Energy
GPE
KE
Electricity
MISC
100
Which is the best conductor of transferring heat? Copper or Plastic
copper
100
The size of the gravitational force between two objects depends on their _______ and ________.
mass and distance between the objects
100
As the kinetic energy of the molecules in a substance increases, the
temperature also increases
100
Every charged particle produces a(n) _____________.
magnetic field
100
A tug-of-war that results in one team pulling the other across the line is an example of _________ forces.
unbalanced
200
Heat always moves from an object of ______ temperature to an object of ________ temperature.
higher; lower
200
Gravitational potential energy depends on what 3 things?
mass; gravity; height
200
As a dropped penny falls toward the ground, ________ energy is converted to _________ energy.
potential; kinetic
200
An electric motor and generator are similar in that they both do what?
Convert one form of energy into another
200
A device that prevents a circuit from current overload is called a __________.
circuit breaker
300
AS the kinetic energy of the molecules in a substance increases, the temperature ________.
increases
300
What is gravity on the Earth?
9.8 m/s^2
300
What are the 3 temperature scales?
Celsius; Fahrenheit; Kelvin
300
Appliances connected so that they form a single pathway for charges to flow are connected in a _________ circuit.
series
300
A car is parked on a hill. In order to keep the car from rolling downhill, how great must the static friction acting on the car be?
equal to gravity pulling the car down
400
The transfer of energy by the movement of fluids or gases with different temperatures is called _________.
convection
400
Calculate the gravitational potential energy relative to the ground when an 82 kg person climbs to the top of a 2.0 m stepladder.
1607 J
400
Which temperature scale is based on absolute zero?
Kelvin
400
Potential difference is also known as...
voltage
400
When two balls collide, the momentum of the balls after the collision is explained by ____.
the law of conservation of momentum
500
Generators convert _________ energy into _________ energy.
mechanical; electrical
500
What is the gravitational potential energy of a 54 kg box that is 8.0 m above the ground?
4234 J
500
What is the kinetic energy of a 1.40 kg discus with a speed of 22.5 m/s?
354 J
500
Electric force varies depending on what 2 things?
charge and distance between charged objects.
500
How do you determine a person's weight?
mass*gravity
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