00. Work done by Force and Power
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Work, Energy and Power

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.

1 $30 \%$
2 $25 \%$
3 $20 \%$
4 $15 \%$
AMU-2019
Work, Energy and Power

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

1 $300 \mathrm{~J}$
2 $400 \mathrm{~J}$
3 $100 \mathrm{~J}$
4 $200 \mathrm{~J}$
JIPMER-2019
Work, Energy and Power

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

1 $1.3 \mathrm{HP}$
2 $2.3 \mathrm{HP}$
3 $1.05 \mathrm{HP}$
4 $2.05 \mathrm{HP}$
Assam CEE-2019
Work, Energy and Power

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

1 $2 \mathrm{~J}$
2 $-2 \mathrm{~J}$
3 $0.196 \mathrm{~J}$
4 $-0.196 \mathrm{~J}$
TS EAMCET 08.05.2019
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Work, Energy and Power

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.

1 $30 \%$
2 $25 \%$
3 $20 \%$
4 $15 \%$
AMU-2019
Work, Energy and Power

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

1 $300 \mathrm{~J}$
2 $400 \mathrm{~J}$
3 $100 \mathrm{~J}$
4 $200 \mathrm{~J}$
JIPMER-2019
Work, Energy and Power

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

1 $1.3 \mathrm{HP}$
2 $2.3 \mathrm{HP}$
3 $1.05 \mathrm{HP}$
4 $2.05 \mathrm{HP}$
Assam CEE-2019
Work, Energy and Power

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

1 $2 \mathrm{~J}$
2 $-2 \mathrm{~J}$
3 $0.196 \mathrm{~J}$
4 $-0.196 \mathrm{~J}$
TS EAMCET 08.05.2019
NEET DIGITAL LIBRARY
Work, Energy and Power

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.

1 $30 \%$
2 $25 \%$
3 $20 \%$
4 $15 \%$
AMU-2019
Work, Energy and Power

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

1 $300 \mathrm{~J}$
2 $400 \mathrm{~J}$
3 $100 \mathrm{~J}$
4 $200 \mathrm{~J}$
JIPMER-2019
Work, Energy and Power

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

1 $1.3 \mathrm{HP}$
2 $2.3 \mathrm{HP}$
3 $1.05 \mathrm{HP}$
4 $2.05 \mathrm{HP}$
Assam CEE-2019
Work, Energy and Power

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

1 $2 \mathrm{~J}$
2 $-2 \mathrm{~J}$
3 $0.196 \mathrm{~J}$
4 $-0.196 \mathrm{~J}$
TS EAMCET 08.05.2019
Join With Us for More Updates
Work, Energy and Power

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.

1 $30 \%$
2 $25 \%$
3 $20 \%$
4 $15 \%$
AMU-2019
Work, Energy and Power

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

1 $300 \mathrm{~J}$
2 $400 \mathrm{~J}$
3 $100 \mathrm{~J}$
4 $200 \mathrm{~J}$
JIPMER-2019
Work, Energy and Power

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

1 $1.3 \mathrm{HP}$
2 $2.3 \mathrm{HP}$
3 $1.05 \mathrm{HP}$
4 $2.05 \mathrm{HP}$
Assam CEE-2019
Work, Energy and Power

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

1 $2 \mathrm{~J}$
2 $-2 \mathrm{~J}$
3 $0.196 \mathrm{~J}$
4 $-0.196 \mathrm{~J}$
TS EAMCET 08.05.2019
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