Author Question: If a 9.0-V battery, with negligible internal resistance, and an 27-W resistor are connected in ... (Read 83 times)

Haya94 · **on:** Jul 28, 2018

If a 9.0-V battery, with negligible internal resistance, and an 27-W resistor are connected in series, what is the amount of electrical energy transformed to heat per coulomb of charge that flows through the circuit?
a. 0.50 J
c. 3.0 J
b. 9.0 J
d. 72 J

Question 2

A solid sphere of mass 2.5 kg and radius 0.12 m is at rest at the top of a ramp inclined 15. It rolls to the bottom without slipping. The upper end of the ramp is 1.2 m higher than the lower end. Find the sphere's total kinetic energy when it reaches the bottom.
a. 70 J
c. 29 J
b. 47 J
d. 8.8 J