It is likely that the density of the universe is made up mostly of?

1. [1pts] It is likely that the density of the universe is made up mostly of

a. hydrogen

b. electromagnetic radiation

c. dark energy

d. cold dark matter

I'm not sure about this one, is it A or C? Thats what I think, but honestly I have no idea. Please help me out! Thanks!

3 Answers

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  • 4 years ago

    Robert Millikan [a million] carried out test with charged oil droplets in spite of the undeniable fact that it fairly is J J Thompson who easily got here upon the electron and desperate its mass over can charge ratio[2]. electrical energy would not have mass and is being carried by skill of electrons (-) and protons(+). electrical energy does exhibit density as can charge in line with unit quantity or frequently as can charge in line with unit section.

  • 8 years ago

    D enjoy school

  • Anonymous
    8 years ago

    So you have decided to do all your homework by asking it on Y!A?

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