4. How does density affect refraction of a lightwave?

A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 16.0 m. she pushes in a direction 30.0° below the horizontal. a 54.0-n frictional force opposes the motion of the cart.

What is the mass of a dog that weighs 382 N? (unit=kg)

In an 8.00 km race, one runner runs at a steady 11.1 km/h and another runs at 14.0 km/h. How far from the finish line is the slower runner when the faster runner finishes the race?

Which steps are in the proper order for survival floating. a. surface, rest, sink, breathe b. rest, sink, breathe, surface c. rest, surface, breathe, rest d. sink, breathe, surface, rest

An eagle is flying due east, in level flight, at a speed of 8.9 m/s while carrying a gopher in its talons. The gopher manages to break free at a height of 12 m above the ground.

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?