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

If matter that was still begins to move, then;

The turnbuckle is tightened until the tension in the cable AB equals 2.3 kN. Determine the vector expression for the tension T as a force acting on member AD. Also find the magnitude of the projection of T along the line AC.

What is the acceleration of the train if it takes 8 seconds to reach 45 m/s?

3. If the average acceleration of a cheetah is 8 m/s, what will its velocity be after 3 seconds if it is initially walking at 1 m/s? a) 22 m/s b) 23m/s c) 24 m/s d) 25 m/s

The momentum of an object depends on what two forces

An example of a stable system

What causes chemical weathering? a. damage caused by animals and plants c. natural acids b. ice wedging d. physical factors

1. Strzała o masie 20 g tuż po wystrzale ma prędkość 50 m/s. Oblicz pracę wykonaną przez zawodniczkę. Ile wynosi energia potencjalna sprężystości napiętej cięciwy? 2. Na trampolinę o współczynniku sprężystości k=2 kN/m stanął zawodnik o masie 80 kg.

Two small plastic spheres between them has magnitude 0.22 N. What is the charge on each sphere is one the other? Explain whether it can be determined from the information give, whether the charges are positive or negative.

If it has enough kinetic energy, a moleculeat the surface of the Earth can escape the Earth's gravitation. The acceleration of gravity is 9.8 m/s2, and the Boltzmanns' constant is 1.38066*10-23 J/K.