The sun is the original source of energy
Answer:
The major transition occurred as a consequence of this change in the universe at this time is that <em>b)The universe became transparent to light for the first time.</em>
Explanation:
For the first 380,000 years or so, the universe was essentially too hot for light to shine. The heat of creation smashed atoms together with enough force to break them up into a dense plasma, an opaque soup of protons, neutrons and electrons that scattered light like fog. Then 380,000 years after the Big Bang, matter cooled enough for atoms to form during the era of recombination, resulting in a transparent, electrically neutral gas.
This set loose the initial flash of light created during the Big Bang, which is detectable today as cosmic microwave background radiation. However, after this point, the universe was plunged into darkness, since no stars or any other bright objects had formed yet.
Answer:
third
According to Newton's Third Law, for every action there is an equal and opposite reaction. The player kicks the soccer ball, and the ball “kicks” back, but the player doesn't feel the reaction because the player's leg has more mass and force than the soccer ball.
We are given
m = 4 kg
L = 21 cm
D = 12 cm
Thin-walled cylinder
I think what is asked is the moment of inertia of the cylinder about its axis. The formula is
I = MR²
substituting the given values
I = 4 (12/2)²
I = 144 kg cm²
Answer:
The car's displacement during this time is 25.65 meters.
Explanation:
Given that,
Final velocity of the car, v = 4.5 m/s
Deceleration of the car, 
Let u is the initial speed of the car. It is given by :
u = 12.6 m/s
Let d is the car's displacement during this time. It can be calculated using second equation of motion as :
d = 25.65 meters
So, the car's displacement during this time is 25.65 meters. Hence, this is the required solution.
