In an experiment to measure the index of refraction of human skin, it was found that if a beam of unpolarixed light was shone on a skin sample from air at an incident angle of 54.7 degrees, the reflected light was completely polarized. What is the index of refraction of this skin sample?

Sasha has just gotten a new job in a nearby city. after comparison shopping, she found that renting a nice two-bedroom apartment would cost around $800 per month. her utilities would cost about $150 per month. sasha has enough money saved for a down payment, and she found that she can buy a three-bedroom house or condo with a mortgage payment of $1,000 per month, including taxes and homeowner's insurance. her utilities would cost about $200 per month. what is the advantage of buying the house over renting the apartment?