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

what is allostasis characterized by

I need help with questions 6 and 7

If you were to explain Slavery today, how would you explain it?

please help me with this and explain it to me, thank you!

People are likely to detect male prejudice against females ________ easily than they detect female prejudice against males. they are likely to detect younger pe

What requires the speaker to be brief and avoid ambiguity? A.) Manner B.) Relevance C.) Quantity D.) Quality

Las piramides de keops, Kefrén y Micerino cumplían la funcion de :

What was FRANCISCO VAZQUEZ DE CORONADO Significant?

What was the relationship between hitler and Stalin during world war 2

During track practice, Britney ran 2 miles and sprinted 3,200 feet. In total, how many feet did she travel during practice?