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 viscosity of a fluid depends on the following factors except the?
relative motion between the layers of the fluid
nature of the material of the fluid
surface area of the fluid in contact
normal reaction in the fluid
Correct answer is D
The viscosity of a material is affected by temperature, pressure, nature of fluid, velocity gradient
temperature
mass
specific heat capacity
melting point
Correct answer is D
Internal energy is affected by factors such as pressure, volume, and temperature.
All of the variables in this list are state functions. Mass, volume, pressure, temperature, density, and entropy are all examples of state functions.
1.5 ms\(^{-1}\)
6.0 m s\(^{-1}\)
17.3 m s\(^{-1}\)
24.5 m s\(^{-1}\)
Correct answer is D
v = ?, u = 0, a = 10, s = 30
V² = U²+2as
V² = 0 + 2 * 10 * 30
V² = 0 + 600
V = √600
V = 24.5m/s
rise steadily
fall steadily
fall and then rises
rise and then falls
Correct answer is D
When water is heated, the density rises and falls steadily, remember the anomalous expansion of water.
44.0 m
22.2 m
11.1 m
5.5 m
Correct answer is B
Acceleration[a] = \(\frac{[forward - resistive]force}{mass}\)
a = \(\frac{1240-800}{1220}\) → \(\frac{440-800}{1220}\)
a = 0.36m/s\(^2\), v = 4m/s, s = ?
Second equation of motion:
s is distance
u is initial velocity
v is final velocity
a is acceleration
v\(^2\) = u\(^2\) + 2as
4\(^2\) = 0\(^2\) + 2 * 0.36 * s
16 = 0.72s
22.2m = s