Hello, I need some help with these 2 homework problems. Watts / 1000 = Kilowatts You can calculate kilowatt-hours using this formula: Kilowatts x Time in Hours = Kilowatt-hours Use these formulas to determine the cost of each of these appliances of devices over a given period of time. Assume $0.20 per kWh utility cost   5. You decide to relax for the night by playing video games on your Playstation 3. You lose track of time and end up playing for 3 hours. The PS3 uses 197 watts/hour. You have an expensive plasma TV that uses 339 watts/hour. ________________________________________________________________________________ 6. Before going to bed for the night, you realize that you accidentally left the kitchen lights on all day (12 hours). The lighting fixtures in the kitchen have a total of 4 incandescent bulbs, each of which uses 75watts/hour.

Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter33: Alternating Current Circuits
Section: Chapter Questions
Problem 33.6CQ: As shown in Figure CQ33.6, a person pulls a vacuum cleaner at speed v across a horizontal floor,...
icon
Related questions
icon
Concept explainers
Topic Video
Question

Hello, I need some help with these 2 homework problems.

Watts / 1000 = Kilowatts

You can calculate kilowatt-hours using this formula:
Kilowatts x Time in Hours = Kilowatt-hours

Use these formulas to determine the cost of each of these appliances of devices over a given period of time.
Assume $0.20 per kWh utility cost

 

5. You decide to relax for the night by playing video games on your Playstation 3. You lose track of time and end up playing for 3 hours. The PS3 uses 197 watts/hour. You have an expensive plasma TV that
uses 339 watts/hour.
________________________________________________________________________________


6. Before going to bed for the night, you realize that you accidentally left the kitchen lights on all day (12
hours). The lighting fixtures in the kitchen have a total of 4 incandescent bulbs, each of which uses 75watts/hour.

________________________________________________________________________________

Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Kinetic energy
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Physics for Scientists and Engineers, Technology …
Physics for Scientists and Engineers, Technology …
Physics
ISBN:
9781305116399
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Physics for Scientists and Engineers with Modern …
Physics for Scientists and Engineers with Modern …
Physics
ISBN:
9781337553292
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
An Introduction to Physical Science
An Introduction to Physical Science
Physics
ISBN:
9781305079137
Author:
James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:
Cengage Learning
University Physics Volume 2
University Physics Volume 2
Physics
ISBN:
9781938168161
Author:
OpenStax
Publisher:
OpenStax
College Physics
College Physics
Physics
ISBN:
9781938168000
Author:
Paul Peter Urone, Roger Hinrichs
Publisher:
OpenStax College