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प्रश्न
Is power a scalar or a vector quantity?
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उत्तर
Power is a scalar quantity.
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संबंधित प्रश्न
A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (see the given figure). Let us take it that the force acts on the object through the displacement. What is the work done in this case?
A force acts on a body and displaces it by a distance S in a direction at an angle θ with the direction of the force. What should be the value of θ to get the maximum positive work?
How is work related to energy?
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It takes 20 s for a person A of mass 50 kg to climb up the stairs, while another person B does the same in 15 s. Compare the work done.
A force of 50 N acts on a body and moves it a distance of 4 m on horizontal surface. Calculate the work done if the direction of force is at an angle of 60° to the horizontal surface.
What is the ratio of SI units to CGS units of 'work'?
What do you understand by the term energy? Is energy a scalar or vector? How is the energy possessed by a body measured?
