Answer:
C and D
Explanation:
Galaxies are composed of stars, dust and dark matter, all held together by gravity. Astronomers aren't certain exactly how galaxies formed. After the Big Bang, space was made up almost entirely of hydrogen and helium.
From the information provided in the question, the total mass of the nucleons is 60.49218 u.
<h3>What are nucleons?</h3>
The term nucleons refers to both the neutrons and the protons that are found in the nucleus of atoms. We have the following information;
Mass of Proton: 1. 007825 u
Mass of Neutron: 1. 008665 u
Mass of 27 neutrons = 27(1. 008665 u) = 27.233955
Mass of 33 protons = 33(1. 007825 u) = 33.258225
Total mass of nucleons = 27.233955 + 33.258225 = 60.49218 u
Learn more about nucleons: brainly.com/question/9662870
Answer:
A divide is the elevated boundary separating areas that are drained by different river systems
Explanation:
Answer:
1.287m/s
Explanation:
Using the law of conservation of mass expressed as;
m1u1+m2u2 = (m1+m2)v
m1 and m2 are the masses of the objects
u1 and u2 are the velocities
v is the speed of the center of mas of the two carts
Given
m1 = 320g = 0.32kg
u1 = 1.25m/s
m2 = 270g = 0.27kg
u2 = 1.33m/s
Substitute this value into the formula and get v;
0.32(1.25)+0.27(1.33) = (0.32+0.27)v
0.4+0.3591 = 0.59v
0.7591 = 0.59v
v = 0.7591/0.59
v = 1.287m/s
hence the speed of the center of mass of the two carts is 1.287m/s
False. solar comes from the sun while wind energy comes from the wind. hope this helps!