Which are characteristics of concave mirrors? Check all that apply.
surface curves inward
image can be upside down
image is always virtual
surface curves outward
image can be real

What does si stand for,when referring to a system of measurement

Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.

Which sections of the heating curve illustrate this process?