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Planetary model of Hydrogen atom has an electron in a circular orbit about a proton. The motion of the electron of charge 1.6 x10-19 C creates electric current. The electron's velocity is 2.2 x 106 m / s and Radius of electron orbit is 5.3 x 10-11 m. what is the magnetic field strength at the location of the proton?
A hypodermic syringe contains a medicine with the density of water, Determine the speed of the medicine as it leaves the needle's tip
Two point charges are fixed on the y axis: a negative point charge q1 = -28 µC at y1 = +0.23 m and a positive point charge q2 at y2 = +0.31 m. A third point charge q = +8.7 µC is fixed at the origin. The net electrostatic force exerted on the char..
you compress a spring with k3000nm a distance of 0.2m with a block of mass 4kg. you then release the block. it slides
A roller-coaster car has a mass of 506 kg when fully loaded with passengers. If the vehicle has a speed of 20.5 m/s at point , what is the force exerted by the track on the car at this point
A monkey is chained to a stake in the ground. The stake is 3.00m from a vertical pole, and the chain is 3.4m long. How high can the monkey climb up the pole?
find the rms speed and the average kinetic energy of a hydrogen atom at a temperature of 5.9 multiplied by 107 k. at
An object at rest explodes into three pieces of equal masses. One moves east at 23 m/s, while the second piece moves northwest at 14 m/s. Estimate the velocity of the third piece? Suppose each piece has a mass of 2 kg.
An alpha particle (a helium nucleus, containing 2 protons and 2 neutrons) starts out with kinetic energy of 9.9 MeV (9.9x106 eV), What is the final kinetic energy of the gold nucleus
A student walks 24 m from her math class and then turns 90° and walks 10 m to her locker, that is directly north of her class. What is her total displacement.
An ideal refrigerator does 160 J of work to remove 570 J of heat from its cold compartment during each cycle. What is the refrigerator's coefficient of performance
Occasionally, huge icebergs are found floating on the ocean's currents. Suppose one such iceberg is 125 km long, 32.6 km wide, and 159 m thick. (a) How much heat in joules would be required to melt this iceberg (assumed to be at 0 °C) into liquid ..
suppose an electron is accelerated by an electric field between two plates plate a and plate b. assume the electron
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