Take the derivative to find the velocity of the object:
The object stops when :
so the answer is E.
1. A car begins at a speed of 3 m/s and accelerates at 2 m/s2
1 answer:
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During the phase transition vapour --> liquid water, the temperature of the water does not change; the molecules of water release heat and the amounf of heat released is equal to
where
m is the mass of the water
is the latent heat of evaporation.
For water, the latent heat of evaporation is
, while the mass of the water is
so, the amount of heat released in the process is
where
m is the mass of the water
For water, the latent heat of evaporation is
so, the amount of heat released in the process is