For a two-level system, the weight of a given energy distribution can be expressed in terms of the number of systems, N, and the
1 answer:
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Distance , d = a+b
The unit of d is in meter and t is in seconds.
So the unit of a a must be meter.
Now we have unit of b is meter.
So unit of b*
= meter
Unit of b = meter/
So unit of a = m and unit of b = m/
.
The unit of d is in meter and t is in seconds.
So the unit of a a must be meter.
Now we have unit of b
So unit of b*
Unit of b = meter/
So unit of a = m and unit of b = m/
Answer:
80%
Explanation:
Efficiency = Power output / Power input × 100 %
To calculate efficiency we need to find power output of electric pump.
We can use,
Work done = Energy change
Work done per second = Energy change per second
Work done per second = Power
Therefore, Power = Energy change per second
= Change in potential energy of water per second
=mgh / t
= 200× 10×6 / 10
= 1200 W = 1.2 kW
Now use the first equation to find efficiency,
Efficiency = × 100%
= 80 %