I know that 4. Is wave 2 and 5. Is wave 3.
The velocity of sound in at 300C is 511.3 m/s.
Explanation:
The equation that gives the speed of sound in ar as a function of the air temperature is the following:

where
T is the temperature of the air, measured in Celsius degrees
In this problem, we want to find the speed of sound in ar for a temperature of

Substituting into the equation, we find:

So, the velocity of sound in at 300C is 511.3 m/s.
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Its during REM sleep. hope this helped
Power = (voltage) x (current)
Power = (240 volts) x (4 Amp)
Power = 960 watts