Regarding power, which one of the following is false?
Regarding power, which of the following is false? Select one:
a. Power is measured in watts (W)
b. Power is the rate at which energy is transferred
c. A 60W bulb is more powerful than a 40W bulb
d. Power is measured in joules per second
e. The bigger the cell the more powerful it is

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.