Evidence that the cosmic background radiation really is the remnant of a big bang comes from predicting characteristics of remnant radiation from the big bang and comparing these predictions with observations. four of the five statements below are real. which one is fictitious?
a) the cosmic background radiation is expected to have a temperature just a few degrees above absolute zero, and its actual temperature turns out to be about 3 k (actually 2.7 k).
b) the cosmic background radiation is expected to have a perfect thermal spectrum, and observations from the cobe spacecraft verify this prediction.
c) the cosmic background radiation is expected to contain spectral lines of hydrogen and helium, and it does.
d) the cosmic background radiation is expected to look essentially the same in all directions, and it does.
e) the cosmic background radiation is expected to have tiny temperature fluctuations at the level of about 1 part in 100,000. such fluctuations were found in the cobe data.

Neutrons are placed in a magnetic field with magnitude 2.30 t. part a part complete what is the energy difference between the states with the nuclear spin angular momentum components parallel and antiparallel to the field? δe δ e = 2.77×10−7 ev previous answers correct part b part complete which state is lower in energy: the one with its spin component parallel to the field or the one with its spin component antiparallel to the field? which state is lower in energy: the one with its spin component parallel to the field or the one with its spin component antiparallel to the field? parallel antiparallel previous answers correct part c part complete how do your results compare with the energy states for a proton in the same field (δe=4.05×10−7ev)? how do your results compare with the energy states for a proton in the same field this result is smaller than but comparable to that found in the example for protons. this result is greater than but comparable to that found in the example for protons. previous answers correct part d the neutrons can make transitions from one of these states to the other by emitting or absorbing a photon with energy equal to the energy difference of the two states. find the frequency of such a photon. f f = mhz previous answersrequest answer incorrect; try again; 5 attempts remaining