Recent content by MYS9

I have a question. If there are 2 (only 2) big speakers at opposite ends of an outdoor stadium, will the sound be good? Can you explain this in terms of physics. Thank you!

A light ray traveling through a glass medium, index of refraction1.52, is incident on the boundary between the glass and water, index of refraction 1.33 What is the critical angle for the glass at this boundary? What would the critical angle be if the incident medium was air instead of water...

If there is a car with a mass of 1200 kg and the radius of the curvature is 25m, and the speed is 43km/h, what is the acceleration? How do I find the acceleration At what speed would the centripetal force equal the force of gravity? ( I got 15.7 m/s but I'm not sure if this is right)...