Answered

Welcome to Westonci.ca, where you can find answers to all your questions from a community of experienced professionals. Discover a wealth of knowledge from experts across different disciplines on our comprehensive Q&A platform. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.

Danielle is doing some diy. she uses a 1.2kw electric saw for 20 minutes and then a 1000w electric sander for half an hour. which job is the more expensive in terms of electricity used - sawing or sanding?

Sagot :

Lanuel

Based on the calculations, the electric sander (sanding) is the more expensive in terms of electricity used.

How to determine the more expensive?

Mathematically, the quantity of energy consumed by an electrical device can be calculated by using this formula:

Energy consumption = power × time

For the electric saw, we have:

  • Power = 1.2 kW = 1.2 × 1000 = 1,200 Watts.
  • Time = 20 minutes.

Substituting the given parameters into the formula, we have;

Energy consumption = 1,200 × 20

Energy consumption = 24,000 Joules.

For the electric sander, we have:

  • Power = 1000 Watts.
  • Time = half-hour = 30 minutes.

Substituting the given parameters into the formula, we have;

Energy consumption = 1,000 × 30

Energy consumption = 30,000 Joules.

Therefore, the electric sander (sanding) is the more expensive in terms of electricity used.

Read more on energy consumption here: https://brainly.com/question/6572692

#SPJ1

Thanks for stopping by. We are committed to providing the best answers for all your questions. See you again soon. Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. Find reliable answers at Westonci.ca. Visit us again for the latest updates and expert advice.