• What is Zero Gravity?

    Best answer: Weightlessness, or an absence of 'weight', is an absence of stress and strain resulting from externally applied mechanical contact-forces, typically normal forces from floors, seats, beds, scales, and the like. Counter intuitively, a uniform gravitational field does not by itself cause stress or strain, and... show more
    Best answer: Weightlessness, or an absence of 'weight', is an absence of stress and strain resulting from externally applied mechanical contact-forces, typically normal forces from floors, seats, beds, scales, and the like. Counter intuitively, a uniform gravitational field does not by itself cause stress or strain, and a body in free fall in such an environment experiences no g-force acceleration and feels weightless. This is also termed "zero-g" where the term is more correctly understood as meaning "zero g-force.
    10 answers · 2 days ago
  • If I drop a bouncy ball from burj khalifa will it orbit earth?

    burj khalifa is 830 miles high, and a bouncy ball dropped from a few feet bounces pretty high, so what happens if its dropped from 830 miles? It goes up bouncing so high so can it orbit earth?
    burj khalifa is 830 miles high, and a bouncy ball dropped from a few feet bounces pretty high, so what happens if its dropped from 830 miles? It goes up bouncing so high so can it orbit earth?
    7 answers · 15 hours ago
  • Does anyone think the Butterfly Effect is real?

    I have read the Chaos theory which ostensibly grounds this proposition; however, we have never observed a causal nexus, nor is the causal chain of events verifiable. Frankly if one is to believe in the Butterfly Effect they must succumb to the ontological argument and admit to an unmoved mover who has the power of... show more
    I have read the Chaos theory which ostensibly grounds this proposition; however, we have never observed a causal nexus, nor is the causal chain of events verifiable. Frankly if one is to believe in the Butterfly Effect they must succumb to the ontological argument and admit to an unmoved mover who has the power of self existence, and self movement.
    7 answers · 1 day ago
  • Does the elevator do this to everyone or am I just fat?!?

    When I step into the elevator it makes a thud sound and lowers a bit. Does this happen to everyone when they walk into an elevator?
    When I step into the elevator it makes a thud sound and lowers a bit. Does this happen to everyone when they walk into an elevator?
    6 answers · 12 hours ago
  • How can quarks have "flavors"?

    8 answers · 2 days ago
  • The nornal force for a 3 kg textbook sitting on a table is?

    a) 0 N b) .33 N c) 3 N d) 9.81 N e) 29.4 N f) 294.3 N
    a) 0 N b) .33 N c) 3 N d) 9.81 N e) 29.4 N f) 294.3 N
    5 answers · 5 hours ago
  • How fast does someone need to run before disintegrating?

    I was watching The Flash and season 2 episode 16 -Trajectory-, SPOILER, the female speedster died from evaporation from running too fast. I know it's not possible to even run over 30 mph, but in the syfy world, doing the math, what would the speed be before the person would vanish from going to fast? I also... show more
    I was watching The Flash and season 2 episode 16 -Trajectory-, SPOILER, the female speedster died from evaporation from running too fast. I know it's not possible to even run over 30 mph, but in the syfy world, doing the math, what would the speed be before the person would vanish from going to fast? I also write syfy as well and have a character that has the power of speed, and wondering if possible, i've been making my character run too fast without including harm? Also, since they are speedsters, wouldn't their cells regenerate to heal them? The character I'm writing also has healing/regenerating powers so maybe that would help my character as well? Imagine if possible, how fast does someone need to run before disintegrating?
    5 answers · 5 hours ago
  • Fvckin' magnets. How do they work?

    Best answer: Electrons are little magnets. In most substances, they're paired off. In some substances they're not. And in substances where they aren't, and you have a lot of electrons aligned the same way, their magnetic fields combine enough that the field can be measured on a macro-scale.
    Best answer: Electrons are little magnets. In most substances, they're paired off. In some substances they're not. And in substances where they aren't, and you have a lot of electrons aligned the same way, their magnetic fields combine enough that the field can be measured on a macro-scale.
    11 answers · 3 days ago
  • Gravity is determined by?

    Gravity is determined by?

    Best answer: In classical physics the force of gravity is W = mGM/r^2 where m is the target mass that has the force called weight, G is a tiny constant, M is the source mass of the gravity field (e.g., Earth), and r is the distance between m and M. So what you weigh, the force of gravity, is determined by your mass m, the... show more
    Best answer: In classical physics the force of gravity is W = mGM/r^2 where m is the target mass that has the force called weight, G is a tiny constant, M is the source mass of the gravity field (e.g., Earth), and r is the distance between m and M. So what you weigh, the force of gravity, is determined by your mass m, the Earth's mass M, and how far you are from Earth's center of mass. ANS.

    But a more precise model for the force of gravity is the general theory of relativity. It specifies that gravity sources are mass, energy, and/or stress. Not just mass. And it also specifies that the characteristics we attribute to the force of gravity are due to warped space. [Check the image.]

    As you can see in the image, space curves inward onto the mass of Earth. These curve lower the potential energy in closer to the planet. So potential energy wells are created. And objects falling into those wells pick up kinetic energy as their potential energy decreases. So the objects are both accelerating and falling toward the planet. Both are gravity characteristics: attraction and acceleration.
    6 answers · 2 days ago
  • Why is lightning five times hotter than the sun?

    How can something that occurs on earth be so hot?
    How can something that occurs on earth be so hot?
    7 answers · 2 days ago
  • Please help with this physics question?

    Best answer: Well, it seems the structure is 100 ft. high, so I suppose swing radius is maybe 90 ft. It reportedly does 60mph. at the bottom. I'll need to metricate. (90 x 0.3048) = 27.4 metres radius. (60mph x 0.44704) = 26.82m/sec. Centripetal acceleration at bottom = g + (v^2/r) = 9.8 + (26.82^2/27.4) = 36 metres/... show more
    Best answer: Well, it seems the structure is 100 ft. high, so I suppose swing radius is maybe 90 ft.
    It reportedly does 60mph. at the bottom.
    I'll need to metricate.
    (90 x 0.3048) = 27.4 metres radius.
    (60mph x 0.44704) = 26.82m/sec.
    Centripetal acceleration at bottom = g + (v^2/r) = 9.8 + (26.82^2/27.4) = 36 metres/ sec^2
    (36/g) = (36/9.8) = 3.67g.
    (142lb x 3.67) = 521lbs. scale reading approx.
    5 answers · 1 day ago
  • Light definitely has mass?

    8 answers · 3 days ago
  • If your mass is set into motion, it will eventually come to rest if you wait long enough. Explain why this happens. Pls Help..?

    Best answer: In real world, all surfaces have friction. And the force of air resistance is always present. One or both of these forces would cause the object’s velocity to decrease. So, the object will come to rest.
    Best answer: In real world, all surfaces have friction. And the force of air resistance is always present. One or both of these forces would cause the object’s velocity to decrease. So, the object will come to rest.
    6 answers · 2 days ago
  • Out of all the sciences, which one would be idealistic to prove God's existence?

    Best answer: None of the above. Proof is not possible. You can believe, ( or not). Science discovers what exists, and makes predictions from that. Science makes no claim to prove anything. We leave "proof" to others who do not know enough to realize the futility of the... show more
    Best answer: None of the above. Proof is not possible.
    You can believe, ( or not). Science discovers what exists, and makes predictions from that.
    Science makes no claim to prove anything.

    We leave "proof" to others who do not know enough to realize the futility of the term.
    ***************************************...
    I have had so many people try to promote this question that it demands a proper response.

    If you do not believe in a God then you cannot expect proof of God's existence.

    If you do believe in a God and you realize that God has not left easily identifiable proof then you must accept that it is God's will for us to not have proof.

    Therefore in seeking proof a religious person would be knowingly defying God's will. They wouldn't do this.

    And an irreligious person wouldn't seek proof.

    So who then could justifiably seek proof?
    5 answers · 2 days ago
  • Thoughts DONT have weight, right?

    Short and simple, I know thoughts are conveyed by electricity.
    Short and simple, I know thoughts are conveyed by electricity.
    4 answers · 12 hours ago
  • What makes a stronger electromagnet, feeding it certain current and voltage or feeding it half the current and double voltage?

    Best answer: Seems like either a trick question or a very easy question. The quick answer is that the force depends on current only, so half the current will give you less force. However, if you feed a coil double the voltage, and the resistance does not change, current should also double. I assume that is not where the... show more
    Best answer: Seems like either a trick question or a very easy question.

    The quick answer is that the force depends on current only, so half the current will give you less force.

    However, if you feed a coil double the voltage, and the resistance does not change, current should also double. I assume that is not where the question is headed.

    Mangeto Motive Force is proportional to current and number of turns of the coil. That's it. Voltage is irrelevant, except to determine current.
    4 answers · 21 hours ago