13 Chicago is 59 miles from the opposite shore of Lake Michigan. Given the earth’s curvature, it should be 2320 feet below the horizon. How can it be seen?

14 Why is a refrigerator's door magnetic? Is it part of the cooling system, or part of the norm for some other reason?

15 If Newton and Einstein had a debate on gravity, who would win?

16 If there is no friction in space, would we not achieve lightspeed with one long burst or even multiple bursts of propulsion?

17 How did physicists realize that linear algebra would prove to be highly useful in the study of quantum mechanics? Did they just try various types of math to see what might work? What would have happened if none of them had studied linear algebra?

18 What did Werner Heisenberg mean when he said, “The first gulp from the glass of natural sciences will turn you into an atheist, but at the bottom of the glass God is waiting for you”?

19 Did Feynman ever say he tried to derive relativity himself and couldn't understand how Einstein did it?

20 Atoms have been visualized, and they have a round shape, as predicted. Do you think smaller particles like neutrons, electrons, and various others will ever be visualized?

21 If a person weighs 200 lbs at the North Pole (where there is zero rotational speed), why do they still weigh exactly 200 lbs at the Equator where the Earth is spinning at 1,000 mph? Where is the centrifugal lifting force?

22 Could a person wrapped in enough bubble wrap survive a fall from an airplane?

23 How fast would a high-quality spring degrade if it were compressed and decompressed 800 times per minute?

24 How could Richard Feynman have been such a great physicist and done so phenomenally well on the Putnam competition and yet still have an IQ score of only 125?

25 What are the coolest physics behind everyday items?

26 Why is Paul Dirac the greatest physicist ever?

27 If a man walks from the cool pole of Mercury in spacesuit towards the equator, when does he experience total meltdown where temperature will cook him and how quickly does the change occur?

28 Is it really true that sounds can't exist above 194 dB? Why is that limit the max for sound intensity?

29 When a car hits you from the right, why does your body go to the right?

30 Which universities have the most rigorous undergraduate physics curriculum? I’ve heard that students from Russian universities are extremely well-equipped to handle graduate school. Is there any truth to this? How do other top universities compare?

31 In the vacuum of space, radiant heat can't go anywhere because there is nothing to carry it away. On the moon, wouldn't the astronaut's boots be like particles in an atmosphere and take the heat?

32 If electrons move so slowly in a wire, why do lights turn on instantly?

33 Why don't birds get electrocuted sitting on power lines?

34 What makes the coin rotation paradox so mind-boggling, and why do so many people, even experts, get it wrong?

35 What is the difference between a boson and higgs boson, is a boson related to bose-einstein condensate?

36 What is a Hohlraum used for?

37 Why is Einstein considered one of the best physicists when relativity is one of the least important and easiest fields in physics?

38 What are the most interesting facts about 9/11?

39 If you turn on a flashlight in Interstellar space, would the light propel the flashlight backwards? If so, what's the maximum speed it might achieve?

40 What is the maximum theoretical speed limit of a bullet?

41 What did Albert Einstein do at Princeton University? What was a typical day like?

42 Why are engines measured in horsepower? Why not bears, cheetahs, and sharks?

43 How important was Richard Feynman’s work?

44 What role did Richard Feynman play at Caltech?

45 Why does an electron spin 1/2 need two full rotations instead of one to return to its original state?

46 How did Cooper survive the gravitational pull of the black hole in the movie “Interstellar”? Shouldn’t his spaceship have dismantled due to that force?

47 If a newborn baby could accerate away from earth at 1G (so they could also live in a normal gravitational environment) for a 100 year lifespan, how many earth years would pass across their life due to time dilation?

48 In mathematics, it is possible to calculate problems in infinite dimensions. Is this just another failure of logic or might this be useful for anything other than giving students a headache?

49 Is a long rope weaker than a short one?

50 Can anything survive passing through the event horizon of a black hole? How does this process occur?

51 Who is the next Einstein in physics?

52 Why don’t skyscrapers collapse in on themselves due to their immense weight?

53 Which is the most used physics law that is likely to be broken in the near future?

54 What is considered the greatest mistake in the history of physics?

55 If you fell from a plane or from any great distance and landed in a deep pile of pillows, would you survive?

56 Why hasn't the world had another Einstein? It's been over a hundred years since the theory of relativity and the closest we have had is Hawking.

57 Pi is irrational so does that mean it’s impossible to draw a line that’s exactly pi centimetres long?

58 Is Paul Dirac the best physicist ever?

59 If they could make a rocket in space spin like a bullet, would that create imitation gravity?

60 Could quantum theory be potentially a bunch of nonsense or could any parts of it be nonsense?

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