2 answers:
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This is a controlled variable
To measure weight of a item
Answer:
The ability to do work
Explanation:
- Energy refers to the ability to carry out work.
- It is measured in Joules (J).
- Energy may exist in different forms such as potential energy when a body is at rest, kinetic energy when the body is in motion, etc.
- Energy can neither be created nor destroyed, however, it can be transformed from one form to another. For example, chemical energy may be transformed into mechanical energy or other forms of energy.
Helium is a light gas. Movement can be predicted by which chamber has the lighter gas(es) and which chamber has the heavier. constant changes can also be a variable. If the gas is constant, then changes are more easily predicted.
