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.
Which of the following explains why a thick glass cup cracks when boiling water is poured into it?
Unequal expansion of the exterior and interior walls of the cup
Anomalous expansion of the water
Greater specific latent capacity of water compared with that of glass
Large increase in the heat capacity of the cup
High density of the water
Correct answer is A
No explanation has been provided for this answer.
1.2x \(10^{-1}cm\)
7.2x\(10^{-1}cm\)
6x\(10^{-1}cm\)
3.6x\(10^{-2}cm\)
1.8x\(10^{-1}cm\)
Correct answer is D
\(\alpha= \frac{\Delta{L}}{L_1\Delta\theta}; \Delta{L}=\alpha{L_1}\Delta\theta\Rightarrow 1.0\times 10^{-5}\times 300\times (40-28)= 0.036 or 3.6\times 10^{-2}\)
0.064N
0.025N
0.016N
0.008N
0.003N
Correct answer is A
Upthrust = Volume of fluid displaced =vpg =0.2 x 0.2 x 0.2 x0.8 x 10= 0.064N
100N
200N
400N
800N
1600N
Correct answer is A
W=\(\frac{mg}{4}= \frac{400}{4}=100N\)
5N 53° east of North
5N 53° west of the south
5N 37° north of east
7N 37° west of North
7N 37° south of west
Correct answer is C
No explanation has been provided for this answer.