When a screen is used to easily separate substances, what physical properties are being used?

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

What happens to the temperature of a substance when the average kinetic energy of its particles increases?