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

Multiply and simplify: 10x(9x2 + 6x + 7)

which one could be real

bob has 36 candy bars he eats 29 what does he have

You type the word "weather" when you meant to type "whether". When will Microsoft Writer or Microsoft Word flag this as a misspelling or a grammar problem? A. A

Who were the people living in southeastern Britain when the Angles and the Saxons invaded the area

___________ means problem identification under s. a.r. a. a. searching b. scanning c. scrutinizing d. none of the above

why are basic facts needed when dividing large numbers?

The maximum pressure achieved during ventricular contraction is called

A biologist wants to determine the effect of a new fertilizer on tomato plants. What would be the treatment? A. Tomatoes B. Plants C. Fertilizer D. Plant gr

What are the names of the two factions of the wayuu people? a.) wayuu and zulia b.) la guajira and uribia c.) zulia and la guajira d.) uribia and wayuu