estimate the temperature of the Universe at a time after the Big Bang when neutral atoms could form from the plasma and the Universe became transparent.

You are performing work as an assistant to a cosmology professor. She asks you to estimate the temperature of the Universe at a time after the Big Bang when neutral atoms could form from the plasma and the Universe became transparent. She tells you that the energy required to excite an atom is on the order of 1 eV. She suggests you use the Boltzmann distribution function e-E/k BT to find the order of magnitude of the threshold temperature at which 1.00% of a population of photons has energy greater than 1.00 eV

find the cost of your paper

How much uranium-235 would be consumed in a fission bomb with a 20-kt explosive yield?

1. How much uranium-235 would be consumed in a fission bomb with a 20-kt explosive yield? 2. A neutron collides elastically head-on with a stationary deuteron in a reactor moderated….

Compare your answer with the 3.6×10⁶ tons of coal needed to fuel a comparable coal-burning power plant

A laser-fusion fuel pellet has mass 5.0 mg and consists of equal parts (by mass) of deuterium and tritium. (a) If half the deuterons and an equal number of tritons….

explore this indirect approach to particle detection by plotting the data in the table below.

1. Your roommate is writing a science-fiction novel set very far in the future, 70 Gy after the Big Bang. One of the characters is a cosmologist, and your roommate….