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

The san paulo community swimming pool can be filled in 12 hr if water enters through a pipe alone or in 30 hr if water enters through a hose alone. if water is

Signal transduction is part of a cell\'s response to an external signal. although signal transduction pathways can differ in their details, there are some commo

Light acts like? a particle only. both a wave and a particle. a wave only. neither a wave nor a particle.

Which of the following is not a function of Mitosis? A. Produce genetically identical daughter cells B. Growth and development C. Replace damaged cell

A line passes through the points (9,-2) and has a slope of 2/3. Write an equation in point-slope form for this line.

What is the relationship between intimate partner violence (ipv) and marriage?

HELP MEEE RNNNNNNNNNNNNN

A model rocket is launched at an angle of 70° above the x axis, with an initial velocity of 40 m/s. How high will the rocket be 5 seconds after launch? A. 36.

How many communists did mccarthy investigations uncover in the government?

C. X(-4,-3) V(-5,0) E(-2,-1) K(-1,-5) D.X(1,-1) V(0,2) E(3,1) K(4,-3) Geometry math question please help