Question 1 (10 points) Determine the limit or show it does not exist. 

A hydrogen atom initially in its ground level absorbs a photon, which excites the atom to the n=6 level.  What is the wavelength (in nm) and frequency (in 10^15 Hz) of the photon?

A 4.78 MeV alpha particle from a 226Ra decay makes a head-on collision with a uranium nucleus.  A uranium nucleus has 92 protons.    What is the distance (in femtometers, i.e. 1e-15m) of closest approach of the alpha particle to the center of the nucleus?  Assume that the uranium nucleus remains at rest and that the distance of closest approach is much greater than the radius of the uranium nucleus.  

Question 8 (10 points) Given Compute then use it to determine if the vector field is conservative.  Be sure to explain your response. A yes or no response is insufficient.  Find

True/False: 75% of physicians in Australia are specialists and only 25% are generalists. 

Which of the following services are not covered by public health insurance in Australia?

What percentage of Saudi Arabia’s population is estimated to be overweight or obese?

Which German city is best known for its financial, banking, and insurance industries?

Which statement best reflects Redstone’s approach as a venture capital firm?

Why is Berlin considered important for international trade?