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.
The energy contained in a wire when it extended by 0.02m by a force 500 N is
5J
10J
103J
104
Correct answer is A
Energy = \(\frac{1}{2}\)Fe
= \(\frac{1}{2}\) x 500 x 0.02
E = 5J
i, iii only
i, iv only
ii, iii only
iii, iv only
Correct answer is D
No explanation has been provided for this answer.
\(\frac{mv^2}{t}\)
\(\frac{mv^2}{2t}\)
\(\frac{mv}{t}\)
\(\frac{mv}{2t}\)
Correct answer is A
No explanation has been provided for this answer.
68N
28N
17N
7N
Correct answer is C
No explanation has been provided for this answer.
14 kms-1
13 kms-1
12 kms-1
11 kms-1
Correct answer is D
Velocity = \(\sqrt2gR\)
= 2 x 6400 x 100 x 10
= 11 km-1