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.
1 : 3
15 : 8
7 : 3
3 : 1
Correct answer is C
Heat lost = heat gained
mh x c x (75 - 40) = mc x c x (40 - 25)
\(\frac{m_h}{m_c}\) = \(\frac{35}{15}\)
= \(\frac{7}{3}\)
The amount of heat needed to raise the temperature of 10kg of copper by 1k is its
specific heat capacity
heat capacity
latent heat
internal energy
Correct answer is B
No explanation has been provided for this answer.
The product PV where P is pressure and V is volume has the same unit as
force
power
energy
accelaration
Correct answer is C
PV = \(\frac{N}{m^2}\) x \(\frac{m^3}{1}\)
= Nm
= Force x distance = work done = energy
4.0 x 102kgm-3
4.0 x 103kgm-3
1.0 x 103kgm-3
1.0 x 106kgm-3
Correct answer is B
since the object floats, density of liquid = density of object
converting 500cm3 to m3,
\(\frac{500}{10^{6}} = 5 \times 10^{-4}m^{3}\)
D = \(\frac{m}{v}\)
= \(\frac{2}{5 \times 10^{-4}}\)
=\(4.0 \times 10^{3}kgm^{-3}\)
0.02
0.08
0.20
0.80
Correct answer is B
\(\mu\)mg = ma
\(\mu\)mg = F - ma
\(\mu\) x 10 x 10 = 10 - (10 x 0.2)
100 \(\mu\) =10 - 2
dividing both sides by 100
\(\mu\) = 8 / 100
\(\mu\) = 0.08