A fan uses 7A when connected to a 110V line. If electric power costs 10 cents per kilowatt-hour in this location, what is the co
1 answer:
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The power that the customers receive is 163.2 MW
Explanation:
The efficiency of a system is given by
where
is the power in output
is the power in input
For the nuclear reactors in this problem, we have:
(power generated by the reactors)
(efficiency is 5.1%)
Therefore, the power that reaches the customers is:
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Answer:
The average acceleration of the car is 2.143 meters per square second.
Explanation:
Let assume that car accelerates uniformly, in that case, we can obtain the value of acceleration by using the following equation of motion:
Where:
- Initial velocity, measured in meters per second.
- Final velocity, measured in meters per second.
- Acceleration, measured in meters per square second.
- Time, measured in seconds.
Now, we clear acceleration within expression:
Initial and final velocities are now converted from kilometers per hour into meters per second:
If we know that , then, the average acceleration of the car is:
The average acceleration of the car is 2.143 meters per square second.