Q. What is the final equilibrium temperature when 12 g of milk at 20 degrees C is added to 180 g of coffee at 92 degrees C? assume the specific heats of milk and coffe are the same as that of water, and neblect the specific heat of the container?
Q. A light ray of wavelength 598 nm is incident at angle theta on the top surface of a block of polystyrene surrounded by air. a) find maximum value of theta for which the refracted ray will undergo total internal reflection at the left vertical face of the block b) repeat the calculation for the case in which the polystyrene block is immersed in water. c) What happens if the block is immersed in carbon disulfide?