Why sound travels faster in humid air than normal air as humid air is denser than normal air? (Akash asked) Answer: The speed of sound in a medium is inversely proportional to the square root of its density. Humid air is less dense than dry air. Therefore the speed of sounf in humid air is greater than that in … Continue reading Speed of sound
Charles posted this interesting Question on a Super Hero crossing the Mach 1 Speed. Visitors are requested to respond with your ideas. “I’m working on a novel with a “superhero” protagonist. The guy puts on his spandex, and takes off across state, say. OK, as he speeds up, can he tell when he approaches and ...Read the full post
Important points Sound is a form of energy which produces the sensation of hearing. Sound is produced due to vibrations in the body and travels in all directions away from the source. Sound requires a medium for propagation. It cannot travel in vacuum. Sound travel faster in solid than in liquids or gases. The velocity … Continue reading SOUND
Sanjeet asked: "the displacement of a particle in periodic motion is given by "y=(cos2t-2cost+2sin^2t+1). What is the no. of beats that can be heard in 10 seconds?"