Two mechanical waves intersect and produce the straight line seen here. what must be true about the amplitude of both waves? a) they are equal. b) they are summative. c) they are equal and opposite. d) the blue wave transfers more energy than the red wave.

Does anyone have the answers to online physics course plato course physics, semester a v3.0

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?

First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.