A freezer has a coefficient of performance of 4.1. You place 0.45 kg of water at 16°C in the freezer, which maintains its temper
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Answer:
The average velocity of a train moving along a straight track if its displacement is 192 m was during a time period of 8.0 s is 24 .
Explanation:
Velocity is a physical quantity that expresses the relationship between the space traveled by an object and the time used for it. Then, the average velocity relates the change in position to the time taken to effect that change.
Velocity considers the direction in which an object moves, so it is considered a vector magnitude.
In this case, the displacement is 192 m and the time period is 8 s. Replacing:
Solving:
velocity= 24
<em><u>The average velocity of a train moving along a straight track if its displacement is 192 m was during a time period of 8.0 s is 24 </u></em><em><u>.</u></em>
The kinetic energy K given to the helium nucleus is equal to its potential energy, which is
where q=2e is the charge of the helium nucleus, and
is the potential difference applied to it.
Since we know the kinetic energy, we have
and from this we can find the potential difference:
where q=2e is the charge of the helium nucleus, and
Since we know the kinetic energy, we have
and from this we can find the potential difference: