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2nd Semester Review Pt2
Test Description: Review
Instructions: Answer all questions to get your test result.
1) The total energy of a system remains
A
constant
B
zero
C
negative
D
positive
2) Unit used to measure energy in food
A
newton
B
kg
C
Calorie
D
joule
3) Si unit for energy
A
Joule
B
kgm
C
Watt
D
newton
4) A bus transfers chemical potential energy to ____ so that the bus moves
A
GPE
B
thermal
C
Electrical
D
Kinetic
5) Energy doesnt have to involve motion
A
false
B
true
6) In a pendulum when the pendulum is at its highest point it is called
A
GPE
B
Kinetic
C
Maximum Potential Energy
D
Maximum KE
7) The measurement of how well a machine operates is the machines
A
Mechanical advantage
B
Power
C
work
D
efficiency
8) The rate at which work is done
A
force
B
power
C
effort time
D
effeciency
9) The output work of a machine compared to the input work is the
A
effort
B
efficiency
C
resistance
D
power
10) The amount a machine multiplies an effort force is called
A
fulcrum
B
resistance force
C
mechanical advatage
D
efficiency
*select an answer for all questions
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