The chain reaction used in nuclear power plants involves a free _______ colliding with a _______ , forming more free neutrons an
2 answers:
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Explanation:
760 mmHg (millimeters of mercury) is a measure of atmospheric pressure. It represents the height of a column of mercury at which the static pressure at the bottom is equal to the atmospheric pressure.
1 atm = 760 mmHg = 101,325 Pa = 14.7 psi
Answer:
The work done by the campers is
(b) is correct option.
Explanation:
Given that,
Weight = 5000 N
Frictional force = 300 n
Distance = 1000 m
Constant rate of speed = 0.20 m/s²
We need to calculate the force
Using newton's law of motion
We need to calculate the work done
Using formula of work done
Put the value into the formula
Hence, The work done by the campers is
Answer:
11.23%
Explanation:
Lets take
Speed of man in still water =u= 1.73 m/s
Speed of flow of water = v=0.52 m/s
When swims in downward direction then speed of man = u + v
When swims in upward direction then speed of man = u - v
Lets time taken by man when he swims in downward direction is and when he swims in downward direction is
Lets distance is d and it will be remain constant in both the case
Time taken in still water
2 d= t x 1.73
t=1.15 x d sec
total time in current = 0.82 +0.44 d=1.26 d sec
So the percentage time
Percentage time =11.32%
So it will take 11.32% more time as compare to still current.