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.
30V
70V
50V
40V
Correct answer is D
No explanation has been provided for this answer.
100J
150J
50J
200J
Correct answer is C
From the law of conservation of linear momentum,
\(m_1 u_1 + m_2 u_2 = m_1 v_1 + m_2 v_2\)
Since the collision is inelastic, we have
\((0.05 \times 200) - (0.95 \times 0) = (0.05 + 0.95)V\)
\(10 = V\)
\(V = 10ms^{-1}\)
Hence the Kinetic energy = \(\frac{1}{2} (0.05 + 0.95) \times 10^2\)
= \(\frac{1}{2} \times 100\)
= 50J
16.03cm\(^3\)
15.09cm\(^3\)
16.00cm\(^3\)
15.03cm\(^3\)
Correct answer is B
Volume Expansivity \(\gamma\) = \(3\alpha\)
\(\gamma = 3 \times 2\times10^{-5}\)
\(\gamma = 6\times10^{-5}C^{-1}\)
\(V_{2} = V_{1}(1 + \gamma\theta)\)
\(V_{2} = 15( 1 + (6\times10^{-5}\times(100-0)))\)
\(V_{2} = 15(1.006)\)
= \(15.09cm^{3}\)
One of the features of the fission process is that
it leads to chain reaction
its products are not radioactive
neutrons are not released
the of the masses of the reactants equals the sum of the masses of the products
Correct answer is A
No explanation has been provided for this answer.
The pitch of an acoustic device can be increased by
decreasing the loudness
increasing the intensity
increasing the frequency
decreasing the intensity
Correct answer is C
No explanation has been provided for this answer.