Q. If P is the power, W is the work done, E is the energy converted and t is the time taken then, P is defined as

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Q. The rate of work done or rate of energy conversion is known as

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Q. In stairs, each step has a height of 0.25 m and there are 8 steps altogether. If a boy runs up the flight of steps in 4 s and his weight is 390 N, what is his body's power?

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Q. Due to the gas molecules bombarding the walls of the container, the gases can exert

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Q. When a gas is heated and its temperature rises, causing the gas molecules to move at

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Q. The pressure of a fixed mass of gas p is directly proportional to the

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Q. In symbols, where k is the constant, p is the pressure and V is the volume of gas, we can express the pressure of gas as

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Q. In general, pressure of a fixed mass of gas p is inversely proportional to the

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Q. A rectangular block with base area A of 30 cm² and height h of 0.06 m is submerged in water of density 1000 kg m⁻³. What is the pressure due to the water acting on the top surface of the block?

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Q. A rectangular block with base area A of 30 cm² and height h of 0.06 m is submerged in water of density 1000 kg m⁻³. What is the force exerted by the water acting on the top of the block?

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Q. The mechanic is able to apply a smart effort to lift one side of the car for changing tyres with the help of

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Q. A 15 N force exerted on a small piston of area 0.025 m². The large piston has the area of 0.05 m². What is the pressure exerted on the liquid by the small piston?

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Q. If a column of liquid of height is h, base area is A and density is p, then the volume V is given by

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Q. The amount of pressure inside a body of liquid increases with its

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Q. A 15 N force exerted on a small piston of area 0.025 m². The large piston has the area of 0.05 m². What is the force exerted by the large piston on the load?

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Q. (Height of column × density of liquid × gravitational field strength) is equal to

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Q. An enclosed body of liquid is able to transmit pressure that is unchanged to

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Q. The system that helps a car driver to stop the car and to control the speed of the car he is driving is

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Q. A 15 N force exerted on a small piston of area 0.025 m². The large piston has the area of 0.05 m². What is the pressure exerted on the large piston?

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Q. Hydraulic system make use of transmission of pressure to do useful work in

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