When a substance changes its state of matter, it takes a specific amount of energy to complete the change. When the phase change is between solid and liquid, the amount of energy per unit mass is called the heat of fusion. These heat of fusion example problems will show how […]

# Physics Example Problems

Specific heat is the amount of heat per unit mass needed to increase the temperature of a material by one degree Celsius or Kelvin. These three specific heat example problems will show how to find the specific heat of a material or other information involving the specific heat. Specific Heat […]

## Specific Heat Example Problem

Hooke’s Law is a law that says the restoring force required to compress or stretch a spring is proportional to the distance the spring is deformed. The formula form of Hooke’s Law is F = -k·Δx where F is the restoring force of the spring k is the proportionality constant […]

## Hooke’s Law Example Problem

What temperature are Fahrenheit and Kelvin equal to each other? This question is similar to the popular homework question “When does Celsius equal Fahrenheit?” where the two different temperature scales read the same value. This example problem not only gives you the answer, it shows step by step, how to […]

## What Temperature Are Fahrenheit and Kelvin Equal?

Potential energy is energy attributed to an object by virtue of its position. When the position is changed, the total energy remains unchanged but is converted to a different type of energy, like kinetic energy. The frictionless roller coaster is a classic potential and kinetic energy example problem. The roller […]

## Potential And Kinetic Energy Example Problem – Work and Energy ...

A collision is considered an inelastic collision when kinetic energy is lost during the collision. This inelastic collision example problem will show how to find the final velocity of a system and the amount of energy lost from the collision. Inelastic Collision Example Problem Question: A 3000 kg truck travelling […]