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.
2500N
2000N
900N
625N
Correct answer is B
M.A = \(\frac{Eff \times V.r}{100} = \frac{80 \times 5}{100} = 4\)
Load = effort x M.A
= 4 x 500 = 2000N
64.0J
80.0J
128.0J
160.0J
Correct answer is A
E = \(\frac{1}{2}Ke^2\)
= \(\frac{1}{2} \times 200(0.8)^2 = 64J\)
i and ii only
ii and iii only
i and iii only
i, ii and iii
Correct answer is D
No explanation has been provided for this answer.
increased the surface tension of the water
reduces the density of the water
reduces the surface tension of the water
reduces the upthrust on the needle
Correct answer is C
No explanation has been provided for this answer.
6.20 x 104 pa
1.02 x 105 pa
1.54 x 105 pa
5.20 x 105 pa
Correct answer is C
P = hpg + A.P
= 5.2 x 1000 x 10 + 1.02 x 105
= 1.54 x 105