jenniferlackey717 jenniferlackey717

02-04-2020
Physics

contestada

What is the power when a crane lifts a piece of pipe from the ground to a certain height, doing 15000 J of work in 25s?
A) 375000 W

B) 600 W

C) 100 W

D) 350 W

Respuesta :

olatunbosunadeoke olatunbosunadeoke

02-04-2020

Answer: Option B) 600 W

Explanation:

Since power is the rate of work done per unit time

i.e Power = work/time

Given that:

power of a crane = ?

work done by crane = 15000 J

Time = 25 seconds

Power = 15000J / 25s

Power = 600 watts

Answer Link

Otras preguntas

Of the following states of matter, plasma most closely resembles a. a gas. b. a solid. c. a liquid. d. a mixture.

A cell that is relatively large, houses its DNA in a membrane-bound structure, has chloroplasts, and contains protein fibers that hold all of the organelles in

After the War of 1812, European countries came to have greater for America.

During the High Middle Ages, how did pilgrimages for the Crusades affect the economy?

simplify 8 2(10 – r). a. –2r – 9 b. 7r – 18 c. 28 – 2r d. –2r – 18

What change did the mexican revolution bring about in 1910?

250% of what number is 127.5?

what areas of the world did the romans take over??

what is the comparative form of the adjective extraordinary?

Which of the following statements best explains the religions practiced by the settlers of New France and New England?