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.
Which of these statements are TRUE of pressure in liquids?
i. pressure acts equally in all direction.
ii. pressure decreases with depth.
iii. pressure at the same level of a liquid is the same.
iv pressure is dependent on the cross-sectional area of the barometer tube
i, iii only
i, ii, iii only
i, iii, and iv only
i, ii, iii and iv
Correct answer is A
No explanation has been provided for this answer.
Calculate the velocity ratio of a screw jack of pitch 0.3cm if the length of the tommy bar is 21cm
1140π
14π
70π
140π
Correct answer is D
V.R = 2πLp
= 2×π×20.3
V.R = 140π
400.0N
40.0N
4.0N
0.4N
Correct answer is B
F = μmg
= 0.2 x 20 x 10
= 40N
A cone in an unstable equilibrium has its potential energy
decreased
increased
unchanged
oscillating
Correct answer is B
No explanation has been provided for this answer.