Which refers to the change in wavelength that occurs when an object moves toward or away from a light source?

So if an elephant is walking at 2.25 milers per hour (1 meter per second), slower then a normal human pace, and has a mass of 13,000 kg what would need to be the approximate momentum of a golf ball that has a mass of.

Which of these statements best proves that electromagnetic forces are weaker than strong nuclear forces? Neutrons do not repel or attract each other when they are in the nucleus.

Why is it difficult to prove the law of conservation of mass when a gas is produced?

Aerogenerators are used to produce electricity from

What is the acceleration of an object with a mass of 15 kg and a coefficient of friction of 0.18

What is the difference between speed and velocity and give an example.

Water flows over a section of niagara falls at the rate of 1.2x10^6 and falls 50.0 m. how much power is generated by the falling water

What is the darkest side of the moon called?

Brian is a healthy young man. He has been training with his teammates for a 50-yard dash for months. However, even with practice, he cannot run fast enough to qualify. What is the most likely reason that Brian can't qualify?

1. Are BEVs or hydrogen fuel cell vehicles a more promising transportation technology for the future? 2. Should car companies be required to produce electric cars?