When light travels from air into water which is more dense than the air , it’s speed is lower. So the light wave will
A. bend towards the normal to the surface
B.-always lies along the normal to the surface
C. be unaffected
D. bend away from the normal to the surface

Which feature indicates that mars resides in the inner region of the solar system

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.

Humidity is to blame for that muggy, steamy feeling you experience on some hot summer days. what gas in the atmosphere causes humidity? a) oxygen b) hydrogen c) nitrogen d) water vapor