When two objects slide by one another, which of the following statements about the force of friction between them, is true
1. The frictional force is always equal to μkn.
2. The frictional force is always less than μkn.
3. The frictional force is determined by other forces on the objects so it can be either equal to or less than μkn.

as technology advances, new experiments often expose problems in accepted theories. c

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-lavira: )

b.a device that inputs heat into a cool object

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it

radial fractures in a piece of glass look most like which of the following?

a. spokes of a wheel

b. a circle

c. a zig zag

d. none of the above

the correct answer is a. spokes of a wheel

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