A hockey puck moves 18 meters southward, then 12 meters northward, and finally 8 meters southward. What is the magnitude, and direction of displacement?

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

Could we see a galaxy that is 20 billion light-years away?

A1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. what is the magnitude of the friction force required to keep the car from sliding?