SI units for energy and work are
A) Joules and kg
B) Joules and meter
C) Joules and newton
D) Joules
Correct Answer:
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Q6: Average power of all activities of our
Q7: Change in G.P.E can be written as
A)mgh
B)mh
C)mg
D)gh
Q8: Efficiency of car engine is only about
A)10%
B)20%
C)30%
D)80%
Q9: Work is defined as
A)F × S
B)F ×
Q10: Energy transferred to stone of weight 10
Q11: If force of 1 N moves an
Q13: If the ball is thrown upwards, the
Q14: 1 W is equal to {{}}
A)10 J
Q15: Work done by force of gravity on
Q16: A weight-lifter raises weights with a mass
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