a ball is shot from the ground straight up into the air with initial velocity of 50 50 ft/sec. assuming that the air resistance
1 answer:
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Answer:
Explanation:
Given charges are:
The electric potential energy of a charge due to the electric field of another charge is given by
where,
- k = Coulomb's constant, having value =
- r = distance between the charges.
When the charges are infinite distance apart, ,
When the charges are apart,
,
Here, e is the charge on one electron, such that, .
Therefore,
Thus,
Answer:
It will take 20,000 seconds to get a pressure of 200Pa at the bottom of the tank.
Explanation:
The pressure at the bottom of the tank will be
where is the mass of the water, and
is the base area of the tank.
The base area of the tank is
,
and if we want the pressure at the bottom to be 200pa, then it must be that
,
solving for we get:
which is the required mass of the water in the tank.
Now, the tank fills at a rate of 2 drops per second or
since each drop weights 0.05g.
Therefore, the time it takes to collect 20kg of water will be
which is 55.56 hours or 2 days and 7.56 hours.
Thus, it will take 20,000 seconds to get a pressure of 200Pa at the bottom of the tank.