What is the state of matter that consists of a gas-like mixture of free electrons and nucle of atoms that have been stripped of electrons

Most energy in an ecosystem comes originally from_

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

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)