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Irina-Kira [14]
4 years ago
5

IF it possible for an object to move for 10 seconds at a high speed and end up with an average velocity of zero? true or false

Physics
2 answers:
marishachu [46]4 years ago
4 0

True, if you move something forward at 100 miles an hour but your on something moving backwards 100 miles an hour you up staying in the same location, aka zero velocity.

guapka [62]4 years ago
4 0

It's true and possible.  Velocity over a period of time depends on the displacement during that time.  Displacement is measured between the start point and end point.  If, say, you're moving along a circular track, and you stop when you reach the point where you started from, your displacement is zero, so your average velocity for the trip around the circle would be zero.

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Which of the following experiments or phenomena provided evidence for the particle nature of light?
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Expulsion of electrons with varying frequencies of light observed in the photoelectron effect.

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A 5.0-kg bar of lead is placed inside a 12-L chamber filled with helium gas. The temperature of the lead and helium is the same.
Pavlova-9 [17]

As the temperature of the lead and helium is the same. Thus the average kinetic energy is also the same for lead and helium.

Reason:

It is given that a 5.0-kg bar of lead is placed inside a 12-L chamber filled with helium gas. The temperature of the lead and helium is the same. It is required to compare the average kinetic energy of the lead atoms and helium atoms.

The average kinetic energy is calculated as, K=\frac{3}{2} \frac{R}{N} T.

Here K is the average kinetic energy,  R is the gas constant, N is the Avogadro's number, and T is the temperature.

As the temperature is the same for both lead and helium. As a result, the average kinetic energy is also the same for lead and helium.

Learn more about average kinetic energy here,

brainly.com/question/1599923

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