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.
200g
320g
400g
500g
Correct answer is D
Heat lost by hot water = Heat gained by cold water
M x 4200 x (100 - 60 = 0.4 x 4200 x (60 - 10)
4200m x 40 = 0.4 x 4200 x 50
40m = 0.4 x 50
m = \(\frac{0.4 \times 50}{40}\) = 0.5kg
= 500g
22.2N
38.0N
67.0N
75.0N
Correct answer is A
Given; VR = 6, e = 75%, MA = ?
e = \(\frac{\text{MA}}{\text{VR}} \times \frac{100}{1}\)
MA =\(\frac{75 \times 6}{10}\)
MA = \(\frac{9}{2}\)
MA = \(\frac{L}{E} = \frac{100}{E}\)
\(\frac{9}{2} = \frac{100}{E}\)
9E = 100
E = \(\frac{200}{9}\)
= 22.2N
Water is unsuitable for use as a thermometric liquid because it
expands unevenly between 0oC and 40oC
has narrow temperature range
has a concave meniscus
msintsin s fixed density
Correct answer is A
No explanation has been provided for this answer.
thermal equilibrium of the sheets
conduction of heat by the sheets
contraction of the sheets
expansion of the sheets
Correct answer is D
No explanation has been provided for this answer.
10J
103J
104J
105J
Correct answer is D
Ke = mgh
Ke = Pe
\(\frac{1}{2}\)MV2 = mgh
Ke = 1000 x 10 x 10
Ke = 100000J
Ke = 105J