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Eva8 [605]
3 years ago
6

Can you answer this math homework? Please!

Physics
1 answer:
notka56 [123]3 years ago
5 0

\large \mathfrak{Solution : }

Average speed :

  • \boxed{ \dfrac{distance \:  \: covered}{total \:  \: time \:  \: taken} }

  • \dfrac{100}{8}

  • 12.5 \:  \: m/s

The horizontal (flat) line on a Distance - time graph shows that the body is at rest because the value of Distance (on y - axis ) is same for increasing time ( on x - axis ), it basically shows that the object is at the same position with the change in time.

therefore, correct option is :

  • a. \:  \: the \:  \: object \:  \: is \:  \: not \:  \: moving
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Answer: -4.3\ J,\ 9\ J

Explanation:

Given

(a)

Heat transfer Q=-7.9\ J\quad \text{taken}

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Sand falls from a conveyor belt at a rate of 30 m3m3/min onto the top of a conical pile. The height of the pile is always 3535 o
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Explanation:

As the given data is as follows.

         h = \frac{3}{5}d

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       \frac{dV}{dt} = \frac{16}{9} \pi h^{2} \frac{dh}{dt}

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