Fill in the blank spaces. Many forces are known as "a)
forces" because they only act when things
touch. There are also some forces which
push or pull without touching. These are
called "b) forces". Examples
are c)
electrical force and
d)
..force.
Our modern understanding of forces
began
with
e)
(person) about 300 years ago.
He figured out how forces cause things to
f)and to stop moving. He
figured out that things fall down because of
the force of g)

As the distance from a magnet increases, what happens to the magnet force?

In the middle of the night you are standing a horizontal distance of 14.0 m from the high fence that surrounds the estate of your rich uncle. the top of the fence is 5.00 m above the ground. you have taped an important message to a rock that you want to throw over the fence. the ground is level, and the width of the fence is small enough to be ignored. you throw the rock from a height of 1.60 m above the ground and at an angle of 54.0 degrees above the horizontal. part a part complete what minimum initial speed must the rock have as it leaves your hand to clear the top of the fence? express your answer with the appropriate units. part b for the initial velocity calculated in the previous part, what horizontal distance beyond the fence will the rock land on the ground?

Hurry! how much heat is absorbed by a 72g iron skillet when its temperature rises from 11°c to 23°c?