148782 A steam engine delivers $5.4 \times 10^{8} \mathrm{~J}$ of work per minute and absorbs $3.6 \times 10^{9} \mathrm{~J}$ of heat per minute from the boiler of the engine. Calculate the efficiency of the engine.

148783 A man applying force of $20 \mathrm{~N}$ on an object at an angle of $60^{\circ}$ from the horizontal. If object moved by $20 \mathrm{~m}$ in horizontal direction, then work done by the force on the object is

148784 A lift weighing $500 \mathrm{~kg}$ is to be lifted up at a constant velocity of $0.20 \mathrm{~m} / \mathrm{s}$. The minimum horse power of the motor to be used is

148785 A particle of mass $10 \mathrm{~g}$ is thrown vertically upwards with a speed of $20 \mathrm{~ms}^{-1}$. The work done by the gravitational force during the time the particle moves upward is

148782 A steam engine delivers $5.4 \times 10^{8} \mathrm{~J}$ of work per minute and absorbs $3.6 \times 10^{9} \mathrm{~J}$ of heat per minute from the boiler of the engine. Calculate the efficiency of the engine.

148783 A man applying force of $20 \mathrm{~N}$ on an object at an angle of $60^{\circ}$ from the horizontal. If object moved by $20 \mathrm{~m}$ in horizontal direction, then work done by the force on the object is

148784 A lift weighing $500 \mathrm{~kg}$ is to be lifted up at a constant velocity of $0.20 \mathrm{~m} / \mathrm{s}$. The minimum horse power of the motor to be used is

148785 A particle of mass $10 \mathrm{~g}$ is thrown vertically upwards with a speed of $20 \mathrm{~ms}^{-1}$. The work done by the gravitational force during the time the particle moves upward is

148782 A steam engine delivers $5.4 \times 10^{8} \mathrm{~J}$ of work per minute and absorbs $3.6 \times 10^{9} \mathrm{~J}$ of heat per minute from the boiler of the engine. Calculate the efficiency of the engine.

148783 A man applying force of $20 \mathrm{~N}$ on an object at an angle of $60^{\circ}$ from the horizontal. If object moved by $20 \mathrm{~m}$ in horizontal direction, then work done by the force on the object is

148784 A lift weighing $500 \mathrm{~kg}$ is to be lifted up at a constant velocity of $0.20 \mathrm{~m} / \mathrm{s}$. The minimum horse power of the motor to be used is

148785 A particle of mass $10 \mathrm{~g}$ is thrown vertically upwards with a speed of $20 \mathrm{~ms}^{-1}$. The work done by the gravitational force during the time the particle moves upward is

148782 A steam engine delivers $5.4 \times 10^{8} \mathrm{~J}$ of work per minute and absorbs $3.6 \times 10^{9} \mathrm{~J}$ of heat per minute from the boiler of the engine. Calculate the efficiency of the engine.

148783 A man applying force of $20 \mathrm{~N}$ on an object at an angle of $60^{\circ}$ from the horizontal. If object moved by $20 \mathrm{~m}$ in horizontal direction, then work done by the force on the object is

148784 A lift weighing $500 \mathrm{~kg}$ is to be lifted up at a constant velocity of $0.20 \mathrm{~m} / \mathrm{s}$. The minimum horse power of the motor to be used is

148785 A particle of mass $10 \mathrm{~g}$ is thrown vertically upwards with a speed of $20 \mathrm{~ms}^{-1}$. The work done by the gravitational force during the time the particle moves upward is