This topic contains a solution. Click here to go to the answer
« previous next »

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 87 times)

natalie2426

  • Hero Member
  • *****
  • Posts: 524
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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mcomstock09

  • Sr. Member
  • ****
  • Posts: 377
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

A


natalie2426

  • Member
  • Posts: 524
Reply 2 on: Jul 28, 2018
Gracias!

sailorcrescent

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Vertical structuring of the oceans is associated with substantial variation in light and temperature Vertical structuring of the oceans is associated with substantial variation in light and temperature
The environmental policy changes over time The environmental policy changes over time
Solar energy heats the atmosphere, creates seasons, and causes air to circulate Solar energy heats the atmosphere, creates seasons, and causes air to circulate
Blunt percussion over the left costovertebral angle Blunt percussion over the left costovertebral angle
Embryonic Period - lacunae Embryonic Period - lacunae
Consider a two-period economy with no investment opportunities: first and second period output ... Consider a two-period economy with no investment opportunities: first and second period output ...
Video: Exercise and cardiac output

For a complete list of videos, visit our video library