A light day moves through air and approaches a body of water at an angle of 30 degrees. Find the angle of refraction (n=1.00 air) (n=1.33 water)

Aheavy piece of hanging sculpture is suspended by a90-cm-long, 5.0 g steel wire. when the wind blows hard, the wire hums at its fundamental frequency of 80hz. what is the mass of the sculpture?

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m

Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine