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Physics
UTME / JAMB 2000
Work, Energy and Power
Solution
If the force and the velocity on a system are each reduced simultaneously by half, the power of the system is
A
doubled
B
reduced to a quarter
C
reduced by half
D
constant
medium Difficulty
Study Explanation
Physics
UTME / JAMB 1984
Work, Energy and Power
Solution
A device that converts sound energy into electrical energy is?
A
the horn of a motor car
B
an A.C. generator
C
a microphone
D
the telephone
E
radio waves
medium Difficulty
Study Explanation
Physics
UTME / JAMB 1979
Work, Energy and Power
Solution
A body is released from rest and allowed to fall freely from a given height under gravity. The kinetic energy at its half-way point is?
A
a little above half of its initial energy
B
a little below half of its initial energy
C
a half of its initial energy
D
a little above its initial energy
E
a little below its initial energy
medium Difficulty
Study Explanation