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Is the angular momentum of a body which is under the action of central forces is constant?
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What is a constant across the entire elevtromagnetic spectrum?
The Planck constant is a physical constant: the quantum of action in quantum mechanics, with an angular momentum. The Planck constant is the proportionality constant between the energy of a unit of electromagnetic radiation. You may also be looking for the answer of "the speed of light."
Why does the earth spin in space?
The Earth spins in space due to an action called angular momentum. The Sun is considered the fixed point of the Earth, which is why the Earth rotates around the Sun.
What is the momentum law?
The Momentum Law is Newton's 3 rd Law Action-Reaction,The sum of the forces is zero. 0 = F1 + F2 = d(p1 +p2)/dt gives teh Momentum Law: p1 + p2 = constant.
What does a planets rotation cause?
This is a very good question that may not have an ultimate answer, but there is an explanation. The reason a planet rotates is due to its origins from the nebula from which it formed. This nebula had to be rotating. You probably have heard about the gyroscope and how it works- conservation of angular momentum. Angular momentum is determined by the rate of rotation and the mass of the object and its distribution as a function of distance from the axis of rotation. This is the principle behind an ice-skater spinning up when the arms are brought close to the body, or slowing down when the arms are extended. Except for dissipation and action of other torques, angular momentum is held constant. Thus the rotation of the gases and dust from which a planet formed causes the planet to keep on rotating, to conserve the initial angular momentum.The planet's rotation is of course changed by events both inside and outside of the planet. For example, it has been recently shown that the use of dams has changed the distribution of stored water on earth at different latitudes, sufficiently to change the length of the day! The difference is small, but has been detectable.But, why is the angular momentum conserved? And why was the nebula rotating if the universe began in a big bang?
When an action and reaction occur momentum is usually lost?
No. Total momentum before and after the collision is the same. Some kinetic energy can be lost - but not momentum.
If six gyroscopes connected together at a central point in six different planes are spun at a high rpm in opposite directions would it remain suspended in mid-air?
No. Gyroscopic action does not prevent the action of gravity. It resists the actions of movement through momentum.
All mass movements on earth are caused by what action force?
momentum
Why is the law of conservation of momentum important?
The Law of conservation of momentum tells us that the law of conservation of energy is in effect. The first derivative of energy is force. If the force is zero, then there is conservation of energy. If force is zero than momentum is constant as force is dP/dt then 0=dP/dt or Conservation of Momentum.
When was Central Vermont Community Action Council created?
Central Vermont Community Action Council was created in 1965.
The conservation of momentum is most closely related to?
It is closely to Newton's Third Law - since in an action and reaction pair, momentum "gained" by one object will be "lost" by the other.
Newton's third law states?
Newton's third law is..."For every action there is an equal and opposite reaction."This is probably the hardest law to really understand.It really helps to understand this law if you understand that the law has its origin in the conservation of momentum principle.The fact of the matter is, force can be most fundamentally understood to be the rate of change of momentum.Let me explain why.First momentum is..P=mvNow look at the equation for force.F=maIt is very similar except that in place of P we have F and in place of v we have a.Looking at the force equation again..f=mawe note that acceleration is the rate of change of velocity so...F=m dv/dtNow since the mass, m, is constant we can put it directly beside the velocity like so..F=d(mv)/dtThis is looking more like the below momentum equation...P=mvThe only difference is that for the momentum equation, we have, mv, and for the force equation we have the rate of change of, mv, or, d(mv)/dtNow in the force equationF=d(mv)/dtbecause P = mv, we can replace, mv with P...F=dP/dtAs I said, force is the rate of change of momentum.Now since the law of conservation of momentum states that momentum is neither created nor destroyed, if an object picks up momentum, another object to lose momentum. In Newton's third law the "action" force is the second body picking upmomentum and the "reaction" force is the first body losing that momentum.As an example, imagine two people standing on a very slippery skating rink, because they are standing still, together, they have zero momentum. If one person pushes the second person, or "applies a force" on the second person, the second person has momentum delivered to them and that second person picks up speed/momentum in that direction. The first person however picks up speed/momentum in the other direction, which means that he also had momentum delivered to him. That second person picking up momentum was the "action force", and that first person picking up momentum in the other direction was the "reaction force".The second person picked up momentum in one direction, and since there is the conservation of momentum law, the first picked up momentum in the opposite direction. Their momentum was zero before the event and since momentum has direction the sum of both momenta add up to zero after the event.If both people had been moving, for example, to the right and the first person pushed the second person also to the right, the second person would have picked up momentum to the right and the first person would have only lost momentum to the right. There would have still been both an action and a reaction force however because momentum was only exchanged.
True or false When an action and reaction occur momentum is usually lost?
True and false
