The ceiling of your lecture hall is probably covered with acoustic tile, which has small holes separated by about 6.9 mm. using light with a wavelength of 579 nm, how far could you be from this tile and still resolve these holes? the diameter of your eye is about 5 mm.

( )m

could you resolve these holes better with red light or with violet light? (you have only 1 try.)

1. violet.

2. red

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

What characteristics of hv2112 make it the best candidate to be classified as a thorne-zytkow object?

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.