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.
Steam from boiling water causes more damage on the skin than does boiling water because
water has a high specific heat
steam has latent heat of fusion
the steam is at a highter temperature than the water
steam brings heat more easily by convection
Correct answer is D
No explanation has been provided for this answer.
2:1
1:2
4:1
1:4
Correct answer is B
MC\(x_\theta\) = MC\(y_\theta\)
\(x_\theta\) = 2 \(\times y_\theta\)
MC(2\(y_\theta\)) = MC\(y_\theta\)
⇒ 2C = C
=1 : 2
A gas at a pressure of 105Nm-2expands from 0.6m-3 to 1.2m3 at constant temperature, the work done is
7.0 x 106J
6.0 x 10 6J
6.0 x 10 5J
6.0 x 10 4J
Correct answer is D
W = \(\frac{W_1 \times V_1}{V_2}\)
W = \(\frac{10 \times 0.6}{1.2}\)
W = 6.0 x 10 4J
100.08m
100.04m
99.96m
99.92m
Correct answer is D
\(L_2 = L_1 + \alpha(\theta_2 - \theta_1)\)
= 100 + 0.00002(-10-30) = 99.92
0.8m3
1.4m3
3.6m3
49.m3
Correct answer is C
Mp = ep x Vp
Mp = 7.2 x 102 x 4.2 = 3024
VA = \(\frac{M}{e_A}\)
VA = \(\frac{3024}{8.4 \times 10^2}\)
VA = 3.6