The specific latent heat of fusion of lead is the amount of heat required to
melt lead at its melting point
heat a unit mass of lead through 1oC
change the state of a unit mass of lead at its melting point
change the state of a unit mass of lead at its boiling point
Correct answer is C
No explanation has been provided for this answer.
The mode of heat transfer which does not require a material medium is
conduction
radiation
convection
propagation
Correct answer is B
No explanation has been provided for this answer.
1.0N
10.0N
9000.0N
11 000N
Correct answer is C
No explanation has been provided for this answer.
1.4 x 102N
24 x 104N
2.0 x 104N
1.7 x 103N
Correct answer is B
Volume = 2 x 4 x 3 = 24m3
mass = V x D = 24 x 103
F = mg
= 24 x 103 x 10
= 24 x 104
0.4N
100.0N
250.0N
1000.0N
Correct answer is B
F = ma and V2 = U2 + 2aX
F = m\(\frac{(V^2 - U^2)}{2X}\)
= 0.04\(\frac{(500^2 - 0^2)}{2 \times 50}\)
F = 100N