Which of the following situations would cause the greatest decrease in the motion of molecules in a system?
A. The system absorbs 75 J of heat, and its volume doubles.
B. The system releases 75 J of heat, and its volume is halved.
C. The system absorbs 75 J of heat, and its volume is halved.
D. The system releases 75 J of heat, and its volume doubles.

Awave travels at a speed of 5.2 m/s. if the distance between crests is 0.40 m, what is the frequency of the wave? use f=v/wavelength a. 13 hz b. 2.1 hz c. 0.077 hz d. 5.6 hz

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)