Physics Concepts Flashcard

Front

What does the inverse square law relate to in physics?

Back

The way forces like gravity and electromagnetism decrease with the square of the distance.

Front

Which statement defines gravity?

Back

The force of attraction between any two masses.

Front

What is a gravitational field?

Back

A region around a mass where another mass experiences a force of attraction.

Front

What is an electric field?

Back

A region around a charged particle where electric forces are exerted on other charges.

Front

What is a magnetic field?

Back

A region around a magnet or moving charge where magnetic forces can be detected.

Front

What is the formula for gravitational force?

Back

F = G * (m1 * m2) / r^2, where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses, and r is the distance between their centers.

Front

What is the principle of superposition in physics?

Back

The net effect of multiple forces acting on an object is the vector sum of the individual forces.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is Newton's first law of motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is kinetic energy?

Back

The energy of an object due to its motion, calculated as KE = 1/2 mv^2, where m is mass and v is velocity.