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Formulas
Formulas II
Simple Machines
Devices
Misc.
100
Work output/energy input is the formula
What is efficiency
100
What is the formula for resistance?
Resistance = voltage / current
100
A pair of scissors are examples of what simple machine?
What is lever
100
A device that converts chemical energy into electrical energy
What is Electrochemical cell
100
What do electromagnetic waves do?
They carry electronic signals over long distances by electromagnetic waves
200
The unit of power equal to 1 joule per second
What is watt
200
What is current measured in?
amps
200
A seesaw is an example of a
What is lever
200
A device that measures small currents
What is Galvanometer
200
What does AM and FM stand for?
What is amplitude modulation and frequency modulation
300
A comparison of the force needed to do the work directly with the force applied to the machine
What is mechanical advantage
300
What is resistance measured in?
Ohms
300
A staircase is an example of an
What is inclined plane
300
A device that increases or decreases voltage
What is Transformer
300
What is an example of a second class lever?
What is wheelbarrow
400
What is the formula for power?
Power = voltage * current
400
When you divide the radius of a wheel by the radius of its axle, you are calculating...
the ideal mechanical advantage of a wheel and axle
400
A bicycle is an example of a
What is wheel and axle
400
A device that changes the size or direction of a force used in doing work
What is Machine
400
What are the three parts of an electric motor?
What are brushes, armature, & commutator
500
What units is power measured in?
What is watts
500
The standard measurement unit of work or energy
What is joule
500
An axe is an example of a
What is wedge
500
A device that uses an electric current to turn an axle
What is electric motor
500
Name two nonrenewable sources of energy and two renewable sources of energy
What is coal/oil and wind/solar/nuclear