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Angular momentum will not change unless an external torque acts upon the system
The short answer would be that angular momentum is conserved, i.e. it cannot be created nor destroyed.
A more technical answer would be that there is a certain theorem in theoretical physics called Noether's theorem which shows that if a physical theory exhibits rotational invariance (i.e. the physics are the same even if you rotate the system) that angular momentum conservation is a result.
According to particle physics therefore the conservation of angular momentum seems to tell us that the Universe is invariant under rotations. This might seem strange, because surely rotating yourself changes how think look, but the physics involved remains the same.
What else can I help you with?
How are currrent voltage and resistance related by Ohms Law?
They're not! The relationship you describe is derived from the definition of the ohm, not from Ohm's Law. This tells us that resistance is equal to the voltage divided by the current. Ohm's Law merely tells us that the ratio of voltage to current is constant for variations in voltage -which, unfortunately, is not actually true. In other words, Ohm's Law is not true!
What are advantages of ac bridges?
ac bridges give the value of impedances like inductance, capacitance with high accuracy. it also tells us about the quality factor .
What is the use of transformer utilisation factor?
It tells us how much is the transformer utilised in a given process. For a rectifier,TUF =(D.c.power delivered to the load)/(power rating of transformer secondary)
What is the cycle of a waveform?
goes through your ear and out the other...
What is the function of pneumatics?
A: physics tells us that if a put 1lb of pressure here it will be 1 lb far away. B: The function of pneumatics is to affect mechanical action by means of compressed gasses.
What states that the total momentum of objects that interact do not change?
You have more or less described a law of physics known as conservation of momentum, which is not the same thing as the law of universal gravitation. The law of universal gravitation describes the way mass attracts other mass, and the law of conservation of momentum tells us that momentum is neither created nor destroyed. These two laws are not connected.
What is the orbital angular momentum formula and how is it used in physics?
The orbital angular momentum formula is L = r x p, where L is the angular momentum, r is the position vector, and p is the momentum vector. In physics, this formula is used to describe the rotational motion of an object around a fixed point. It helps in understanding the conservation of angular momentum and the behavior of rotating systems, such as planets orbiting the sun or electrons moving around an atomic nucleus.
What is the significance of the expectation value of angular momentum in quantum mechanics?
The expectation value of angular momentum in quantum mechanics is important because it gives us information about the average value of angular momentum that we would expect to measure in a system. This value helps us understand the behavior and properties of particles at the quantum level, providing insights into their motion and interactions.
What is a conserved quantity?
A conserved quantity is a physical property of a system that remains constant over time, even as the system undergoes changes. Examples include energy, momentum, and angular momentum. The conservation of these quantities is a fundamental principle in physics and often allows us to make predictions about the behavior of a system.
What is the relationship between the expectation value of angular momentum and the quantum mechanical properties of a physical system?
The expectation value of angular momentum in quantum mechanics represents the average value of angular momentum that we would expect to measure in a physical system. It is related to the quantum mechanical properties of the system because it provides information about the distribution of angular momentum values that can be observed in the system. This relationship helps us understand the behavior of particles at the quantum level and how they interact with their environment.
What are the allowed total angular momentum quantum numbers of a composite system in which j1 5 and j2 3?
Using the commutation relation will help us compute the allowed total angular momentum quantum numbers of a composite system.
What principle tells us atoms are not destroyed?
conservation of matter
What is the significance of angular momentum density in the study of rotational motion?
Angular momentum density is important in the study of rotational motion because it helps us understand how mass is distributed and how it affects the rotation of an object. By analyzing the distribution of angular momentum within an object, we can predict its behavior and stability during rotation. This concept is crucial in various fields such as physics, engineering, and astronomy to accurately model and analyze rotational systems.
What causes the Earth to spin on its axis?
Oh, what a delightful question. The Earth spins on its axis all thanks to an event long, long ago when our planet formed out of cosmic dust and other celestial materials coming together. Just like a gentle spiral of paint on our canvas, the Earth keeps turning, dancing through space with grace and purpose.
What is the constent in the field of central force?
In the field of central force, the constant refers to the conservation of angular momentum of a particle moving under the influence of a central force. This constant allows us to analyze the motion of the particle and understand its behavior without explicitly solving the differential equations of motion.
Why does the world pivot on its axis?
The world spins around because of the way the solar system was formed as a spinning cloud of matter. This then it began to collapse in on itself as it did this the heat at the centre became so great that the sun ignited and pushed out all the matter which then formed the planets, still spinning because of the energy from the explosion as the sun ignited.Supplement 2 As far as the planets are concerned, they would have had some net rotational momentum, the residual of all the components that made the planet.This rotational energy cannot be destroyed - it however might be cancelled out by opposite-spin material.BUT back to the question. The Earth carries the residual net spin from its assembly from space debris.Answer:The rotation comes about from the conservation of angular momentum. The formula for angular momentum is:L=mwr2m is the mass,w is the angular velocity in radians per second, andr is the radius of the circular motion.Due to conservation of angular momentum, as the radius of the orbit decreases, then its angular velocity must increase (as the mass is constant). As a consequence the parts of the planet closer to the primary (the Sun) must rotate faster than the parts furthest from the Sun. This causes the spin.This all relates to the fact that planetary and stellar systems are born from the collapse of dense interstellar clouds. As the clouds collapse even a small rotation is magnified by the contraction. If the clouds were not rotating (matter fell straight to the center of the system) there would be no planets.
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.
