madisong57 madisong57

03-03-2016
Physics

contestada

A 49 Newton rock is lifted 2 meters in 5 seconds.
How much work is done?
What power is used?

Respuesta :

olemakpadu olemakpadu

03-03-2016

Work done is potential energy = mgh

mg = weight of the stone = 49 N

h = 5 m

Work done = (mg)h = 49 * 5 = 245 Joules.

Power = Work done / Time taken

= 245 / 5 = 49 Watts.

Answer Link

Otras preguntas

how are elements and compounds alike

A square patio has an area of 200 square feet. How long is each side of the patio to the nearest tenth?

15 is 25% of what number

How does a universal genetic code relate to the hypotheses about the origin of life on Earth?

How long did the Zhou dynasty rule?

2x+5y=15 in slope intercept form

Round 125,458 to the nearest hundred thousand

a football team gained 9 yards on one play and then lost 22 yards on the next .write a sum of integers to find the overall change in field position explain your

An old house in Boxerville measures 30 feet in height and has windows 5 feet width. An architecture student builds a proportional model that is 3 feet high. How

Why might the iodine change color when it combines with starch?