A scientist observed two basketballs roll and collide with each other. One was a 2.0 kg basketball traveling at a speed of 0.60 m/s north and the other was a 4.0 kg basketball traveling south at a speed of 0.90 m/s. After the collision, the final velocity of the 4.0 kg basketball is 0.50 m/s north, find the final velocity of the 2.0 kg basketball?

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?