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Author Question: A 100-W light bulb is left on for 20.0 hours. Over this period of time, how much energy did the bulb ... (Read 92 times)

natalie2426

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on: Jul 28, 2018
A 100-W light bulb is left on for 20.0 hours. Over this period of time, how much energy did the bulb use?
 a. 1000 J
  c. 3,600,000 J
  b. 7.2 MJ
  d. 1.34 hp

Question 2

In a thundercloud there may be an electric charge of +40 C near the top of the cloud and -40 C near the bottom of the cloud. These charges are separated by about 2.0 km. What is the electric force between these two sets of charges? (ke = 8.99  109 Nm2/C2)
 a. 3.6  106 N
  c. 3.6  107 N
  b. 3.6  104 N
  d. 3.6  105 N


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mcomstock09

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

B

Answer to Question 2

A


natalie2426

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Reply 2 on: Jul 28, 2018
Excellent

gcook

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Reply 3 on: Yesterday
Gracias!

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