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 entomophobia?

What is a unit rate math

What degree is required for being a lawyer ?

how does getting a part-time job affects your social life. List ways

What was the first major military event of the Spanish-American war?

Reflect the triangle over the y-axis and find the coordinate of the image of point K.

please help with french 2

PLEASE HELP ME Which of the following groups was NOT a part of the anti-war movement of the 1950s and 1960s?A. Students for a Democratic Society (SDS)B. Student

Which of the following are examples of the diffusion of Islam? I. Muslim merchants spread Islam to African traders on the trans-Saharan route. II. Medieval Span

Which diagram below best represents the magnetic field near a bar magnet?