speculate the possible sources of error when measuring the coefficiant of linear expansion for aluminum, brass and copper​

Excuse ! extra points plus ! super desperate ! the position of an object does not move relative to a reference point. relative to the reference point the object _. a.) is not moving. b.) is moving.

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?