4 years ago

Which of the following best describes what we mean by the universe?

Physics

1 answer:

irina1246 [14]4 years ago

7 0

Answer:

D. The sum total of all matter and energy

Explanation:

The universe is defined as a closed system that contains all forms of energy and matter. Therefore, includes the so-called dark matter and dark energy, which make up most of the universe, since ordinary matter would only represent just over 5% of the total.

You might be interested in

PLEASE HELP TIMED

Igoryamba

Radio waves have longer wavelengths and lower frequencies than microwaves.

infrared is longer wavelengths and lower frequencies than UV light

5 0

3 years ago

Read 2 more answers

Isotope A contains 56 protons and 80 neutrons. Isotope B contains 55 protons and 81 neutrons. Isotope C contains 57 protons and

ioda

mass number is defined as sum of number of protons and neutrons

so here for Isotope A