The more baryons there are in the universe (a higher density of baryonic matter), the lower the ratio of deuterium to hydrogen is. therefore, if harry measures a higher ratio of deuterium to hydrogen than sally, harry infers:
a) the same density of baryons as sally.
b) a lower density of baryons than sally.
c) a higher density of baryons than sally.

explanation:

a fuel engine ( known as a gasoline engine in american english )is an internal combustion engine with spark ignition, designed to run on petrol (gasoline) and similar volatile fuels.

answer: i'm not sure which is which for i get confused on it all the time but i can tell you that the answer lies with the convex and concave devices. i hope this you. have a good day and best of luck to you!

explanation:

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s