When an object is getting closer to us, it emits redder light. True or False

A steel cylinder with a moveable piston on top is filled with helium (He) gas. The force that the piston exerts on the gas is constant, but the volume inside the cylinder doubles, pushing the piston up.

9. A woman runs a kilometer using a force of 210N and a power output of 500W. How long in minutes does it take this woman to complete 1 kilometer?

Ho Chi Minh led the Communist forces in Indochina and in North Vietnam. a. True b. False Hitler and Mussolini headed two of the Axis powers of World War II. a. True b. False

Chapter 11, reorganization, permits debtors to A. keep their homes. B. receive an immediate discharge of debts. C. stay in business. D. re-obtain a previously repossessed car.

How can astronomers study space beyond Earth?

When a bat uses echolocation to determine the distance to an insect, it sends out a sound wave and waits to see how long the sound takes to echo back. Suppose now that a bat hears its echo 0.06 LaTeX: ss after it emitted the sound.

An exhausted bicyclist pedals somewhat erratically when exercising on a static bicycle. The angular velocity of the wheels follows the equation? (t) = at? bsin (ct) fort?0, where t represents time (measured in seconds), a = 0.500 rad/s2, b = 0.

This boy uses a force to lift a heavy rock. (He is carrying it.) What can the boy do if he wants to lift the same rock more quickly? A. use greater upward force B. use greater downward force C. decrease the force of gravity D.

The difference in electronegativity values between H and O is 1.4. What type of bond will these elements form?

True or false. when light passes from one medium to another the speed changes.