• How far does a cord reach?

    Best answer: never quite enough to activate something
    Best answer: never quite enough to activate something
    10 answers · 2 days ago
  • Why do scientists(especially astronomers and physicians) usually prefer to use the way “a * 10^n “to express numbers in their studies?

    Rather than using words like million, billion, trillion
    Rather than using words like million, billion, trillion
    7 answers · 2 days ago
  • What does dipole mean, like electric dipole or magnetic dipole?

    Best answer: "di" means two. So dipole is two poles. An electric dipole has positive and negative poles. For magnets, we call them north and south.
    Best answer: "di" means two. So dipole is two poles. An electric dipole has positive and negative poles. For magnets, we call them north and south.
    4 answers · 7 hours ago
  • The space-time-bus ride?

    Best answer: the magic school bus
    Best answer: the magic school bus
    8 answers · 3 days ago
  • What makes a body move with constant speed around a circle?

    Best answer: "What makes a body move with constant speed around a circle?" A constant magnitude resultant force directed towards the centre of the circle (so the force acts radially inwards, always perpendicular to the direction of the body's instantaneous velocity). The force is referred to as the centripetal... show more
    Best answer: "What makes a body move with constant speed around a circle?"

    A constant magnitude resultant force directed towards the centre of the circle (so the force acts radially inwards, always perpendicular to the direction of the body's instantaneous velocity).

    The force is referred to as the centripetal force.
    5 answers · 9 hours ago
  • Do you believe there are infinite world of infinite possibilities?

    Best answer: The many worlds interpretation of quantum mechanics - all possiblities occur in an ever expanding decision tree (whether conscious choice or environmental interaction) is one of many possible reality interpretations of quantum mechanics. It is popular because it avoids some of the conceptual difficulties such as... show more
    Best answer: The many worlds interpretation of quantum mechanics - all possiblities occur in an ever expanding decision tree (whether conscious choice or environmental interaction) is one of many possible reality interpretations of quantum mechanics. It is popular because it avoids some of the conceptual difficulties such as wave function collapse, indeterminacy, etc. Howver, there is not a shred of evidence that it occurs even at the quantum level. Any one of the other reality explanations of quantum mechanics may be correct and they do not require ‘many worlds’.

    At a more realistic level, it has always been a thorn in the side of quantum mechanics to explain why the macroscopic world doesn’t show quantum behavior which we KNOW occurs in experiments at the atomic level. Decoherence is the usual explanation. A macroscopic object cannot be insulated from environmental interaction like a sub-atomic particle. This is like tossing two rocks in a pond and seeing clear interference of the two waves vs dumping a million rocks in the pond and seeing something totally different. There also can be internal interactions that results in decoherence of quantum effects. It’s also been proposed that once an object gets to a particular size, gravity will cause decoherence.

    The bottom line is that many worlds is just an idea to explain away some of the problems with our understanding quantum reality. No evidence supports it.
    13 answers · 5 days ago
  • Do the four fundamental interactions explain every interaction between matter in the universe?

    Best answer: no, they do not explain the increasing repulsion between galaxies, now attributed to "dark energy".
    Best answer: no, they do not explain the increasing repulsion between galaxies, now attributed to "dark energy".
    5 answers · 2 days ago
  • Help with physics? Will reward best answer!!?

    Best answer: Johny, First, you have to realize that when you pull back the swing, you're actually lifting it higher than it's resting position. The difference in height represents potential energy because the swing can now fall back to its resting position. At the rest position all that potential energy you stored in... show more
    Best answer: Johny, First, you have to realize that when you pull back the swing, you're actually lifting it higher than it's resting position. The difference in height represents potential energy because the swing can now fall back to its resting position. At the rest position all that potential energy you stored in the swing by lifting it will be transformed to kinetic energy. So what you must first do is figure out how high the swing was lifted. You use trig to do that. One leg of the triangle formed by lifting the swing is the initial length of the swing's support (1.85 meters). You can find the adjacent leg by using the angle (37.8 degrees) and assuming you're forming a right triangle. I did the calculation and I found that the adjacent leg to the swing length is 1.46 meters. The difference between these legs is the height you've raised the swing which comes out to be 0.39 meters.So the swing will fall a distance of 0.39 meters. Now the potential energy stored in the swing is mgh, and that's equal to the kinetic energy it will obtain by falling. We can equate these two and get:
    mgh = 1/2mv^2.........and, as you can see, we can eliminate the mass from each side of this equation which gives us:

    gh = 1/2 v^2. and v will = sq. rt. of 2gh. That comes out to be 2.76 m/sec.

    I hope this helps. I tried to make this as clear as I can.
    4 answers · 15 hours ago
  • An ant needs to travel along a 20cm × 20cm cube to get from point A to point B. How long will it be?

    An ant needs to travel along a 20cm × 20cm cube to get from point A to point B. How long will it be?

    Best answer: Along the side upward and then along the diagonal on the surface.
    Side a = 20 cm.
    Diagonal = √(2a) = 28.28
    Total = 48.28 cm (PS: The shorter route mentioned by @Samwise is as in the diagram below- BA)
    Best answer: Along the side upward and then along the diagonal on the surface.
    Side a = 20 cm.
    Diagonal = √(2a) = 28.28
    Total = 48.28 cm (PS: The shorter route mentioned by @Samwise is as in the diagram below- BA)
    5 answers · 2 days ago
  • Is Einstein mass increase equation an equation that really represents reality?

    Best answer: Sometimes Einstein made gross exaggerations in order to have formulas that would demonstrate the math.
    Best answer: Sometimes Einstein made gross exaggerations in order to have formulas that would demonstrate the math.
    6 answers · 2 days ago
  • How fast does water absorb into a material?

    As a towel for example, How fast would you have to put it in and out of water so that the towel does not absorb any of the liquid ?
    As a towel for example, How fast would you have to put it in and out of water so that the towel does not absorb any of the liquid ?
    7 answers · 3 days ago
  • What stops two macroscopic objects from going through one another according to the atomic level?

    Best answer: Yes, exactly. The atoms in a solid are bound together, and those bonds, due to repulsion of the electrons (which is what "bonds" are made of) keep your atoms from getting in between the atoms of the solid or pushing them out of the way. Atoms in a liquid or gas can be bound together a few at a time into... show more
    Best answer: Yes, exactly. The atoms in a solid are bound together, and those bonds, due to repulsion of the electrons (which is what "bonds" are made of) keep your atoms from getting in between the atoms of the solid or pushing them out of the way. Atoms in a liquid or gas can be bound together a few at a time into molecules, but those molecules are not strongly bonded together to each other, so they can easily slide out of the way when you push on them.
    5 answers · 1 day ago
  • What stops the electron from falling into the nucleus?

    Best answer: Probability
    Best answer: Probability
    7 answers · 4 days ago
  • How is electricity and magnetism the same so it is called electromagnetism?

    Best answer: A changing magnetic field produces an electric field.
    A changing electric field produces magnetic field.
    So it was realised that electricity and magnetism as different 'faces' of the same thing - which we call electromagnetism.
    Best answer: A changing magnetic field produces an electric field.
    A changing electric field produces magnetic field.
    So it was realised that electricity and magnetism as different 'faces' of the same thing - which we call electromagnetism.
    7 answers · 5 days ago
  • What is the speed at which light travel?

    11 answers · 6 days ago