<span>The role of Carbon in
steel is to increase hardness and tensile strength as well as response to heat
treatment (hardenability). Increased amounts of carbon also reduces
weldability. It is usually present to up to 2% carbon.</span>
Energy in spring:
<span>E = ½k · x²; where x = 0.15m </span>
<span>From coefficient of friction, </span>
<span>F = µ · N = µ · mg; where m = 5kg and g = 9.807m/s² </span>
<span>Work done each pass = </span>
<span>W = ∫Fdx = Force · distance </span>
<span>Just divide E by W to see how many passes, use this to figure out where it stops. </span>
I would say the greatest amount of error is introduced by eyeballing the flask at two different levels. You're supposed to measure liquids at eye level. The angle viewing downward could be off by a good amount
Answer:
The light radiated from the Sun's surface reaches Earth in about 8 minutes. However, the energy of this light was released by fusion in the Sun's core about several hundred thousand years ago.
Explanation:
Nucleosynthesis is the fusion of lighter elements into heavier elements. For the Sun the main mechanism of fusion is the proton - proton chain, in which two hydrogen atoms fuse into helium, in the course of the fusion photons are created.
When those photons start their travel from the core to the surface of the star, they will interact with different atoms in the whole way (the main free path).
More precisely, when a photon¹ is absorbed by an electron in an atom of a particular element, the electron will get to a higher state. When it comes back to the ground state, a photon will be emitted again.
The process described above is repeating multiple times for every photon until they reach the Sun surface.
The whole process can take about several hundred thousand of years.
Key term:
¹Photon: Particle that constitutes light.
Answer:
Rearrange the equation F = ma to solve for acceleration.
You can change this formula around to solve for acceleration by dividing both sides by the mass, so: a = F/m. To find the acceleration, simply divide the force by the mass of the object being accelerated.
Explanation:
