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.
9000J
12600J
21000J
25200J
88200J
Correct answer is B
No explanation has been provided for this answer.
1.2 x \(10^{-5}K{-1}\)
2.5x \(10^{-5}K{-1}\)
3.5x \(10^{-5}K{-1}\)
4.5x \(10^{-5}K{-1}\)
5x \(10^{-5}K{-1}\)
Correct answer is E
\(\alpha = \frac{I_2-I_1}{I_1(\theta_2-\theta_1)} \\ \Rightarrow \frac{40.05 - 40}{40 \times (45-20)} = 5.0 \times10^{-5}\)
A body accelerates uniformly from rest at \(2ms^{-2}\). Calculate the velocity after traveling 9m
36\(ms^{-1}\)
18\(ms^{-1}\)
6\(ms^{-1}\)
4.5\(ms^{-1}\)
4.24\(ms^{-1}\)
Correct answer is C
\(V^2= U^2+2as\) =\(0+ 2\times 2ms^{-2}\times 9 =36ms^{-1}\) thus
V=\(\sqrt{36m^2s^{-2}}\) = \(6ms^{-1}\)
21.2\(ms^{-1}\)
30\(ms^{-1}\)
300\(ms^{-1}\)
450\(ms^{-1}\)
900\(ms^{-1}\)
Correct answer is B
\(v^2 = u^2+2as=0^2 + 2\times 10\times 45 \Rightarrow
v^2 = 900m^2s^{-2} \Rightarrow \\
v = \sqrt{900m^2s^{-2}} \Rightarrow
v = 30ms^{-1}\)
0.15A
0.20A
2.10A
3A
6.6A
Correct answer is A
I =\(\frac{E}{R+r} = \frac{1.5}{2.5+0.5+7}\) = 0.15A