Spring Physics Final Exam Review

Front

What are the four fundamental forces in physics?

Back

1. Strong Nuclear: Attract, Strongest 2. Electromagnetic (Electrical) Force: Both, Middle 3. Gravitational Force: Attract, Weakest 4. Weak Nuclear: Attract, Middle

Front

What happens to the force of gravity if you double the mass of an object?

Back

The force of gravity doubles.

Front

How is torque calculated?

Back

Torque (τ) = Force (F) × Distance (r) from the pivot point.

Front

What is the formula for calculating torque when a force is applied at an angle?

Back

Torque (τ) = Force (F) × Distance (r) × sin(θ), where θ is the angle between the force and the lever arm.

Front

What is the effect of increasing the length of a wrench on the torque applied?

Back

Increasing the length of the wrench increases the torque applied for the same amount of force.

Front

What happens to electrons when brighter light is shone on a metal?

Back

More electrons are emitted with greater energy.

Front

Define Refraction.

Back

Refraction is the bending of light as it passes from one medium to another with a different density.

Front

What is the relationship between mass and gravitational force?

Back

Gravitational force is directly proportional to the mass of the objects involved.

Front

What is the unit of torque?

Back

The unit of torque is Newton-meter (Nm).

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.