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Computer > Physics Reality Questions > Flashcards

Physics Reality Questions Flashcards

1
Q

What is the fundamental force that causes objects with mass to attract each other?

A

Gravity

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2
Q

True or False: Light can travel through a vacuum.

A

True

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3
Q

Fill in the blank: The formula for calculating force is ______.

A

F = ma

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4
Q

What is the unit of measure for energy in the International System of Units (SI)?

A

Joule

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5
Q

Which law states that an object in motion stays in motion unless acted upon by an external force?

A

Newton’s First Law of Motion

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6
Q

What is the speed of light in a vacuum?

A

Approximately 299,792 kilometers per second

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7
Q

True or False: Absolute zero is the lowest possible temperature.

A

True

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8
Q

What principle explains why airplanes can fly?

A

Bernoulli’s Principle

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9
Q

What is the relationship between frequency and wavelength in a wave?

A

They are inversely proportional.

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10
Q

What is the term for the amount of matter in an object?

A

Mass

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11
Q

Fill in the blank: The law of conservation of ______ states that energy cannot be created or destroyed.

A

Energy

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12
Q

What is the term used to describe the bending of light as it passes from one medium to another?

A

Refraction

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13
Q

What is the formula for calculating kinetic energy?

A

KE = 1/2 mv^2

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14
Q

True or False: Electrons have a positive charge.

A

False

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15
Q

What concept explains the behavior of particles at the atomic and subatomic levels?

A

Quantum Mechanics

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16
Q

What is the unit of frequency?

A

Hertz (Hz)

17
Q

Fill in the blank: The ______ is the center of an atom, containing protons and neutrons.

A

Nucleus

18
Q

What principle states that the total momentum of a closed system remains constant?

A

Conservation of Momentum

19
Q

What is the phenomenon where a wave spreads out after passing through a narrow opening called?

A

Diffraction

20
Q

True or False: A conductor allows electric current to flow easily.

A

True

21
Q

What is the measure of the average kinetic energy of particles in a substance?

A

Temperature

22
Q

What is the term for the energy possessed by an object due to its position?

A

Potential Energy

23
Q

What is the equation for calculating gravitational potential energy?

A

PE = mgh

24
Q

Fill in the blank: The ______ states that for every action, there is an equal and opposite reaction.

A

Third Law of Motion

25
Q

What is the unit of electric resistance?

A

Ohm

26
Q

True or False: In a vacuum, all objects fall at the same rate regardless of their mass.

A

True

27
Q

What is the principle that describes how pressure is transmitted in a fluid?

A

Pascal’s Principle

28
Q

What is the term for the energy associated with the motion of charged particles?

A

Electric Energy

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