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

Author Question: How much energy does a 100 watt light bulb use in 1 hour? Express your answer in (a) joules and in ... (Read 110 times)

Marty

  • Hero Member
  • *****
  • Posts: 553
on: Jul 28, 2018
How much energy does a 100 watt light bulb use in 1 hour? Express your answer in (a) joules and in (b) kilowatt-hours. (c) Also find how much money it costs if electricity sells for 10 cents per kW-h.

Question 2

The light bulb used in a slide projector draws a current of 4 amperes when operating on 120 volts. (a) What is the bulb's resistance? (b) What is the bulb's power consumption?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

daiying98

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Jul 28, 2018
Answer to Question 1

(a) 360,000 J, (b) 0.1 kW-h, (c)1 cent

Answer to Question 2

(a) 5 amperes, (b) 2.4 ohms


Marty

  • Hero Member
  • *****
  • Posts: 553
Reply #2 on: Jul 28, 2018
Thank you!


daiying98

  • Sr. Member
  • ****
  • Posts: 354
Reply #3 on: Jul 28, 2018
Always glad to help...


« previous next »
 

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Chris Burden, Urban Light. Chris Burden, Urban Light.
Metabolic pathways involved in lipolysis, the breakdown of fats (triglycerides) for energy. Metabolic pathways involved in lipolysis, the breakdown of fats (triglycerides) for energy.
Endocrine regulation of food intake and energy homeostasis in mammals Endocrine regulation of food intake and energy homeostasis in mammals
Global energy consumption is rising rapidly Global energy consumption is rising rapidly
ODDS AND PROBABILITY 4 QUESTIONS I NEED IT TPDAY PLEASE ANSWER ALL ODDS AND PROBABILITY 4 QUESTIONS I NEED IT TPDAY PLEASE ANSWER ALL
Answer Answer
Video: Insulin (glucose uptake by body cells), glycogenesis and lipogenesis

For a complete list of videos, visit our video library