Answer:
It is required 1482 Megajoules of energy.
Explanation:
The energy Q required to raise the temperature T1 to a temperature T2 of mass m of water is:
(1)
with c the specific heat of water that is.
We don't have explicit the mass of water containded in the swimming pool, but we can use the relation:
with ρ the density of water that is , V the volume of the swimming pool and m the mass, so m is:
Using c and m on (1):
Answer:
The correct option is (b).
Explanation:
The relation between the wavelength and frequency is given by :
Where
v is the wave speed
f is the frequency of a wave
It is clear from the above equation that the wavelengths and frequency can vary inversely to produce the same wave speed.