Pw 12: Fill & Download for Free

I think Mohit tyagi channel has better physics lecture than physics wallah i think in both channel explanation are quite similar but abj sir do many advanced level of questions as well as mains level also . The main thing i noticed is that his experience he have idea that which concept is more important and which one not, but there is not huge difference between pw 12 class physics lecture and abj sir but when it comes on chemistry i think pw lecture are nothing. Alk sir taught physical and inorganic at super advance level. Believe me when i give jee mains sep 2 2nd shift all questions of chemical bonding are present in my notes i learn only chemical bonding and periodic table at that time and i manage to attempt all of them with 100% accuracy.

You know, sometimes I feel like I was born to answer questions like this.Let’s start with a few assumptions:All of the energy of the laser is absorbed by the Moon.None of the energy is lost to the atmosphere of the Earth.The light of the laser is spread uniformly across the entire surface of the Moon.These are rather big assumptions, but as it turns out they won’t hurt us by more than an hour or two. Let’s begin, shall we?Hours5mW - nothing happens10 mW - nothing happens20 mW - nothing happens40 mW - nothing happens80 mW - nothing happens160 mW - nothing happens320 mW - nothing happens640 mW - nothing happens (and that’s it - no one will ever need more than 640 mW. I couldn’t resist)1.28 W - nothing happens2.56 W - nothing happens5.12 W - nothing happens10.24 W - nothing happensHalf a day has passed, and we’ve got a laser that, if you put your hand in front of it, would very badly burn your hand:20.48 W - nothing happens40.96 W - nothing happens81.92 W - nothing happensThis laser will burn you from quite a distance163.84 W - nothing happens327.68 W - nothing happens655.36 W - nothing happens1.3 kW - nothing happens2.6 kW - nothing happens5.2 kW - nothing happens10.5 kW - nothing happensThis laser will burn stone21 kW - nothing happens42 kW - nothing happensA day has passed. We’re in the range of the Navy’s laser weapon which apparently maxes out at around 30 kW. These can set boats on fire from a significant distance. If the entire moon were illuminated with 42 kW, we would not be able to see it. Moving on84 kW - nothing happens168 kW - nothing happens336 kW - nothing happens671 kW - nothing happens1.3 MW - nothing happensWe have passed 1 MW, which puts us in the range of long-distance missile destroying lasers2.7 MW - nothing happens5.4 MW - nothing happens10.7 MW - nothing happens21.5 MW - nothing happens42.9 MW - nothing happens85.9 MW - nothing happens171.8 MW - nothing happens343.6 MW - nothing happens687.2 MW - nothing happens1.37 GW - nothing happens2.75 GW - nothing happens5.50 GW - nothing happens11 GW - nothing happens22 GW - nothing happens44 GW - nothing happens88 GW - nothing happens176 GW - nothing happens352 GW - nothing happens704 GW - nothing happensWe are now at the National Ignition Facility - the most powerful laser array in the world. The surface area of the Moon is 3.79 E 13 square meters, but we’re only hitting half of that, so we’re at around 19 trillion square meters of land. We’ve covered the surface with 37 mW/m^2.1.4 TW - nothing happens2.8 TW - nothing happens5.6 TW - nothing happens11.3 TW - nothing happens22.5 TW - nothing happens45.1 TW - nothing happens90.1 TW - nothing happens180 TW - something happensWe can actually start to see the laser light on the moon. Barely360 TW - brighter721 TW - brighter1.44 PW - We’re at 184 W/m^2. This is less than what sunlight pumps out (roughly 1/10th) but it’s decidedly visible.2.88 PW - brighter5.76 PW - brighter11.52 PW - The result of our laser pointer is that the Moon looks as bright as it would under sunlight.23.04 PW - brighter46.08 PW - brighter92.16 PW - brighter184.32 PW - brighter368.64 PW - brighter737.28 PW - brighter1.5 EW - very brightWe’re nearly to 3 days, and the moon is getting rather bright indeed.3 EW - very bright6 EW - very bright12 EW - very bright24 EW - very bright48 EW - very bright96 EW - painful to look at192 EW - very painful to look at384 EW - as bright as the sun768 EW - extraordinarily bright - things begin burning1.54 YW - we’re at Yottawatts, and we’re almost at the end of the road. This is 1.54 E 24 W, or a 1, a 5, a 4, and 22 zeros. The Moon is so bright that the organic material on the surface of the Earth is rapidly burning. Normally, I’d have called an Everyone Dies™ a bit sooner - probably at around hour 70 we start getting significant climatic changes. But since the laser is increasing in power so quickly, those changes don’t have time to kill us all. But at a yottawatt (damn that’s fun to say. Try it!), even the air starts to burn. The nitrogen and oxygen gases start combining to form toxic nitrogen oxides. Forests and grasslands are ablaze, and people would have to huddle in caves or in submarines. But they could survive a bit longer. Let’s say a few humans hide in a submarine.3 YW - lakes and ponds start boiling.6 YW - oceans start boiling near the equator12 YW - There is no more ice, and the land is starting to melt.24 YW - The oceans are rapidly boiling off and the atmosphere is thick with water vapor and radicals from split water.The volume of the oceans is 1.37E24 cubic centimeters. It takes 1 calorie (just over 4 Joules) to raise the temp of that water 1ºC. The Moon is bathing the earth in 2.4E25 watts, meaning that there is enough energy to raise the temp of the oceans about 17.5ºC. Now, much of the energy would be absorbed by the land, but the oceans are not long for this Earth.48 YW - ocean temperatures are like bathwater.96 YW - ocean temperatures are like soup.192 YW - the oceans begin to boil384 YW - the oceans are boiling.Everyone Dies™ - even despite our best efforts, hiding in deep ocean trenches or near the poles, we’re cooked. The Earth has no air, the rocks are melting, and the Moon is starting to vaporize…and move away from us. Randall Munroe did a fine job describing this here: Laser Pointer but, amazingly, he did not account for the fact that the Moon, glowing at these enormous temperatures, would kill us long before the Moon could flee in terror.Pleasant dreams. Everyone Dies™

Unfortunately the beginning of the end of a loving relationship was before I had even got engaged to PW and yet I still got engaged to him and married him six months later. I couldn’t really afford to leave him until years later when we came to Australia and a gut feeling told me then I could GO. Hippy/Christian people helped me, one a recovering addict. I found a dwelling to rent in an old weatherboard house that was divided into three dwellings, and I found work. I was on the lowest of incomes but I managed.Anyway back to the beginning, we had only been together 2 months and he suddenly informed me not to expect him to rescue me if anyone ever attacked me as he would run away. This was a very odd, sudden announcement, I simply didn’t believe him as he was tall, dark, fit and handsome. I couldn’t imagine him running away. The next clue was when a doctor flatly refused to believe I was a chronic asthmatic and coldly told me she thought I was a chronic smoker and to give up smoking. I asked PW, as I Refer to him now, to come back to the doctor with me to tell her I was coughing and wheezing all the time and to basically back me up on this. He scornfully refused. A few months later I was heading to university and I had a sudden bad asthma attack. My only thought was to get home to PW hoping he would take me to a doctor who would help. I had joined PW in Auckland, from a much smaller town, and Auckland was a strange place to me. I was like a fish out of water. I was used to small towns and smaller cities where people were decent and helped. PW yelled at me and declared he would punch me in the throat when I told him I was struggling for breath. I blacked out and in a kind of out of body state I was flying around with angels with colourful wings. I woke next morning breathing normally. This should’ve been the day I left. However PW actually proposed to me not long after and I accepted, in a numbed sort of way, the only reason being that PW was quiet and studious most of the time while anyone else I knew or was related to biologically were mostly noisy and arguing, or yelling or complaining, with no concern for me. At least PW was educated, to post graduate level, and most of all he was generally quiet.We married in a small chapel set in a park like a woodland with groves of trees. On my way to the wedding rehearsal my knees suddenly gave way and I had to sit on the grass under a tree until my fainting fit passed. I had a dreadful sense of foreboding and a throbbing headache.Except for my religious brother no one from my family attended my wedding as they had no interest in me. I was the youngest and my siblings had all left home by the time I was 12. My religious brother didn’t help our relationship by preaching in his usual out of control and insulting way at the wedding. My brother is a control freak and is as callous as PW except when he is soft talking people to join his religion. PW had an idyllic middle class family in a green, leafy suburb on the North Shore near a pristine beach. It was like a dream to stay at his family home but his brother was rude to me.Anyway our marriage kind of limped along. We went to London in the UK where we worked and studied and travelled. I felt I had actually progressed simply by escaping from my family and from New Zealand by marrying PW. I got proper treatment for my allergies once I’d reached London which helped incredibly with my sense of well being. For a few years PW and I just kind of lived our lives quite peacefully, in a routine of commuting to work, commuting to our places of study, travelling and rambling around in the weekend. PW left home before I woke, each day, and came home after I’d gone to bed. I didn’t mind. A lot of wives would’ve been heart broken but my family hadn’t given me much attention and the high school I went to was very dreary too. I enjoyed my quiet routines and study. Luckily I kept reasonably well until one day everything came to a kind of critical mass. I came home feeling terribly unwell, suffering from I don’t know what as PW of course did not get a doctor for me. His brother was visiting and PW was offering me sexually to his brother while I was lying in bed, unwell, floating outside my body. All I can say about this illness is that it may have been an acute, very serious urinary infection, or a bad allergic reaction and on top of that I remembered I had accidentally overdosed on a strong medication for allergies that is on a banned list now. I had a kind of Near Death Experience and came out of it a few days later having lost kilos. I was very pale and light headed and thin, but I felt spiritually very strong. I could not afford to leave PW and I was not returning to my crazy family who had even less interest in me than PW. Actually PW offered to send me back to my family in NZ. My family were even less concerned about me than PW and crazier, stupid and forever quarrelling and complaining. It would be going from frying pan into fire to return to my family in NZ. I refused. So PW and I saved and went to Australia. Once we’d arrived in Sydney, a gut feeling told me I could leave PW now and I did. Actually later he told me he had been planning to divorce me but I left first which suited him. He had set everything up for a long time so he could blame me for everything to his parents. For some odd reason some people, such as PW, think allergies are similar to drug addiction and that my medication for allergies is like an illegal drug. Once I had left PW I got a job and a place to live, in an old house near a beach. I was on a very low income but food, fresh fruit and vegetables, and take away chicken etc, was very cheap back then in the 1980s. It was like heaven to be away from both family and from PW. I loved roaming around in sunshine and sea air on the beach. Even though I was so poor I felt as if I were in paradise being alone and free in such a beautiful place.Funnily enough, after I had got a well paying job, PW wanted to come back. He had returned to Auckland in New Zealand. I think he just wanted a place to live in Australia. I turned him down. Anyway as far as I’m concerned our relationship was over before it had even began after he acted so callously when I was suffering badly from asthma. The trouble was I had no options available to me when I was living in New Zealand and I could not find a doctor to treat my asthma. The prevailing attitude in New Zealand was against me in the attitude that wives had a duty to accept callous attitudes and domestic abuse from their husband, and, when younger, from teachers and doctors or counsellors. My father had been callous towards my mother and my family were indifferent to me. My family liked children but rejected teenagers and young adults.luckily I ended up owning a Villa and I worked until retirement. I didn’t risk getting married again. It is very sad though that love must die before it has ever begun. I enjoy writing and art work and have a spiritual faith. A hard path taught me to be contented alone, to keep active with many creative interests, and to seek a spiritual faith.