Answer:
it transfers heat to the hair to make it dry with the hot air which would be thermal energy
Answer:
The wavelength of the wave is tripled this can be done by reducing the frequency of the wave by factor of three.
Explanation :
The relation between the wavelength & frequency of a wave is given by
C = ν λ
Where
C - it is the velocity of light in vacuum.
ν - frequency of the wave.
λ - wavelength of the wave.
So we find that wavelength of a wave varies inversely with the frequency of a wave i.e. ν ∝ 1/λ.
Hertz is a measurement of the frequency that a wave is occurring.
Answer:
250 m/min down the road
Explanation:
Velocity is equivalent to speed but it considers the direction of the object. Velocity is also calculated by dividing the distance travelled by time. Therefore, 
where d and t are distance and time respectively. Given that d is given as 350 m and t is 1.4 s then by substitution 
and the direction is down the road.
Velocity is 250 m/min down the road
The relationship between the frequency and wavelength of a wave is given by the equation:
v=λf, where v is the velocity of the wave, λ is the wavelength and f is the frequency.
If we divide the equation by f we get:
λ=v/f
From here we see that the wavelength and frequency are inversely proportional. So as the frequency increases the wavelength decreases.
So the second statement is true: As the frequency of a wave increases, the shorter the wavelength is.
