During the water cycle some of the water In the oceans as fresh water bodies such as lake and rivers is warmed by the sun and evaporated during the process of evaporation Impurities in the water are left behind but the water that goes into the atmosphere is cleaner than it was on earth hope this helps
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Answer:
a) 3.6 N.s
b) 36 J
Explanation:
Given:
The mass of ball, m = 0.06 kg
The initial velocity v₁ = -20 m/s
final velocity v₂ = 40 m/s
Now,
The impulse is given as:
I= change in momentum
or
I = m( v₂ - v₁)
or
I = 0.06 × (40 - (-20))
or
I = 3.6 N.s
(b) work done = change in kinetic energy
W.D = ΔK.E
W.D =
on substituting the values
W.D =
W.D = 36 J
Answer:
The instrument is thermometer