A small, closed chamber of gas is heated. When the gas in the chamber expands,it does 5 J of work on a piston. The gas has an in
1 answer:
Given:
Work done, W = 5 J
Initial energy = 8J
Final energy = 30J
Let's determine if the work done have a positive or nrgative value.
Appy the equation for the first lae of thermodynamics:
Where:
U is the change in internal energy
Q is the added heat
W is the work done
To find the work done here, we have:
Rewrite the formula for W
Where:
ΔU = 30J - 8J = 22J
Q = 5J
Thus, we have:
Therefore, the work done here is -17J.
This means the work done in this scenario has a negative value.
ANSWER:
The work done in this scenario has a negative value
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The velocity of the river does not change the velocity and therefore the distance traveled in the direction of the boat which is directed perpendicular to it
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= 3 m/s
= 4 m/s
The width of the river, = 6 meters, we have;
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The direction, θ, is given as follows;
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The length of the path the boat takes = 10 m
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Which expresses that the time taken is the same and given that the
vectors of the velocities of the river and the boat are perpendicular, the
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