Analyzing Lissajous Figures: Answer these questions about the last part assuming the function generators are always outputting sine waves.

Same Frequency, special cases: What do you expect to see if the two function generators are at exactly the same frequency and in-phase? What if they are out of phase (by 180 degrees)? What if they are 90 degrees out of phase?
Same Frequency, general case: In general, what do you expect to see if the two function generators are at exactly the same frequency with arbitrary phase?
Perfect n:m ratio: Suppose the two frequencies were exactly in an integer ratio (2:1, so one is twice the other; 3:2, so one is 3/2 of the other; etc.). What do you expect to see (as a static image) in this case? (Again, you may consider phase shift as well.)

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b. refraction c. diffraction d. interference

1. how much energy is needed to raise the temperature of 40.0 g of argon from 25c to 40c? the specific heat capacity of argon is 0.520 j/(g·k) 2a. 23.0 ml of 0.100 m hcl (standard) are added from a buret to neutralize 50.0 ml of an unknown basic solution. 2b. if the oh- produced in the previous reaction came from ca(oh)2, then what is the molarity of the ca(oh)2? 3.calculate the new freezing-point of a solution when 60.5 grams of cacl2 solute is dissolved in 0.612 kg of water. 4. what is the maximum number of moles of alcl3 that can be produced from 5.0 mol al and 6.0 mol cl2? 5. a sample of oxygen gas has a volume of 150 ml when its pressure is 0.923 atm. if the pressure is increased to 0.987 atm and the temperature remains constant, what will the new volume be? 6. nitrogen gas in a closed container at a temperature of 100.0 oc and 3.0 atm is heated to 300 oc. what is the pressure of the gas at the higher temperature?

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.