Answer:
It's Helium.
Explanation:
The superficial layers of the star compress the core as an effect of its own gravity. Therefore, atoms will be closer to each other in the core, allowing them to be combined.
A nuclear reaction occurs when light elements combine into heavier elements (that is known as nucleosynthesis). Different ways in which that can happen exist, but the most common in the Sun, according to its mass, is the Proton-Proton chain reaction. In that fusion reaction two atoms of Hydrogen are combined to form Helium.
Remember that a Helium atom is composed of two Protons and two Neutrons.
The Proton-Proton chain works in the following way:
+
=
+
+ 
Two Protons combine each other (
) and one Deuterium (
) is gotten, and one Neutrino (
), and one Positron (
) are emitted from them.
+
=
+ 
A deuterium and Proton combine each other and a Helium three nucleus(
) is gotten, and a gamma ray (
) is emitted.
+
=
+
+ 
Two Helium three nucleus combine and a Helium atom (
) is gotten, and two Protons are emitted.
So, when hydrogen atoms fuse together helium is created.
The asker of the second question needs a tutorial in radiometric dating. There is little likelihood that the daughter isotope has the same atomic weight as the parent isotope. To measure the mass isotopes doesn't tell us how many atoms of each exist. To get around that let's pretend — which will likely serve the purpose ineptly intended — that the values give an the particle ratio, 125:875.
<span>The original parent isotope count was 125 + 875 = 1000. The remaining parent isotope is 125/1000 or 1/8. 1/8 = (1/2)^h, where h is the number of half-lives. </span>
<span>h = log (1/8) ÷ log(1/2) = 3 </span>
<span>And 3 half-lives • 150,000 years/half-life = 450,000 years.</span>
Answer:
The current increases when the circuit is closed.
Explanation:
As the complete question is not given, the complete question is attached herewith.
From the data the resistors are connected in parallel and the value of Battery EMF is increased thus as the resistance is decreased and the EMF of the battery is increased, thus the current will increase when the switch is closed.
Hi Pupil Here's Your answer :::
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When an object is moving with uniform circular motion, the centripetal acceleration of the object

.
Because the body is moving with a uniform velocity and hence, there might not be any acceleration due to it.
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Hope this helps .......
i am 2.5 with the thhe 2020 is 3 and 5 is 7