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 small droplets of water that form on the grass in the early hours of the morning is
Fog
Haul
Mist
Dew
Correct answer is D
No explanation has been provided for this answer.
A force of 500N1 is applied to a steel wire of cross-sectional area 0.2m2, The tensile stress is
2.5x104Nm-2
1.0x102Nm-2
1.0x103Nm-2
2.5x103Nm-2
Correct answer is D
\(Stress = \frac{Force}{Area}\)
\(Stress = \frac{500}{0.2} = 2500\)
= 2.5 x 103Nm-3
90%
80%
85%
87%
Correct answer is B
VR = 800/200 = 4
\(Efficiency = \frac{MA}{VR} \times \frac{100}{1}\)
\(Efficiency = \frac{L}{E} \times \frac{1}{VR} \times \frac{100}{1}\)
\(Efficiency = \frac{800}{250} \times \frac{1}{4} \times \frac{100}{1}\)
= 78.74%
= 80%
343.32N
233.33N
333.33N
334.33N
Correct answer is C
\(\frac{MA}{VR}\times\frac{100}{1}=efficiency\)
\(\frac{L}{E}\frac{1}{VR}\times\frac{100}{1}=75\)
\(\frac{1000}{E}\frac{1}{4}\times\frac{100}{1}=75\)
\(E = \frac{250 \times 100}{75}\)
E = 333.3N
The energy in the nucleus of atoms produce heat which can be used to generate
Kinetic energy
Mechanical energy
Electrical energy
Potential energy
Correct answer is A
No explanation has been provided for this answer.