What is one example of refraction

Four discs are spinning at constant angular velocity. Four ideantical balls are dropped on the discs at different distances from the center. The balls are dropped from rest and stick to the disc.

What is the momentum of a 1.5 * 103 kilogram van that is moving at a velocity of 32 meters/second?

Mr. Franklin uses a machine that has an efficiency of 80%. The machine applies a force of 800 N through a distance of 20 m. Mr. Franklin applies a force of 50 N on the machine. Through what distance does Mr. Franklin apply the force? a. 4 m b.

Which statement describes both a positive impact and a negative impact associated with the effects of nitrogen-enhanced fertilizers?

A speeder passes a parked police car at 26.8 m/s. instantaneously, the police car starts from rest with a uniform acceleration of 2.40 m/s2. how much time pases before the speeder is overtaken by the police car? answer in units of s.

How do repeater stations improve the quality of a broadcast?

What is the total number of atoms in the following formula? CaBr2 04

The Amazon River is in Europe. True or False

A microwave oven operating at 120 volts is used to heat a sandwich if the oven draws 12.5 amperes of current for 45 seconds what is the power dissipated by the oven?

Which of the transformers are step-up transformers? Which of the transformers are step-down transformers?