• What does 0.01 mean?

    Does it mean 1mm or 1 micrometer
    Does it mean 1mm or 1 micrometer
    10 answers · 8 hours ago
  • Can a dog on a Tread Mill be used to power your Computer?

    Best answer: i dont think so but you can try it and see
    Best answer: i dont think so but you can try it and see
    12 answers · 2 days ago
  • Can work (W=Fd) be negative?

    10 answers · 1 day ago
  • Is there such a thing as a perfect circle or a perfect sphere in existance?

    surely no matter how "perfect" a circle/sphere appears to be, if you were to zoom in on it enough you would eventually see that it is actually made up of a large number of little straight lines?
    surely no matter how "perfect" a circle/sphere appears to be, if you were to zoom in on it enough you would eventually see that it is actually made up of a large number of little straight lines?
    7 answers · 13 hours ago
  • Would a large amount of force be able to stop a beam of energy?

    So I m debating with a friend about whether or not a large amount of force would be able to stop a large amount of concentrated energy. (Sorry for the example being from MHA) The best example I can think of would be: Would Katsuki Bakugo be able to stop Yuga Aoyama s navel laser?
    So I m debating with a friend about whether or not a large amount of force would be able to stop a large amount of concentrated energy. (Sorry for the example being from MHA) The best example I can think of would be: Would Katsuki Bakugo be able to stop Yuga Aoyama s navel laser?
    5 answers · 9 hours ago
  • What is the rest mass of a photon traveling through water?

    Let v be the speed of this photon, and c the speed of light in vacuum. Because v>0, the photon has some energy E>0. But the photon is traveling through water so v<c. From special relativity we know that E=m0*γ*c², with: m0=photon rest mass γ=1/sqrt(1-(v/c)²) Because v<c, γ>0. But E>0, then... show more
    Let v be the speed of this photon, and c the speed of light in vacuum. Because v>0, the photon has some energy E>0. But the photon is traveling through water so v<c. From special relativity we know that E=m0*γ*c², with: m0=photon rest mass γ=1/sqrt(1-(v/c)²) Because v<c, γ>0. But E>0, then m0>0. But this is impossible because I read that photon rest mass is always 0, so where's my error? Thank you.
    5 answers · 16 hours ago
  • What are all the energy sources?

    Best answer: Fossil fuel: gas, oil, coal

    renewables: biomass, wind, solar, hydro, geo-heat, wind, tide, wave action

    nuclear: fission reactors, fusion reactors (future), radioisotope generators.

    chemical: batteries
    Best answer: Fossil fuel: gas, oil, coal

    renewables: biomass, wind, solar, hydro, geo-heat, wind, tide, wave action

    nuclear: fission reactors, fusion reactors (future), radioisotope generators.

    chemical: batteries
    5 answers · 17 hours ago
  • Is time travel possible?

    Do you think we will ever be able to do this?
    Do you think we will ever be able to do this?
    21 answers · 5 days ago
  • A uniform metre rule is supported at its centre. it is balanced by two weights A and B. If the weights of A and B are 50N and 40N.?

    what is the distance of weight B from the support ? ( distance of weight A and the Pivot are 20cm ) help me, this question doesnt give any diagram!
    what is the distance of weight B from the support ? ( distance of weight A and the Pivot are 20cm ) help me, this question doesnt give any diagram!
    6 answers · 20 hours ago
  • Does the past and future exist simultaneously with the present?

    Best answer: According to relativity theory, simultaneity of events are not absolute in the sense that there is a present moment that all observers agree on. Observers in relative motion do not agree on past, present and future. This is sometimes called Einstein's block universe (research it) In simplified terms, someone... show more
    Best answer: According to relativity theory, simultaneity of events are not absolute in the sense that there is a
    present moment that all observers agree on. Observers in relative motion do not agree on past,
    present and future. This is sometimes called Einstein's block universe (research it)

    In simplified terms, someone moving away from you experiences their present moment to be
    simultaneous with your past. For an observer moving towards you, their present will coincide
    with your future. The present is only simultaneous for observers between which there's no
    relative motion
    But for you, in your own reference frame, only your present moment exists, your past and
    future can only exist for other observers in their own reference frames. The question whether
    the past, present and future are simultaneous is up for interpretation. The entire Universe
    comprises a very large amount of different observers, can we have millions and billions of
    different past, present and future views for one subject? And yet any interpretation is real
    only for one single observer in that particular frame? That seems somewhat ptolemaic.
    The only safe conclusion we can draw from this is that time is not an absolute concept.
    7 answers · 2 days ago
  • Why doesn’t the sun pull other objects than water?

    Best answer: The Sun's gravity pulls on everything. It's just that rocks and buildings are heavier and less likely to move the way that water does.
    Best answer: The Sun's gravity pulls on everything. It's just that rocks and buildings are heavier and less likely to move the way that water does.
    6 answers · 1 day ago
  • If you shoot a bullet into the air, does it come back down?

    Best answer: Yes; of course and people do get killed from this sometimes. That's why it's not smart to shoot off guns in the air like you see sometimes in movies and television or sometimes will see at wedding celebrations in some of your countries in SWA.
    Best answer: Yes; of course and people do get killed from this sometimes. That's why it's not smart to shoot off guns in the air like you see sometimes in movies and television or sometimes will see at wedding celebrations in some of your countries in SWA.
    18 answers · 6 days ago
  • Update. Help I have magnetic earring and for some it got stuck behind. Here is a pic?

    Update. Help I have magnetic earring and for some it got stuck behind. Here is a pic?

    Best answer: I don't know what "and for some it got stuck behind" means. I assume you are not wearing them. Each earring has 2 parts, and each part has a strong magnet. They can need a lot of force to pull apart. They are best stored with the parts separated. You can try: sliding one part over the other,... show more
    Best answer: I don't know what "and for some it got stuck behind" means.

    I assume you are not wearing them.

    Each earring has 2 parts, and each part has a strong magnet. They can need a lot of force to pull apart. They are best stored with the parts separated.

    You can try:

    sliding one part over the other, rarther than pulling (though the side-rods shown in the photo might prevent this)

    using a sharp/thin blade to pry the parts apart (care needed to avoid damage to the earrings and to you!)

    using small pliers or similar tools to get a better grip, then pulling (care needed to avoid damage)

    asking for help from someone with strong hands
    4 answers · 23 hours ago
  • 5 STARS URGENT PLZ?

    an airplane flies horizontally at a constant speed of 155 km per hour and at a height of 225 m pointing to a target At what angle the Mira must aim to hit the target
    an airplane flies horizontally at a constant speed of 155 km per hour and at a height of 225 m pointing to a target At what angle the Mira must aim to hit the target
    4 answers · 2 days ago