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Author Question: If a 9.0-V battery, with negligible internal resistance, and an 27-W resistor are connected in ... (Read 137 times)

Haya94

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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


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tdewitt

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Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

C


Haya94

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

scottmt

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Reply 3 on: Yesterday
Gracias!

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