Williamsburg20030325 Williamsburg20030325

15-02-2017
Physics

contestada

Suppose a vacuum cleaner uses 120 J of electrical energy. If 45 J are used to pull air into the vacuum cleaner, how efficient is the vacuum cleaner.

Respuesta :

LilacMoon101 LilacMoon101

15-02-2017

I believe that if you multiply 120 x 45 you would get 5,400 why? Because when a problem has "of" means to multiply.

So... the vacuum cleaner is 5,400 percent efficient :)

Sorry if it's wrong I'm only in fifth grade

Answer Link

Otras preguntas

May you please solve my equation 6e+2+82=180

8a + 16c. What is the value of the expression when a = –5 and c = –1? Enter your answer in the box.

simplify [tex]\sqrt{-90

(100 points on this) The box is laid on its side and the white label covers 60% of the lateral surface area of the box. Find the length of the box.

A student reads that propane gas is the main source of energy for outdoor grills. Propane gas is made up of carbon and hydrogen atoms. Propane has stored ____ e

Can you write me a summary for the last book in the universe

Is (2,4) a solution to this system of equations? y=6x–8 y=3x 2

simplify [tex]\sqrt{-90

Solve. A man bought an item for 5000 and sold it at a loss of 25%. How much did he sell it?

Write a 5 paragraph essay about why u think Oreo are better than Chip Ahoy. hook the reader then at the end make a thesis statement.