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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