Energy that flows from an objective with a higher temperature to an object with a lower temperature
1 answer:
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Answer:
The energy in one kilowatt-hour is
Explanation:
Given that,
Power = 1 kW
Time = 1 hour
One kilowatt-hour (kWh) is the amount of work or energy generated when one kilowatt of power is supplied for a time of one hour
We need to calculate the energy
Using formula of energy
Where, P = power
t = time
Put the value into the formula
Hence, The energy in one kilowatt-hour is
Answer:
Explanation:
means initial angular velocity, which is 0 rev/min
means final angular velocity, which is
t means time t= 3.20 s
one revolution is equivalent to 2πrad so the final angular velocity is:
= (2π/60) *2.513*10^{4} rad/s
= 2628.5 rad/s
so the angular acceleration, α will be:
α = 2628.5 rad/s / 3.20 s
so the rotational motion about a fixed axis is:
+ 2αΔTita where ΔTita is the angle in radians
so now find the ΔTita the subject of the formula
ΔTita =
Hope this helps you.
