The light from the star now visible in the skies of Earth actually left in 1718.
Its size compared to the Sun:
Luminosity:
Luminosity compared to the Sun: 4600 times more than the sun
Law of Physics
The laws of thermodynamics define fundamental physical quantities (temperature, energy, and entropy) that characterize thermodynamic systems. · The first law, also known as Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system. · The second law of thermodynamics states that the entropy of any isolated system always increases. · The third law of thermodynamics states that the entropy of a system approaches a constant value as the temperature approaches absolute zero. Source: Boundless. “The Three Laws of Thermodynamics.” Boundless Chemistry. Boundless, 02 Jun. 2016. Retrieved 09 Aug. 2016 from https://www.boundless.com/chemistry/textbooks/boundless-chemistry-textbook/thermodynamics-17/the-laws-of-thermodynamics-123/the-three-laws-of-thermodynamics-496-3601/
I use this law all of the time in the type of work I do. I do HVAC work. I specialize in refrigeration and heating systems. I use this to fix and repair all types of heating and cooling systems. I also do a lot of mechanical work and this is used in Steam systems and motors. I never thought of this as part of thermodynamics but a meteorologist uses thermodynamics.
Equation Analysis
E= energy (measured in Joules, J) this is a variable M= mass (measured in kilograms, kg) this is a variable c^2=speed of light (measured in meters per second, ms^-1) this is squared this is a constant What is the size of c^2? Answer: Speed of light= 3 x 10^8 m/s^-1 if we square this it is 9 x 10^16 m^2/s^-2 Are mass and energy related? Answer: Yes mass and energy are related because mass converted into energy and vice versa. This is shown more through the Law of Conservation of Mass and Law of Conservation of Energy. If it is possible to change mass into energy a little bit of mass could produce a lot of energy.” Is it true or not? It is possible to turn a little bit of mass into energy. To show why and how we can plug 1kg of mass into the equation e=mc^2 e=1kg*(3*10^8ms^-1)^2=1kg*(9*10^16m^2s^-2)=1*(9*10^16)kgm^2s^-2=9*10^16J This is A LOT of energy from a simple mass of 1kg. This may not be necessarily practical but it shows us how little mass can mean a lot of energy. Is the mass m ever negative? No Is c ever negative? No, this is a constant Can c^2 ever be negative? No Given your previous answer, can mc^2 ever be negative? No Is energy ever actually negative (can something have a negative energy of existence)? No Does energy ever have a direction (is it scalar or vector)? Energy is scalar but energy does not have a direction. Can the negative on the left hand of the equation ever mean a direction of energy? No Some scientists thought that this negative sign was just a mathematical oddity or scrap that had no physical meaning. Why might they think that? Because energy has no direction. Is the negative sign actually meaningless or does this mathematical peculiarity actually mean something? In my opinion it does not mean anything.
Fermi’s Paradox
The Fermi paradox is a conflict between arguments of scale and probability that seem to favor intelligent life being common in the universe, and a total lack of evidence of intelligent life having ever arisen anywhere other than on the Earth. Fermi thought,there are billions of stars in the galxy that are similar to the Sun, many of which are billions of years older than Earth. With high probability, some of these stars will have Earth-like planets, and if the Earth is typical, some might develop intelligent life. Some of these civilisation might develop interstellar travel, a step the Earth is investigating now. Even at the slow pace of currently envisioned interstellar travel, the milky way could be completely traversed in about a million years. According to this line of thinking, the Earth should have already been visited by extraterrestrial aliens. In an informal conversation, Fermi noted no convincing evidence of this, leading him to ask, "Where is everybody? There have been many attempts to explain the Fermi paradox, primarily suggesting either that intelligent extraterrestrial life is extremely rare, or proposing reasons that such civilizations have not contacted or visited Earth.
I have given this alot of thought and believe that if there are more inteligent life out there it could be that they have not yet evolved enough to yet travel or communicate with us yet.
They could already be here and we are not intelligent enough yet to figure it out that they are already here.
Why would they want to communicate with a lesser inteligent life?
We are the first in the galaxy to ever exist.
Reflective writing
I have really enjoyed physics this summer. I have never taken a physics class and wish I would have taken this earlier in my life. I have gained a better understanding of the things around me and how physics is in everything I see, do and hear. I had a very limited understanding of physics and still do. I have enjoyed learning the basics and how physics started out that way and has taken a long time to get to the understanding we have now. I loved learning the history of physics and how the human race has a desire to understand how everything works. I loved how the book took us from one simple question to another to how we came to understand how things work. I loved learning about energy and how we have learned to harness and use that energy. We have such a long way to go to truly understand how to harness energy and make it work in a way we can use and keep us safe from the pollutions that come from the way we produce energy now. I am currently in the Energy management program and have learned how difficult this challenge is and how physics has shown me how hard it is going to be to find a better way for us to produce energy. This class has given me alot to think about and I still struggle with alot of understanding. I have enjoyed learning and wish I could take more time to internalize many of the laws I was able to study. There were several areas I thought I was pretty sharp on and probably did the worst on. I struggled with understanding some of the math equations and have a long way to go before I can truly say I understand physics. This was apparant as I tried to do this signature assignment. I wish I had more time to study and truly understand these princilples. I have learned that we live in a wonderful world and we have so much to learn. I struggled with getting the time needed to study and truly understand these laws and principles.