Physics Reality Questions Flashcards
What is the fundamental force that causes objects with mass to attract each other?
Gravity
True or False: Light can travel through a vacuum.
True
Fill in the blank: The formula for calculating force is ______.
F = ma
What is the unit of measure for energy in the International System of Units (SI)?
Joule
Which law states that an object in motion stays in motion unless acted upon by an external force?
Newton’s First Law of Motion
What is the speed of light in a vacuum?
Approximately 299,792 kilometers per second
True or False: Absolute zero is the lowest possible temperature.
True
What principle explains why airplanes can fly?
Bernoulli’s Principle
What is the relationship between frequency and wavelength in a wave?
They are inversely proportional.
What is the term for the amount of matter in an object?
Mass
Fill in the blank: The law of conservation of ______ states that energy cannot be created or destroyed.
Energy
What is the term used to describe the bending of light as it passes from one medium to another?
Refraction
What is the formula for calculating kinetic energy?
KE = 1/2 mv^2
True or False: Electrons have a positive charge.
False
What concept explains the behavior of particles at the atomic and subatomic levels?
Quantum Mechanics
What is the unit of frequency?
Hertz (Hz)
Fill in the blank: The ______ is the center of an atom, containing protons and neutrons.
Nucleus
What principle states that the total momentum of a closed system remains constant?
Conservation of Momentum
What is the phenomenon where a wave spreads out after passing through a narrow opening called?
Diffraction
True or False: A conductor allows electric current to flow easily.
True
What is the measure of the average kinetic energy of particles in a substance?
Temperature
What is the term for the energy possessed by an object due to its position?
Potential Energy
What is the equation for calculating gravitational potential energy?
PE = mgh
Fill in the blank: The ______ states that for every action, there is an equal and opposite reaction.
Third Law of Motion
What is the unit of electric resistance?
Ohm
True or False: In a vacuum, all objects fall at the same rate regardless of their mass.
True
What is the principle that describes how pressure is transmitted in a fluid?
Pascal’s Principle
What is the term for the energy associated with the motion of charged particles?
Electric Energy
