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.
What is the decay constant of a radioactive element whose half-life is 3 seconds
0.132s-1
0.23s-1
0.347s-1
0.693s-1
0.924s-1
Correct answer is B
No explanation has been provided for this answer.
65 Ω
18 Ω
16 Ω
14 Ω
12 Ω
Correct answer is E
No explanation has been provided for this answer.
3.6A
3.8A
9.2A
10.0A
13.0A
Correct answer is E
No explanation has been provided for this answer.
20,000J
10,000J
5,000J
4,000J
200J
Correct answer is A
E=I\(^2\)rt
E=5\(^2\) * 8 * 100
E=20000j
Heat Energy Generated(Q) ⇔ Energy(E)
Q = 20000j
The electric potential at point P in the diagram above can be expressed as
Q2/(4πεor2)
Q/(4πεor2)
Q/(4πεor)
Q2/(4πεor2)
Q/(4πεor) 2
Correct answer is C
No explanation has been provided for this answer.