It details 11 profound questions, some of which may be answered within a decade. And if physicists prove protons can decay, the finding will verify the existence of new forces. In addition to being challenging, these questions are fun and interesting. Density. But Einstein's theories do not pay any attention to quantum mechanics, the realm of the extremely small, because gravitational forces are negligible at small scales, and discrete packets of gravity, unlike discrete packets of energy that hold atoms together, have never been experimentally observed. 5 Unanswered Questions that Will Keep Physicists Awake at Night. View The Resource. That suggests that the Big Bang must have created matter and antimatter in equal quantities. Stuck on a tricky physics problem? One of the particle detectors in CERN's Large Hadron Collider. If you are u… The leading dark-matter candidates are neutrinos or two other kinds of particles: neutralinos and axions, predicted by some physics theories but never detected. Each approach has enjoyed some success — techniques developed by string theorists, in particular, are proving useful for tackling certain difficult physics problems. The beam will include neutrinos and antineutrinos, with the aim of seeing if they behave in the same manner — thus potentially providing a clue to nature’s matter-antimatter asymmetry. Recently, the council's committee on the physics of the universe released that report. From general knowledge quiz questions and answers to special interest questions, our team have put together a set of hard trivia questions and answers for pub quizzes, pub games, team games, learning and fun, while most of them might prove difficult to answer, we’ve made it easier by providing answers to each and everyone of them, we hope you’ll have fun reading them. Why dark energy produces a repulsive force field is a bit complicated. Einstein's theories of matter and space-time, which depend upon more familiar benchmarks, cannot explain what caused the hot primordial pinpoint of the universe to inflate into the universe we see today. Alright guys, here am I again with the 'hardest questions compiling thing'. Here's a tale of modern physics: Two scientists work at the same university in different fields. For instance, four hydrogen nuclei (one proton each) fuse through a series of reactions into a helium nucleus (two protons and two neutrons). The first line of evidence for this mystery component comes from measurements of the geometry of the universe. “And the matter and the antimatter annihilated the 10 billion, leaving the one. Weak thermal energy does radiate from around black holes. Full coverage of physics revision questions for the 2018 onwards syllabus. However, many physicists believe that if the three atomic forces are really just different manifestations of a single unified field, the alchemical, supermassive bosons described above will materialize out of quarks every now and then, causing quarks, and the protons they compose, to degenerate. Einstein's general theory of relativity says gravity isn't so much a force as it is an inherent property of space and time. Forces and motion (AQA) questions - … The second line of evidence suggests that the mystery component must be energy. [4] Hence, multiple choice questions are arranged in increasing difficulty (questions 1 and 2 will be the easiest, questions 14 and 15 will be the hardest), but the difficulty level resets for the grid-in section (meaning questions 16 and 17 will again be "easy" and questions 19 and 20 will be very difficult). Why is there more matter than antimatter? AS - Electricity. These evolved into clusters of galaxies, each one brimming with billions of stars. The former is good at explaining the motion of everything from golf balls to galaxies. Pythagoras, for example, set science spinning when he proved that abstract mathematics could be applied to the real world. One studies huge objects far from Earth. One possibility — speculative at this point — is that in addition to the three dimensions of space that we notice every day, there are hidden extra dimensions, perhaps “curled up” in a way that makes them impossible to detect. Therefore, astronomers assume that heavier atoms are minted in supernova explosions, where there is a ready supply of neutrons, although the specifics of how this happens are unknown. Your website access code is located in the upper right corner of the Table of Contents page of your digital edition. Electric fields (AQA) answers. The same must have been true in the dense primordial universe around the time of the Big Bang. Multiple choice exam questions organised by topic with model answers for the CIE IGCSE Physics 9-1 (0972) / A*-G (0625) syllabus. One possibility is that you are looking for the physics exam with the highest requirement of physics knowledge. What is the most difficult concept to grasp in physics? At much larger scales, gravity pulled together huge regions of denser-than-average gas. The idea is highly speculative. CIE IGCSE Physics exam revision with multiple choice questions & model answers for Momentum. Read our privacy policy. Thermodynamics. The enemy ship has maneuvered to within d1 = 2056 m of the h = 1940 m high mountain peak and can shoot projectiles with an initial speed of vi = 243 m/s. Physics; Physics / Scientific methodology; ... (science and physics) paper 1. For several decades now, that weak radiation measured the same wherever astronomers looked at the edges of the universe. How many newtons of force push on your head at sea level? And that is just the sort of marriage of the infinite and the infinitesimal that has particle physicists cozying up to astronomers these days, and why all 11 of these mysteries might soon be explained by one idea. All the extra questions you need to take the separate Physics GCSE are in the Triple science 'Physics GCSE' sections. You've Probably Heard That Coffee Can Stunt Growth. “If you can tell me why the early universe had a low entropy, then I can explain the rest of it,” he says. But when fusion creates elements that are heavier than iron, it requires an excess of neutrons. 1 decade ago. Here’s What It Will Look Like, These Tiny Boats Can Float Upside Down on Levitating Liquid, Does the Butterfly Effect Exist? While warp drive is pure fiction, antimatter is very real. 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