Author Question: A transformer can only operate if _________. a. the power in equals the power out b. the potential ... (Read 71 times)

evelyn o bentley · **on:** Jul 28, 2018

A transformer can only operate if _________.
a. the power in equals the power out
b. the potential difference is large enough
c. a.c. is used
d. we step up the voltage

Question 2

A car travels along the perimeter of a vertical circle (radius = 0.25 km) at a constant speed of 30 m/s. What is the magnitude of the resultant force on the 60-kg driver of the car at the lowest point on this circular path?
a. 0.37 kN
b. 0.80 kN
c. 0.22 kN
d. 0.59 kN
e. 0.45 kN