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 do animal-like protists differ from plant-like protists?

I need to know how to solve this problem. it just says perform indicated operation

Explain how a four-term polynomial is factored by grouping and when a quadratic trinomial can be factored using this method. Include examples in your explanatio

In the sterilization area, instruments should move from a/an _______ to a _______ area.

Macbeth contains which supernatural elements? a.wizards and dragons b.ghosts and curses c.blood and death d.angels and demons

Which of these famous books stirred up anti-slavery sentiment in the united states before the civil war?

If BC=45, AB=24, AC=36 Find BD and DC With steps

When might the president ask congress to hold a special session?

Franklin Delano Roosevelt's Infamy Speech December 8, 1941 "Yesterday, December 7, 1941—a date which will live in infamy—the United States of America was sudden

What's the main difference between fiction and nonfiction writting?