A decrease in the frequency of light from a galaxy would make the galaxy appear redder. T or F?

Extremely high temperatures and pressures are necessary for fusion reactions to take place in stars. true or false.

A wave has a wavelength of 8 mm and frequency of 3hertz. what is its speed?

A mass m1 is hung from a spring oscillates on a spring with spring constant k1. The amplitude of its motion is A1 and it has a maximum magnitude acceleration a1.

What step precedes the onset of hydrogen fusion in a star?

How can parts of a solution be separated by chromatography? O A. The solution is turned into a vapor. O B. The solution is collected as it is boiled off. O c. The solution is allowed to separate into layers. O D.

An 18000 kg freight car rests against a spring bumper at the end of a railroad track. The spring has constant k=3.2*10^5 N/m. The car is hit by a second car of 9400 kg mass moving at 8.0 m/s, and the two couple together.

What is a Nuclei of uranium atoms split apart

The velocity a rocket must reach to establish an orbit around Earth is called a. thrust velocity. c. artificial velocity. b. orbital velocity. d. escape velocity.

What is striking a match an example of? A) providing activation energy to a physical reaction B) providing activation energy to a chemical reaction C) an endothermic reaction D) an endothermic process

From Energy Graphs (LOLs) Again: Scenario 4 Hitting a Golf Ball Mass of the golf ball is 0.045 kg and has a forward velocity of 41 m/s due to the hit by the club. 9. What is the kinetic energy of the ball after being hit when its speed is 42 m/s? 10.