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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
zero
B
negative
C
constant
D
positive
2) Unit used to measure energy in food
A
kg
B
joule
C
newton
D
Calorie
3) Si unit for energy
A
newton
B
Watt
C
Joule
D
kgm
4) A bus transfers chemical potential energy to ____ so that the bus moves
A
GPE
B
Electrical
C
thermal
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
Kinetic
B
Maximum KE
C
GPE
D
Maximum Potential Energy
7) The measurement of how well a machine operates is the machines
A
efficiency
B
Mechanical advantage
C
work
D
Power
8) The rate at which work is done
A
effort time
B
force
C
effeciency
D
power
9) The output work of a machine compared to the input work is the
A
resistance
B
power
C
effort
D
efficiency
10) The amount a machine multiplies an effort force is called
A
efficiency
B
resistance force
C
mechanical advatage
D
fulcrum
*select an answer for all questions
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