In a practical machine, the power output is _______ the power input.
A. larger than
B. multiplied by
C. equal to
D. smaller than
D?
Good heavens! I have no idea!
The main difference between speed and velocity involves
A. weight.
B. gravity.
C. distance.
D. direction.
D?
efficiency is maximum 100%, and that is impossible.
Output less than input
D is correct
Yes !!!
for speed you need a speedometer
for velocity you need a speedometer AND a compass
speed = scalar
velocity = vector
Yes.. velocity has a direction and speed does not.
also, above the right answer is D.
Thank you guys! :)
Correct, the power output in a practical machine is typically smaller than the power input. This means that option D, "smaller than," is the correct answer.
To understand why the power output is smaller than the power input in a practical machine, we need to consider factors such as friction, heat loss, and inefficiencies in energy conversion. In real-world scenarios, machines are not 100% efficient, meaning that some of the input energy is lost as waste or converted into other forms, such as heat. This results in a reduction of the power output compared to the power input.
To calculate the power output, you would typically need to measure the input power and subtract any losses due to inefficiencies. The specific calculations and measurements required depend on the individual machine and the type of energy being used.