Quiet operation of a fan depends mostly upon the

A. motor balance.

B. balance of the blades.

C. weight of the blades.

D. material of the blades

The escalator that leads down into a subway station has a length of 24.5 m and a speed of 2.0 m/s relative to the ground. A student is coming out of the station by running in the wrong direction on this escalator.

Describe a situation where an object would have potential energy transformed into kinetic energy?

Over a span of 6.0 seconds, a car changes its speed from 89 km/h to 37 km/h. What is its average acceleration in meters per second squared (m/s2)

How do you calculate average speed?

A novice skier, starting from rest, slides down a frictionless 36.0 ∘ incline whose vertical height is 185 m. how fast is she going

What is the acceleration of a 10kg pushed by a 5n force

A device that changes thermal energy into mechanical energy

You and your roommate are moving to a city 380 mimi away. Your roommate drives a rental truck at a constant 55 mi/hmi/h, and you drive your car at 65 mi/hmi/h. The two of you begin the trip at the same instant.

Which planet is 92,897,000 miles from the sun?

Stretching or drawing a solid into a wire is which of the following physical properties A) ductility B) solubility C) malleability D) conductivity