Two cars have collided head on. one car was traveling at a speed of 55 mph and the other at 35 mph the total speed of impact would be

Which lunar phase follows a waxing crescent phase? a. full b. new c. first quarter d. third quarter

A material having a refractive index of 1.25 is used to coat a piece of glass (n=1.55). what should be the minimum thickness of this film to minimize reflection of 550nm light.

An unlit match is held near (not touching) a Bunsen flame. The match doesn't get hot enough to light because a. the flame is not hot enough b. air is a bad conductor of heat c. the matchhead reflects radiation d.

What is the rule of calculation of elastic potential energy?

Which of the following would not be a good fuse design? low-melt wire encased in glass low-melt wire encased in ceramic low-melt wire encased in iron low-melt wire encased in a tube of air

You are watching children play a game of tug-o-war with an old plastic clothesline. The two teams are pulling at opposite ends of the cord and each team is trying to drag the other team into a mud puddle that lies between them.

What is the rate at which electrical energy is converted to another form of energy called?

A person gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. The cart travels forward along the floor, gradually slowing as it moves.

A driver, traveling at 22.0 m/s, slows down her 2.00 x 103 kg car to stop for a red light. What work is done by the friction force against the wheels?

If the masses of an object increase and their distance from each other stays the same the force of gravity decreases increases stays the same increases then decreases