What type of system allows energy but not matter to enter and exit? a. open
b. connected
c. isolated
d. closed

Which is not a step in the rock cycle?

The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost