You don't have any matches, so you want to focus sunlight to ignite a pile of twigs for a campfire. Which mirror would be best to use? A. convex mirror B. concave mirror C. flat mirror D. plane mirror

at the end of a ride up a steep hill Ken was at an elevation of 1600 meters above where he started. he figured out that he and his bicycle had stored 1,000,000 joules of energy. if ken has a mass of 54 kg, what is the mass of kens bicycle

Bob is pulling a 30kg filing cabinet with a force of 200n, but the filing cabinet refuses to move. the coefficient of static friction between the filing cabinet and the floor is 0.80.

Which of the following is the best name for MgCl2

Take a long look at the moon. What evidence do you see that indicates that it is NOT tectonically active Explain.

The pitch of an ambulance siren changes as it approaches you. The pitch also changes as the siren moves away from you. Which is the scientific term for this occurrence?

A dc generator is the same as a (n) a. electric motor. b. ac generator. c. armature. d. electric current.

Which of the following best describes scientific knowledge A.) Durable B.) Absolute and never changing C.) Frequently varies

Beth made the chart shown. A 2-column table with 1 row. The first column labeled X has entries Wall clock, T V remote control, Portable music player. The second column labeled Y has entries Refrigerator, Table lamp, Hair dryer.

Which sentence states Newton's third law? If two objects collide, each object exerts a force in the same direction as the other. If two objects collide, each object exerts a force equal to and in the opposite direction of the other.

Why did the chicken cross the road.