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Energy, Work, Power and Power

Terms in this set (23)

Significant Figures

Each of the digits of a number that are used to express it to the required degree of accuracy, starting from the first nonzero digit

Energy is the movement/displacement of matter

Law of Conservation of Energy

Energy cannot be created or destroyed

Energy of motion. All moving things have kinetic energy

Potential Energy

Energy that is stored in an object

Mechanical Energy

The sum of kinetic and potential energy that is used to do work

Chemical Energy

Energy that is stored in the bonds of chemical compounds

Type of kinetic energy with the ability to form types of light people can see as well as invisible waves

Energy that comes from heat

Is the movement of energy through substances in longitudinal (compression/rarefaction) waves

Electrical Energy

Energy that is caused by moving electric charges

Created from the splitting of uranium atoms in a process called fission. Fission releases energy that can be used to make steam, and the steam is used to power a turbine to generate electricity

Kinetic Energy Equation

½m*v2
m = mass
V = speed

Gravitational Potential Energy Equation

mgh
m = mass
g = gravitational Acceleration or 10 newtons
h = height

Elastic Potential Energy Equation

Ave. F*d
Ave. F = Average force
d = distance pulled back

When a force acts upon an object to cause a displacement (or a motion)

F*D
F = force
D = displacement
If displacement is directly up, the force is the weight of the object in Newtons
1 kg = 10 Newtons

The rate at which work is done on an object

W/t
W = work
t = time in seconds

Unit for GPE, KE, EPE, Work

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