Could i please get some help with this, thank you so much !!

Topic 1: Nuclear Physics -> See Websites below:

List of radioactive nuclides by half-life - Wikipedia - HALF-LIFES

Atomic Weights and Isotopic Compositions for All Elements (nist.gov) - ATOMIC MASSES

Question 1 The sun generates its energy through nucleartusion, making helium from hydrogen. The main process by which this happens, called the protonproton chain, goes as follows: . Two protons come together to create deuterium, a positron, a neutrino, and energy: p + p a D + e+ + v + energy - The deuterium fuses with another proton to make 3He: D + p > 3He + energy - Fianlly, 4He is produced by fusing two 3He nuclei together: 3He + 3He > 4He + p + p + energy What isthe total energy released during the creation of one 4He nucleus? Give your answer in MeV, and remember that you need to make two 3He nuclei in the process. Be sure to use at least five signicant gures for your masses, but your nal answer should have three or tour sig gs. : Question 2 A sample of 14C has an activity of t .51 Ci. What is the mass of the sample? Use the following tables for haltlites and atomic masses (in atomc mass units), : Question 1 A circular aperture is lit up by a laser with wavelength 620. nm. The central maximum on the screen 36.0 cm away has the same diameter as the circular aperture. What is the diameter of the circular aperture? Question 2 A 0.600-cm-tall candle flame is 4.10 m from a wall. You happen to have a lens with a focal length of 23.0 cm, and notice while playing around with it that there are two locations you can place the lens and form a well-focused image of the candle flame on the wall. With the lens in the location furthest from the wall, what is the height of the image? (Input a positive height)