Answer:
1) Recollapsing universe
2) critical universe
3) Coasting universe
Explanation:
According to the smallest ration (ratio actual mass density to current density) to largest ration, rank of models for expansion of universe are
1) Recollapsing universe -in this, metric expansion of space is reverse and universe recollapses.
2) critical universe - in this, expansion of universe is very low.
3) Coasting universe - in this, expansion of universe is steady and uniform
Energy required = Specific Heat × mass × change in temp.
<span>Specific Heat (Cp) water = 4.186kJ/kgC </span>
<span>Mass = 20kg </span>
<span>Change in temperature = 35C - 0C = 35C </span>
<span>Q = 4.186kJ/kgC × 20kg × 35C = 293.02kJ hope this helps! (:</span>
Answer:
Nuclear Fusion
Explanation:
when a star's core collapses, it has no outer layer of resources to use, so it uses the resources inside of it, nuclear fusion is a nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy.
Answer:
<h2>20 kg</h2>
Explanation:
The mass of the rock can be found by using the formula
f is the force
a is the acceleration
From the question we have
We have the final answer as
<h3>20 kg</h3>
Hope this helps you
Answer:
An arch in a memorial park, having a parabolic shape, has a height of 25 feet and a base width of 30 feet.
