Tuesday

September 2, 2014

September 2, 2014

Posted by **crystal** on Sunday, September 11, 2011 at 7:47pm.

r = 12.0 feet wide. Attached to the ceiling is a piece of glass (with unknown index of refraction) which is 2.5 feet thick. A laser pointer in the bottom left corner is aimed so that the ray which reflects off the glass hits the room's bottom right corner.

(a) What is the ray's angle of incidence at the glass?

°

(b) If the ray which refracts into the glass hits the ceiling 7.7 feet away from the left wall, what is the refracted ray's angle of refraction at the glass?

°

(c) What is the glass's index of refraction?

- physics -
**bobpursley**, Sunday, September 11, 2011 at 7:54pmDraw the figure, use geometry to calculate the angles.

**Answer this Question**

**Related Questions**

physics - a room which is h = 9.0 feet tall and r = 12.0 feet wide. Attached to ...

college physics - I know you need to use geometry but i don't know how a room ...

physics - The figure below shows a room which is h = 8.5 feet tall and r = 14.5 ...

MATH WORD PROBLEMS - PART A Camilla has a rectangular print that is 34 inches ...

math - A school is soundproofing a band room with insulating tiles. The room is ...

Physics - One application of the index of refraction is analysis of crime scenes...

Geometry - A gallon of paint costs $20 and covers 465 square feet. Three coats ...

math - Erika is painting her living room. The room measures 10.5 feet by 11.5 ...

Geometry - the walls, floor, and ceiling of a room form a rectangular solid. The...

physics - 7. A drop of oil is placed on a glass block. The glass has an index of...