Work, Energy and Power

Related Questions

• Which of the following is a unit of energy

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• An engine pumps up 100 kg of water through a height of 10 m in 5 s. Given that the efficiency of the engine is 60% . If $g = 10m{s^{ - 2}}$, the power of the engine is

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• A force $(\vec F) = 3\hat i + c\hat j + 2\hat k$ acting on a particle causes a displacement: $(\vec s)\, = - 4\hat i + 2\hat j + 3\hat k$ in its own direction. If the work done is $6\,J,$ then the value of $'c'$ is

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• A force applied by an engine of a train of mass $2.05 \times {10^6}kg$ changes its velocity from $5m/s$ to 25$m/s$ in $5$ minutes. The power of the engine is

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• A truck of mass 30,000kg moves up an inclined plane of slope 1 in 100 at a speed of 30 kmph. The power of the truck is (given $g = 10m{s^{ - 1}})$

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