The life cycle of stars may be boiled down into a tug of war, lasting billions of years, between two basic forces. In your own words, describe these forces, and identify which of the two eventually "wins" the battle.
Answer:
Stars are very massive stellar objects, which means that they have a very intense force of gravity. This is the first of the forces entering this "war".
In addition to that, due to the force of gravity that drives the star to contract, the process known as fusion occurs (the union of atoms of one element that results in another element, hydrogen fuses in stars to produce helium). The fusion created in the high temperatures of the center of the star generates an enormous amount of energy (which causes the stars to shine) and a force going outward of the star counteracting gravity, this is the second force in the "war" .
In a stable star these two forces (gravity going inward and the pressure created by the fusion going outward ) are in balance, preventing the star from exploding or collapsing. But eventually the star exhausts its "fuel" (hydrogen atoms) to produce fusion within it (although stars also fuse helium and other heavier elements, but once the hydrogen is finished the star is near its end), which decreases the force outward from the star, making the force that wins this battle to be the force of gravity.
When the force of gravity wins, the star collapses on itself and from here, depending on the star's mass, several things can happen, such as the star becoming a white dwarf, a supernova, even a black hole.
The life cycle of stars may be boiled down into a tug of war, lasting billions of years, between two basic forces -
Pressure due to fusion reactions pushes outwards.Gravity pulls inwards to keep the star in equilibrium.And gravity wins the battle in the end.Stars are very massive stellar objects and remain the longest in the stage when it is burning Hydrogen into Helium.
Stars have a very intense force of gravity that drives the star to contract, the process known as fusion occurs.Due to fusion, high temperatures of the center of the star create an enormous amount of energy and a force of pressure going outward of the star counteracting gravityGravity going inward and the pressure created by the fusion going outward is in balance, preventing the star from exploding or collapsing.Due to exhausting hydrogen atoms, fusion stops eventually and it decreases the force outward from the star, making the force that wins this battle to be the force of gravity.Thus,
The life cycle of stars may be boiled down into a tug of war, lasting billions of years, between two basic forces -
Pressure due to fusion reactions pushes outwards.Gravity pulls inwards to keep the star in equilibrium.And gravity wins the battle in the end.Learn more:
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can someone tell me the answer for both of these pleaseeee i need it asap!!! i will give brainlist!!
Answer:
1/ decreases
2/ yes;
In general there is no relationship, and any combinations of frequencies and amplitudes are allowed.
Explanation:
Explanation for 1/ - please see the picture attached below
A popcorn-maker transfers 250 J of energy into other energy stores every second. What is its power?
Answer: 250 watts
Explanation:
energy=250J
Time=1 sec
Power=energy ➗ time
Power=250 ➗ 1
Power=250
Power is 250 watts
According to the question,
Energy,
250 JTime,
1 secondThe formula,
→ [tex]Power =\frac{Energy}{Time}[/tex]
By substituting the values, we get
[tex]= \frac{250}{1}[/tex]
[tex]= 250 \ Watts[/tex]
Thus the above approach is right.
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2. A disturbance that generates a wave may be a simple pulse or shock.
b. False
a.
True
That's true.
-- a bell starts ringing (wave) when you tap it (simple pulse)
-- a pond starts rippling (wave) when a stone drops in (simple shock)
-- a guitar strings starts waving when you pluck it
Uranium-235 has 92 protons. How many neutrons does it have?
Answer:
146 neutrons.
Explanation:
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Answer: The atomic number of uranium (see periodic table) is 92, and the mass number of the isotope is given as 238. Therefore, it has 92 protons, 92 electrons, and 238 — 92 : 146 neutrons.
Explanation:
explain nuclear fusion briefly
Answer:
Nuclear fusion is the process in which two atomic nuclei are fused together into a larger single nucleus, releasing energy in the process. ... In proton-proton fusion, four hydrogen atoms are fused into a single helium-4 atom, releasing a lot of energy in the process.
Explanation:
What are the pros and cons of nuclear fission
Answer:
Low Greenhouse Gas Emissions. ...
High Power Output. ...
Inexpensive Electricity. ...
Nuclear Energy Doesn't Rely on Fossil Fuels. ...
Economic Impact. ...
Back-end Environmental Impact. ...
Past History of Nuclear Accidents. ...
High Up-Front and End Stage Cost.
A thug pushes some 100 kg punk with 300 N of force. How much is the punk accelerated?
Answer:
Acceleration generate by punk = 3 m/s²
Explanation:
Given:
Weight of punk = 100 Kg
Force applied on punk = 300 N
Find:
Acceleration generate by punk = ?
Computation:
Acceleration = Force / Mass
Acceleration generate by punk = Force applied on punk / Weight of punk
Acceleration generate by punk = 300 N / 100 Kg
Acceleration generate by punk = 3 m/s²
what is the function of strong nuclear forces
Answer:
The strong force binds quarks together in clusters to make more-familiar subatomic particles, such as protons and neutrons. It also holds together the atomic nucleus and underlies interactions between all particles containing quarks
Explanation:
PLEASE GIVE ME BRAINLIEST IF NEW IT SHOULD SAY MARK AS BRAINLIEST IF NOT YOULL HAVE TO WAIT A DAY AND BRAINLY WILL REMIND YOU
4. The batteries on electric vehicles are recharged using electricity from either a wall socket or dedicated charging
unit.
A) O True
B) O False
Answer:
Hey!
Your answer is A) TRUE!
Explanation:
The electricity in this instance is called "grid-electricity" because it has come from a generation plant elsewhere instead of recharging the batteries via Kinetic/Potential energy...
How does the current values in and out of the battery compare to the sum of currents going through the light bulbs?
Note: This is for Parallel circuits.
Only refer from the community conservation article please. Will mark brainliest!!!!
1. Summarize the scientific information that leads to conservation in each of the articles.
2. What social issues affected the problem or its solution in each of the stories?
3. How did economics delay scientists' first attempts for conservation in each story?
4. Describe the political actions that led to successful conservation in both stories.
Trees are being felled at an alarming rate by people. Forests are home to numerous animals and people, and by removing trees from them, we are destroying their habitat and depriving them of a safe haven.
What is community conservation?Community conservation refers to a strategy for protecting the environment that acknowledges local residents' rights to manage wildlife or gain both direct and indirect benefits from it.
The gorillas' habitat, the forest, is being destroyed by humans. Additionally, people are harming these creatures, and if this continues, gorillas may become extinct.
There won't be as many resources from trees, like paper, if people cut down less of them, therefore prices could rise.
Prices for tourists will increase if fewer gorillas are still alive. That won't benefit visitors since they will have to pay more, and since some individuals don't have a lot of money, there will be fewer visitors.
Thus, this way, community conservation is mandatory.
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#SPJ2
Which of the following are two factors that determine speed?
a. acceleration and time
b. distance and time
c. velocity and time
d. motion and time
Answer:
B) Distance and Time
Explanation:
Equation for speed: S = D / T
Speed equals the distance you traveled divided by the amount of time it took to get to that destination.
The two factors which are required to determine the speed of a object are distance traveled by it and time taken by it.
What is speed?The speed is the rate at which the total distance by a object is traveled in the time taken.
Speed of a object can be given as,
[tex]s=\dfrac{d}{t}[/tex]
Here, (d) is the distance traveled by the object and (t) is time taken but the object to cover that distance.
As the unit of the distance is measured in the meter and the time measure in the second. Thus the speed of a object is measured in the meter per second.
In the vehicles the speed of vehicle is also measured in the kilometre per hour or miles per hour.
Hence, the two factors which are required to determine the speed of a object are distance traveled by it and time taken by it.
Thus the option B is the correct option.
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you drop a rock off of a cliff, and it hits the ground 8.1 seconds later. how tall is the cliff?
Answer:
the answers is 321 m
Explanation:
here's a picture of it
What major purposes do barrier islands serve?
Answer:
Barrier islands serve two main functions. First, they protect the coastlines from severe storm damage. Second, they harbor several habitats that are refuges for wildlife.
Explanation:
Intro to Springs and Hooke’s law
En un proceso isobárico, la presión del gas es de 105 Pa. Halle el desplazamiento del pistón, cuya área es de 0,4 m2, cuando el gas desarrolla un trabajo de 8 x 104 J
Answer:
The displacement of the piston is 1904.76 m
Explanation:
Here we have an isobaric or constant pressure process, therefore;
Work done, W = P × (V₂ - V₁)
Where:
W = 8 × 10⁴ J
P = Pressure of the gas = 105 Pa
V₁ = Initial volume of the cylinder of the piston
V₂ = Final volume of the cylinder of the piston
We note that volume of the cylinder of the piston = Base area, A × h
Therefore;
V₁ = A × h₁
V₂ = A × h₂
Which gives;
V₂ - V₁ = A × h₂ - A × h₁ = A×(h₂ - h₁)
Where:
A = Base area of the piston = 0.4 m²
h₂ - h₁ = Displacement of the piston
∴ 8 × 10⁴ J = 105 Pa × (V₂ - V₁) = 105 Pa × 0.4 m² × (h₂ - h₁)
h₂ - h₁ = (8 × 10⁴ J)/(105 Pa × 0.4 m²)
h₂ - h₁ = 1904.76 m
Hence the displacement of the piston = 1904.76 m.
what is polarization
What might be collected to monitor the amount of excess nitrogen in the local water system
Answer:
If excess nitrogen is found in the crop fields, the drainage water can introduce it into ... have aquifers that can supply a lot of freshwater very near the land surface.
How do catalysts and inhibitors affect reaction rates
Please I'm in desperate help
Answer:
You know that catalysts lower the activation energy required for a reaction to occur. With the activation energy lower, the products can also combine more easily. Therefore, the forward and reverse reactions are both accelerated. It changes both rates and usually changes the equilibrium point.
Explanation:
hope it helps
(x) A change in position is called:
(a) Speed
(b) velocity
(c) displacement
(d) distance
Answer:
(c) displacement
sure answer...
Hope it helps....Pls mark as Brainliest!!!
A 1 kg ball is rolling at 3 m/s.
Answer:
It will roll 9 meters in 3 seconds
Explanation:
3 m/s times 3 is 9
Thanks for warning me.
I'll be careful to stay out of its way.
Do you have a question to ask ?
When steam condenses
a. it changes from the gas phase to the liquid phase.
b. it gives off heat.
c. molecules move closer together.
d. all of the above occur.
Answer:
all of the above?
Explanation:
I think that is
why are fuels from crude oil so widely used for transportation
What are the three types of sea ice and why is each important?
Answer: New Ice, Nilas, and young ice.
Explanation:
New ice is recently frozen sea water that does not yet make up solid ice.
Nilas is an ice that bends without breaking around waves and swells.
Young ice is a transition stage between nilas and first-year ice.
If this inclined plane moves 3 cm to the left how high will it lift the object
Answer:
It would lift the object to the same height than before you move it 3 centimeters to the left. You see, the height doesn't change if you move the inclined plane horizontally, because height is a vertical variable.
Therefore, if the inclined plane has a height of 1 meters, then the object will be lifted 1 meters up, no matter if you move the inclined plane 50 meters horizontally, it won't change its height.
Rafael swings a baseball bat with a force of 25 N. The baseball bat exerts a force of 5 N on the baseball. What is the mechanical advantage of the baseball bat? The mechanical advantage of the baseball bat is
Answer:
0.2
Explanation:
Mechanical Advantage is defined as the ratio of force output with respect to the force input. Thus,
MA = output / input
MA = 5 / 25
MA = 1/5
MA = 0.2
Since this value is less then one. Even though it's tagged a mechanical advantage, in reality it would be mechanical disadvantage.
Therefore, we can say that the mechanical advantage of the baseball bat is 0.2
Answer:
0.2
Explanation:
Which structure connects muscles to bone?
Answer: tendons connect muscles to bones
Explanation:
if the 50 kg objects slows down to a velocity of 1 m/s how much kinetic energy does it have?
Answer: 25
Explanation:
The kinetic energy of the object moving at the given mass and velocity is 25 J.
The given parameters;
mass of the object, m = 50 kgvelocity of the object, v = 1 m/sThe kinetic energy of the object moving at the given mass and velocity is calculated as follows;
K.E = ¹/₂mv²
K.E = ¹/₂ x 50 x 1²
K.E = 25 J
Thus, the kinetic energy of the object moving at the given mass and velocity is 25 J.
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Which of the following planets has a diameter that is larger than the diameter of the Earth?
Answer:
Jupiter
Explanation:
Jupiter is the largest planet in our solar system and is about 11 times larger than earth.
