What is meant by saying that a hypothesis must be testable?

Which of the following proved that the de broglie's equation was correct? A) Einstein theory of relativity B) Planck's equation C) quantum mechanics D) Davisson-Germer experiment

A 10kg object is 15 meters up a hill. find its potential energy?

Starting at a certain speed, a bicyclist travels 200m. Suppose the bicyclist undergoes a constant acceleration of 1.20m/s squared. If the final speed is 25.0m/s, what was the bicyclists initial speed?

Strip electrons from an atom and the atom becomes a

As a clinical chemist in charge of the testing of blood samples. You are required to mix a solution of sodium chloride with water in the ratio of 2:5.

Give a sentence with the word velocity in it

Which description matches up correctly with each type of particle? Alpha - no mass and no charge; beta - mass of 4 and charge of + 2; gamma - charge of - 1 and mass of 0 Alpha - mass of 0 and charge of - 1; beta - mass of 4 and charge of + 2;

Describe the factors that form deep currents

A comet is cruising through the solar system at a speed of 50000 kilometers per hour for 4 hours time. What is the total distance traveled by the comet during this time in kilometers, miles, and light years?

A gas in a closed container is heated with 12J of energy, causing the lid of the container to rise 3m with 5N of force. What is the total change in energy?