: if average acceleration is calculated using the equation, “ change in velo

sergiy2304 [10]

Answer:

$a=9\ cm/s^2$

Explanation:

<u>Average Acceleration </u>

Acceleration is a physical magnitude defined as the change of velocity over time. When we have experimental data, we can compute it by calculating the slope of the line in velocity vs time graph.

Note: <em>We cannot see if the time axis is numbered in increments of 1 second, and we'll assume that. </em>

When $t_2=4\ sec$ , the graph shows a value of $v_2=36\ cm/s$

When $t_1=0\ sec$ , the object is at rest, $v_1=0$

We compute the average acceleration as

$\displaystyle a=\frac{v_2-v_1}{t_2-t_1}$

$\displaystyle a=\frac{36\ cm/s-0\ cm/s}{4\ sec-0\ sec}$

$\displaystyle a=\frac{36\ cm/s}{4\ s}$

$\boxed{a=9\ cm/s^2}$

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2 years ago

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2 years ago

How many joules of work are done on a box when a force of 25 N pushes it 3 m?

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Answer:

75joules

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Workdone = force x distance

workdone = 25 x 3

workdone = 75joules

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