” Why is it important to identify a control group?

Adelivery truck leaves a warehouse and travels 2.60 km north. the truck makes a left turn and travels 1.25 km west before making another right turn to travel 1.40 km north to arrive at its destination. what is the magnitude and direction of the truck's displacement from the warehouse?

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?