The amount of power required to move an object can be increased without changing the
1 answer:
Answer:
Yes it is possible to increase the power with out changing the amount of work.
Explanation:
The power is defined by the amount of power divided by the time. This time is the one needed to do the work. We can understand this issue by analyzing an example with numeric values.
Work = 500 [J]
Time = 5 [s]
Power will be:
Now if we change the time to 2 seconds:
As we can see, the power was increased without the need to change the work.
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Answer:
The electrical energy supplied is 0.233 kWh
Explanation:
Given :
Mass of air kg
Initial temperature 298 K
Final temperature 350 K
Heat loss kJ
From the first law of thermodynamics,
We know that internal energy is proportional to difference of temperature,
Now we need answer into kWh so ( 1 kWh = 3600 kJ ).
So we need to multiply ( )
kWh
kWh
Therefore, the electrical energy supplied 0.233 kWh