528m
66m
136m
264m
Correct answer is C
Time for echo both ways = 0.8
Therefore time for echo in 1 way = 0.8/2 = 0.4
Distance = Speed x time
Distance = 340 x 0.4
Distance = 136m
2.0x102Hz
4.5x103Hz
2.0x103Hz
4.5x102Hz
Correct answer is C
Wavelength = 15cm = 0.15m
Velocity = 300m/s
V = fx
F = V/Wavelength
F = 300/0.15 Hertz
F = 2 x 103Hz
The temperature at which the water vapour present in the air is just sufficient to saturate air is
Boiling point
Ice point
Saturation point
Dew point
Correct answer is D
No explanation has been provided for this answer.
The melting point of a substance is equivalent to its
Vapour Pressure
Solidification Temperature
Liquidification Temperature
Solidification Pressures
Correct answer is B
No explanation has been provided for this answer.
The quantity of heat needed to raise the temperature of a body by 1K is the body's
Heat capacity
Internal energy
Specific heat capacity
Latent heat of fusion
Correct answer is A
No explanation has been provided for this answer.