Answer:
Explanation:
Given
initially steam is at
and converted to
ice
Let m be the mass of steam
latent heat of fusion and vaporization for water is


Heat required to convert steam in to water at 

Heat required to lower water temperature to 



Heat required to convert
water to ice at
is





So this energy is equal to kinetic energy of bullet of mass m moving with velocity v




Answer:
decreases
Explanation:
Remeber:
There is always inverse relation between frequency and wavelength.
So if one of them increases, other decreases and vice-versa.
f ∝ 1 / λ
Answer:
160 m
Explanation:
The intensity, I, of the sound is inversely proportional to the square of the distance, r, from the source.

Hence,


From the question,
is half of 



Explanation:
The reading on the scale is
W = m(g + a)
= (77 kg)(9.8 m/s^2 + 2 m/s^2)
= 908.6 N