What are the wavelengths of electrons with kinetic energies 10 ev, 1000 ev, and 10^7 ev?

In the middle of the Indian Ocean, the tsunami referred to in the passage was a train of pulses approximating a sinusoidal wave with speed 200 m/s and wavelength 150 km. What was the approximate period of these pulses? A. 1 min B. 3 min C. 5 min D.

If 34.7 g of O2 reacts with iron to form 79.34 g of iron oxide, how much iron was used in the reaction? A. 19.84 g B. 44.64 g C. 104.1 g D. 114.04 g

What type of force keeps a moving car going in a circle and water in a bucket when swung around your head on a rope

A box rests on a horizontal, frictionless surface. a girl pushes on the box with a force of 17 n to the right and a boy pushes on the box with a force of 13 n to the left. the box moves 3.5 m to the right.

A dog has a mass of 20 kg. If the dog is pushed across the ice with a force of 40 N, what is its acceleration?

A 100 kg train traveling at 20 m/s crashes into a stationary 400 kg car. After the collision the car and the train are stuck together. What is their velocity.

How your weight would change with time if you were on a space ship traveling away from, earth toward the moon

A heavy planet and a light planet are found to have the same momentum. What do we know about their speed? A. The light object is slower B. The heavy object is slower C. They have the same speed

Solar cells are used to a. photograph sunspots. b. convert sunlight into electricity. c. convert sunlight and carbon dioxide into sugars. d. convert electricity into solar energy.

What scientific evidence supports the Big Bang theory? Universe expansion Redshift Composition of the universe All of the above None of the above