UPCO Chapters 11 & 12 (2): Question Preview (ID: 14977)

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On a windy day, a spinning windmill has
a) potential mechanical energy
b) kinetic mechanical energy
c) kinetic thermal energy
d) potential thermal energy

Which force causes a ball rolling down the street to slow down?
a) Gravity
b) Magnetic
c) Electrical
d) Friction

Which of the following is a good insulator for electric wires?
a) Copper
b) Aluminum
c) Silver
d) Rubber

Which atomic particle has a negative charge?
a) Proton
b) Neutron
c) Electron
d) Positron

When a glass rod is rubbed with a silk cloth it loses electrons. The glass rod will become
a) negatively charged
b) positively charged
c) neutral
d) positively and negatively charged

A neutral object will have
a) equal amounts of positive and negative charges
b) unequal amounts of positive and negative charges
c) large amounts of negative charges
d) large amounts of positive charges

The best conductors of electricity include:
a) aluminum, copper, gold
b) copper, aluminum, plastic
c) rubber, plastic, glass
d) aluminum, plastic, rubber

Which action requires no work to be done on an object?
a) holding an object stationary about the ground
b) lifting the object from the floor to the ceiling
c) decreasing the speed of a moving object
d) pushign the object along the floor

The amount of work done by a machine is never larger than the work put into a machine. Some of the input work is lost because of:
a) friction
b) gravity
c) static electricity
d) magnetism

Fossil fuels, such as oil and coal, formed over
a) two hundred million years
b) two years
c) two hundred years
d) two thousand years

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