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1. Why must all field quanta be bosons?
2. There are four distinctly different K mesons. Why do we not assign to them the isospin quantum number T = 3/2 so that they would constitute an isospin quartet?
3. Exactly what does the strangeness quantum number S specify?
A spherical planet called "Glob" has a mass of 7.80 × 1018 kilogram and a radius of 6.30 × 104 meter. Find the initial speed of the rock as it left the astronaut hand
A 1.6 kg disk with radius 0.63 m is rotating freely at 55 rad/s around an axis perpendicular to its center. A second disk that is not rotating is felled onto the first disk so that their centers align, and they stick together. The mass of the second ..
If a Saturn V rocket with an Apollo spacecraft attached has a combined mass of 2.4 multiplied by 105 kg and reached a speed of 11.2 km/s, how much kinetic energy would it then have?
A 3.5 m long, 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70 kg construction worker stands at the far end of the beam.
A crate of 30.2- tools rests on a horizontal floor. You exert a regularly increasing horizontal push on it and observe that the crate just begins to move while your force exceeds 319. After that you must reduce your push to 227 to keep it moving at a..
A stellar atmosphere consists almost entirely of hydrogen. Assume that 50% of the hydrogen molecules are dissociated into atoms and that the pressure is 100 Pa. Given that the binding energy of the hydrogen molecule is 4.48 eV, estimate the temper..
Three resistors are connected to a in series with a 19 V ideal battery, What is the current coming out of the battery
A satellite is in a circular orbit very close to the surface of a spherical planet. The period of the orbit is 1.55 hours. What is density of the planet
Suppose that a particle accelerator is used to move two beams of particles in opposite directions. In a particular region, electrons move to the right at 7130 m/s, what is the magnitude of the average current in this region
what is the potential difference between the plates. A particular freely falling object requires 1.85 s to travel the last 31.0 m before it hits the ground. From what height above the ground did it fall.
a uniform rod of mass m and length l can pivot freely about a hinge attached to a wall, compute the angular acceleration of the rod
A dulcimer string which is supposed to vibrated at 256 Hertz actually vibrates at 250 Hertz. Find by what percentage should the tension be changed
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