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

Write a complete reaction of succinic acid and acetic anhydride

let f(x)=2x-3 and g(x)= -x^2-1 find ( g o f) (x)

If 52 x equals 7800 y what does 1 x equal? What is the maths equation?

If 52 x equals 7800 y what does 1 x equal? What is the maths equation?

Compute the odds in favor of rolling a sum of 10 in a single roll of two fair dice

What was the South’s greatest concern when California applied for statehood?

When MgCO3(s) is strongly heated, it produces solid MgO as gaseous CO2 is driven off.Does the oxidation number of carbon change upon the formation of CO2?

which of the following expressions does not equal: the sixth root of 81x^4y^8 a. (3xy^2)^2/3 b. (3x)^2/3y^4/3 c. (3x^2y^4)^1/3 d. cube root of 9x^2y^4

f f(x) = 2x2 and g(x) = 3x, what is (g o f)(x) a. 6x2 b. 9x2 c. 18x2 d. 8x4

Two diverging light rays, originating from the same point, have an angle of 5° between them. After the rays reflect from a plane mirror, what is the angle betwe