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3 years ago

Find the difference in temperature between the water at the top and the bottom of a waterfall 100 m high.

Physics

2 answers:

Alekssandra [29.7K]3 years ago

7 0

The answer would be 60 cuz a watetfall is a waterfall

posledela3 years ago

7 0

The temperature at the top of the waterfall would be warmer than at the bottom because while the water is falling its causing the temperature to drop to lower Degrees

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A brick falls to the ground. if the time for the collision of the brick and the ground is increased by a factor of 4, the force

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Answer:

By a factor of 1/4.

Explanation:

The impulse force that applies to an object undergoing rapid deceleration just before coming to a stop on the ground is given by the following formula,

$\\\begin{aligned}\\\small F &=\small \frac{\Delta (mV)}{\Delta T}\end{aligned}$

in which $\small \Delta (mV)$ , $\small \Delta t$ represent the change in momentum and the time taken for that change.

If one increases the time that is taken for the momentum change (which remains constant for this situation) by a factor 4 and if that new force is represented by $\small F_1$ , the following manipulation confirms the answer to this question.

$\begin{aligned}\\\small F_1 &=\small \frac{\Delta (mV)}{4\Delta t}\\\\&=\small \frac{1}{4}\times\bigg[\frac{\Delta (mV)}{\Delta t}\bigg]\\\\&=\small \frac{1}{4}F\end{aligned}$

Here $\small F$ is the force that was applied to the object previously.

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1 year ago