4. A coat that has a mass of 15 kg is hanging from a shelf 2 meters above the floor. What kind of energy does the coat have and how many joules does it have?

It has potential energy

Explanation:

Given

Required

Determine the kind of energy and calculate the energy

The energy in the coat is the potential energy. This is so because of the object's position (i.e. 2m above) relative to other objects (i.e. the floor)

This energy is calculated as:

Where

So:

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.