2nd Semester Review Pt3: Question Preview (ID: 9802)

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Two or more simple machines that work together
a) compound machine
b) pulley
c) lever
d) wheel and axle

The unit for power
a) joule
b) MA
c) Watt
d) second

A swinging pendulum has the least potential energy when it is
a) at its highest point
b) at the bottom of the swing
c) halfway between the top and bottom
d) 3/4 of the way up

Which does not represent work in the scientific sense
a) lifting a rock
b) throwing a rock
c) holding a rock
d) dropping a rock

E=MC2 shows
a) mass is the same not matter where it is
b) mass and energy can be converted into one another
c) mass and energy are very different and cannot be converted into each other
d) speed of light depends on mass

Energy being stored in an object due to its position
a) motion
b) potential energy
c) kinetic energy
d) nuclear energy

an example of Kinetic energy being converted to potential and back is
a) boy jumping on a trampoline
b) rock sitting on a hill
c) moving train
d) suspension bridge

Energy of motion
a) kinetic
b) potential
c) chemical
d) electromagnetic

the fixed point of a lever
a) resistance arm
b) effort arm
c) fulcrum
d) fulcrud

An incident wave strikes a mirror at an angle of 33 degrees what is the angle of reflection
a) 40
b) 66
c) 15
d) 33

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