A mover brings a box up the stairs in 10 seconds. If he applied a force of 20 N over a distance 10 m on the box, calculate the power required for him to complete this action.

0.05 watts

201 watts

2,000 watts

20 watts

Water enters a house through a pipe with an inside diameter of 2.0cm at an absolute pressure 4.0*10^5 pascal. A 1.0-cm-diameter pipe leads to the second floor bathroom 5.0m above. when the flow speed at the inlet pipe is 1.5m/s.

A figure skater is rotating at a rate of 200 revolutions per minute. What is the angular speed, in units of rad/s? 20.9 12000 200 3.33

The cone cells of the human eye are sensitive to three wavelength ranges, which the eye interprets as blue (419nm), green (531 nm), and red (558nm). if the optic nerve in the eye requires 2.

A car undergoing uniform acceleration travels 100 meters from a standing start in a given period of time. If the time were increased by a factor of four, calculate the displacement.

Given an object's mass and observing its acceleration, what can be found in a direct application of Newton's second law of motion? A. the object's size B. the object's initial velocity C. the net force on the object D.

Which is a chemical change

A 20-N falling object encounters 4 N of air resistance. The magnitude of the net force on the object is?

What is the electrical power when the current is 25 amps and the voltage is 10 volts?

A cyclist rides her bike 7 mi east, and then 2 mi north before taking a break. Then she rides 5 mi east and then 3 mi north. What are the magnitude and direction of the cyclist's resultant displacement? magnitude: 13.0 mi; direction: 22.

What is the low end of the range of surface temperature of white stars