Question

33% part (c) Assume that every second, 20% of the kinetic energy of the water wheel is transmitted to the grain mill. Calculate the power (Pw) in watts of the grain mill based on the energy it receives from the water wheel.

a. True
b. False

Answer 1

The power (Pw) of the grain mill is 20% of the kinetic energy (Ke) of the water wheel, assuming Ke is given in joules. To find Pw in watts, multiply Ke by 0.20.

Step-by-step explanation:

To calculate the power (Pw) of the grain mill, given that 20% of the kinetic energy of the water wheel is transmitted to it every second, we will assume we know the kinetic energy Ke of the water wheel. Since power is the rate at which energy is transferred or converted, we can write the equation for power as:

Pw = (20% of Ke) * (1 second)

Converting the percentage into decimal form gives us Pw = 0.20 * Ke. To express it in watts, we need the kinetic energy in joules (since power in watts is joules per second). If we're given Ke of the water wheel in joules, we simply calculate 20% of that value to find power in watts.