A new silencing device for domestic appliances operates by producing sound waves that cancel out the sound waves prod...

jing jing on August 28, 2022

Why not e?

Thanks

Replies
Create a free account to read and take part in forum discussions.

Already have an account? log in

Emil on August 29, 2022

Hi Jing Jing,

The thing that we need to explain is the fact that vacuums with this new device will need to consume less energy. E tells us that all silencers in vacuums make them heavier than they would otherwise be. I don't think there is any connection between the weight/mobility of a vacuum and its power needs.

jing jing on September 3, 2022

Thanks