An oil layer that is 5.0 cm thick is spread smoothly and evenly over the surface of water on a windless day. what is the angle of refraction in the water for a ray of light that has an angle of incidence of 45° as it enters the oil from the air above? (the index of refraction for the oil is 1.15, and for water it is 1.33.)

Anybody wanna ? (picture included? )

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

On a hot saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 22degreesc. at noon the air conditioner is turned off, and the people go home. the temperature outside is a constant 33degreesc for the rest of the afternoon. if the time constant for the building is 4 hr, what will be the temperature inside the building at 4 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? at 6 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? when will the temperature inside the building reach 24degreesc? 324281