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In the Bohr model, the electron in H has a circular orbit. For an isolated atom, the only force on the electron is the strictly radial electrical force. Hence, the electron orbit must be in a plane. That is, it does not move over the surface of a sphere, but only along a single path around the sphere. Does this violates the uncertainty principle?
A cylinder with a piston contains 0.250 mol of oxygen at 240000 pascal and 355 kelvin. The oxygen may be treated as an ideal gas. The gas first expands isobarically to twice its its original volume. It is y then compressed isothermally back to its..
The boom in the crane is free to pivot about point P and is supported by the cable that joins halfway along its 18 m length. the cable passes over a pulley and is anchored at the back of crane. the boom has a mass of 1700 kg, distributed evenly an..
A bottle containing 5 kg of water at a temperature of 15C is placed in a refrigerator, How much heat is transfered from the water to cool it to 1C
Create a visual display for a tennis ball rolling horizontally along a table and as it goes off the table. Sketch and label all forces acting on the ball in as a minimum three different locations of its motion.
Dust particles are pulverized rock, which has density 2500 kg/m3. They are approximately spheres 20 ?m in diameter. what is the root-mean-square speed (thermal speed) of a dust particle at 60°C
Scientist calls a theory that unites many ideas in a simple way "beautiful." Are unity and simplicity among the criteria of beauty outside of science? Help support the answer.
A circular coil, with radius of 10 cm, and 25 turns, rotates in a constant magnetic field of strength 2.4 T, If the magnetic field that the coil is in points down the page, which direction does the coil rotate
Seat belts and air bags save lives by reducing the forces exerted on the driver, A 58kg person is in a head-on collision. The car's speed at impact is 13m/s. Estimate the net force on the person if he or she is wearing a seat belt and if the air ..
A spaceship, traveling at 0.56c towards a stationary enemy station, What is the speed of the projectile relative to the station
Suppose a 61 kg boy and a 43 kg girl use a mass less rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the magnitude of the acceleration of the boy toward the girl.
A box is at rest on a horizontal table. Is it because of the first law, second law, and or third law of motion that those two forces are equal
a monochromatic beam of light of wavelength 600nm is incident on a diffraction grating with a slit spacing of 1.7*10^-4cm
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