What is the difference in average speed between a car that traveled 150 kilometers in 5 hours and another that traveled 130 kilometers in the same time? Just write the number.

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

Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not

Adolphin emits ultrasound at 100khz and uses the timing of reflections to determine the position of objects in the water. part a what is the wavelength of this ultrasound? assume that temperature of water is 20 degrees c. answer in cm