A500-kg elevator is raised to a height of 10 m in 10 seconds. calculate the power of the motor.

Power = 4905 W

Explanation:

Power is defined as the rate of work done against the forces acting on the system

here we know that

mass of elevator = 500 m

is moves up against gravity by distance = 10 m

total time taken by it to move = 10 s

so work done against gravity is given as

now power given by motor is given as

true tan speed = ang vel x radius

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.