Ed-Hack: Quantum Mechanics

All objects in the universe attract each other through gravitation force is called...

• The Law of Universal Gravitation
• The Law of Conservation of Momentum
• The Law of Thermodynamics
• The Law of Monty the Snake

Complete the following statement: The farther away two planets are the _______ the gravitational force between them.

• more
• same
• dosen't matter
• less

A baseball and bat are on the ground.   What is true?

• They attract each other with equal gravitational force.
• There is no gravitational force between them.
• The baseball will float because it's lighter.
• The bat will pull the baseball closer to itself.

It is a branch of physics that includes various areas of study based on quantum theory which deals with matter and electromagnetic radiation, and the interactions between them.

• Optics

• Nuclear Physics

• Thermodynamics

• Quantum Physics

He is the one who created the principle of gravity.

• Isaac Newton (1643-1727)

• Galileo Galilei (1564-1642)

• Albert Einstein (1879-1955)

• James Clerk Maxwell (1831-1871)

The number of wavelengths that pass a point each per second is:

• frequency
• period
• longitudinal 
• transverse wave 

When the frequency of a wave increases, what happens to the wavelength?

• The wavelength is not directly affected by the frequency of a wave.
• The wavelength increases.
• The wavelength decreases.
• More specific information is needed to form a conclusion about the wavelength.

Electrons are emitted when light of sufficient energy strikes the surface of metal.  This is best described as

• the photoelectric effect
• Einstein's theory of relativity
• Bohr model of atom
• Quantum mechanical model of atom

Which is needed to determine the amount of gravitational force between two objects?

• distance and mass

• weight and time

• area and weight

Calculate the gravitational force between two objects when they are 0.750m apart. Each object has a mass of 5.00kg.

• 2.96x10^-7N

• 3.00x10^-6N

• 2.22x10^-9N

• 2.23x10^-8N