Old seafloor gets subducted and destroyed where?

A disc-shaped grindstone with mass 50 kg and diameter 0.52m rotates on frictionless bearings at 850 rev/min. An ax is pushed against the rim (to sharpen it) with a normal force of 160 N. The grindstone subsequently comes to rest in 7.5 seconds.

A swallow sitting on a fence sings a song for anyone who will listen what type of energy?

2. ___ On a sunny day, you return to your car after a ball game. The inside of the car is very hot. How did the car get so warm? A conduction B convection C radiation D specific heat

The weight of an object on Earth is determined by A. the mass of Earth. B. the distance of the object from the center of Earth. C. the mass of the object. D. All of the choices.

What would happen if we didnt use units when measuring?

Which describes the relationship between friction and IMA for a simple machine?

What measurement can be used to determine the stability of the atmosphere?

What is the kinetic energy of a 1kg ball that moves at 5m/s

A physics professor demonstrates the Doppler effect by tying a 600 Hz sound generator to a 1.0-m-long rope and whirling it around her head in a horizontal circle at 100 rpm.

What is it called when light shining on certain substances causes an electric current to flow? the polarized light phenomena infrared radiation the photoelectric effect the Einstein conclusion