work power energy

Work doune = force × ………
distance
accelration
velocity
speed
A work of 50 Nm is done. How much j does it amount to ?
50 J
430 J
51 J
500 J
calculate the work done in lifting 300 kg of water by 4 metere (suppose g= 10 m/ sec ² )
w= 12025 joule
w= 12000 joule
w= 12050 joule
w= 12100 joule
A coclie carries a losd of 500N to a distance of 100 m The work done by him is ….
5N
50,000 Nm
1/5 N
0
The absolute unit of power is watt. One watt is that power which is required to perform ….
1 joule / second
1 joule / minute
1 Kg /minut
1joule
The actual powe generated in the engine cylinder is called ……
Brake hource powe
mechanical efficiency
frictional hource horse power
Indicated hourse power
Which symol used to indicate the efficiency ?
Ώ
μ
η
ρ
The type of energy possessed by a simple pendulam when it is at the mean position is …
potential energy + kinetic energy
sound energy
potential energy
Kinetic energy
When the body is allowed to fall it will be able to do a useful work then the body possess…..
conservation energy
mechanical energy
kinetic energy
potential energy
A 40 newton object is released from a height of 10 m . Just before it hits the ground its kinetic energy in joules is ….
3920
4000
2800
400
0
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