Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
The sagging of overhead electrical cables is the consequence of
linear expansivity
superficial expansivity
cubic expansivity
conductivity
Correct answer is A
No explanation has been provided for this answer.
300N
200N
140N
120N
Correct answer is D
M.A = E×V.R100=40×6100=125
W = M.A x effort
= 125×50=120N
(sin θ)−1
sinθ
(cos θ)−1
cosθ
Correct answer is A
No explanation has been provided for this answer.
1.00 x 102W
3.00 x 104W
9.00 x 104W
3.00 x 105W
Correct answer is C
P = FV
= 3 x 103 x 30
= 9 x 104W