A boy claps his hand once every second and hears the echo from a distant building. He hears the echo of each clap midway between it and the next clap. If v=340m/s, what is the distance of building from the boy?​

Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

Which statement correctly describes the relationship between frequency and wavelength?