Which of the following forces is responsible for keeping the planets in orbit around the Sun?

A.

magnetism

B.

gravity

C.

friction

D.

electromagnetic force

A juggler throws a bowling pin straight up with an initial speed of 7.70m/s. How much time elapses until the bowling pin returns to the juggler's hand?

In a frictionless environment, which energy stays the same? 1. Kinetic Energy 2. Potential Energy 3. Internal Energy 4. Total Mechanical Energy

A snail crawls 5 inches in 15 minutes. What is its speed in in./min? A. 33 in./min B. 3.3 in./min C. 0.33 in./min

Boss tweed encourages his associates to work "like a well-oiled machine", thus providing his workers with A. an analogy B. a heuristic C. an algorithm D. functional fixedness (not correct)

How much force is needed to make a 60kg object accelerate at a rate of 2.0 m/S2? 62N 62kg 120N or 120Kg

You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. Calculate the energy.

Three ideal polarizing filters are stacked, with the polarizing axis of the second and third filters at 21 degrees and 61 degrees, respectively, to that of the first. If unpolarized light is incident on the stack, the light has intensity 60.

What does an electric current produce

A series circuit contains three 2 Ω resistors and a 6 Ω resistor. The current in each resistor is 4.0 A. What is the voltage of the battery in the circuit? 2.0 V 3.0 V 32 V 48 V

A solid metal ball and a hollow plastic ball of the same external radius are released from rest in a large vacuum chamber. When each has fallen 1 m, they both have the same?