What can you caculate if you know the frequency and speed of a wave

A. 5 kg air puck moves to the right at 3 m/s, colliding with a 1.5kg air puck that is moving to the left at 1.5 m/s. 1. Determine the direction and speed of the pucks' motion if they stick to each other after the collision. 2.

Which is not part of an AC motor? magnet coil of wire commutator power source

large cylindrical water tank is mounted on a platform with its central axis vertical. The water level is 3.75 m above the base of the tank, and base is 6.50 m above the ground. A small hole 2.22 mm in diameter has formed in the base of the tank.

Potassium-40 has a half-life of 1.3 billion years. As the potassium-40 isotope decays, it becomes argon. If a rock was formed with 12 g of potassium-40, approximately how long would it take for 75% of the potassium-40 to be replaced by argon?

What is the speed of a rocket in m/s that travels 900 meters in 12.12 seconds

True or false? One reason gases are easy to compress is because their particles have higher energy.

What would be the reactant (s) of the following chemical reaction: (all numbers should be smaller [subscripts]) H2O2 - - > H2O + O2

Which of these best describes how the kinetic energy of carbon dioxide molecules change as the carbon dioxide is heated? Kinetic energy decreases. Kinetic energy increases. Kinetic energy increases, then decreases.

Was Copernicus heliocentric or geocentric

What are Galaxies classified by?