How much work is done in order to cook a bag of popcorn in a 1000 watt microwave oven for 4.0 minutes?

The graph represents the distance a car travels over time while on the highway. which statement about the car's trip is accurate? a) the car does not move over time. b) the car travels at a constant velocity. c) the car's velocity increases constantly over time. d) the car's velocity decreases constantly over time.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.