a man standing between two cliffs fires a gun and hears echoes after every 1 second. The distance of the man from the nearest cliff is 165m. calculate the distance between two cliff also calculate the speed of the sound

Photons with the highest energy have the longest period

Of is j/kg·k. if a 2.6 kg of isk to k,is ?

Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?