Are the sun's rays mechanical waves or electromagnetic waves

How are commets pushed out of the oort cloud

An object is thrown off a cliff with a horizontal speed of 10 m/sec. After 3 seconds the object hits the ground. Find the height of the cliff and the total horizontal distance traveled by the object. a. What do you know? b.

Zeros are never significant digits true or false

What is heat caused by the movement of?

What must the charge (sign and magnitude) of a particle be for it to remain stationary when placed in a downward-directed electric field of magnitude (b) what is the magnitude of an electric field in which the electric force on a proton is equal in

A rock with mass m = 4.00 kg falls from rest in a viscous medium. The rock is acted on by a net constant downward force of F = 17.

On arrival at a vehicle collision, you observe a small fire in the engine compartment. A bystander is attempting to smother the fire with a jacket as you approach with an A-B-C extinguisher from your ambulance.

Gertrude writes a short story in which the main character must enter a nuclear-powered spaceship's engine room that has lost its shielding in order to prevent the engine from flooding the rest of the ship with radiation.

PV = nRT, is the a. equation of state of an ideal gas b. theorem of equipartition of energy c. second law of thermodynamics

Which conducting electricity has the most harmful effects?