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The nucleus of the hydrogen atom has a radius of about 1.1 x 10-15 m. The electron is at a distance of about 4.3 x 10-11 m from the nucleus. Assuming the hydrogen atom is a sphere with a radius of 4.3 x 10-11 m, find
(a) the volume of the atom,
(b) the volume of the nucleus, and
(c) the percentage of the volume of the atom that is occupied by the nucleus.
She comes to rest 1.13 m under the surface of the water. Identify the magnitude of the average force that the water exerts on the diver. This force is nonconservative.
A hot (70°C) lump of metal has a mass of 250g and a specific heat of 0.25 cal/g°C. John drops the metal into a 500 g calorimeter containing 75g of water at 20°C.
Does papillary muscles contract after the other ventricular muscles so that they can take up the slack on the chordae tendineae before the full force of ventricular contractions sends blood against the AV valve flaps.
A common flashlight bulb is rated at 0.300 A and 2.60 V, what is the temperature of the filament when the bulb is on? Calculate in deg Celsius
What additional force is necessary to hold the nozzle stationary after the water flow is turned on if the discharge rate is 0.550 kg/s with a speed of 26.5 m/s
Thermal energy can shift some of the electrons in a hot semiconductor from valence levels to conduction levels. What effect do these shifts have on the semiconductor's ability to conduct electricity.
Bob Richards is production manager of Zychol Chemicals, in Houston Texas, is making his quarterly report, which is to include a productivity examine for his section.
A rotating space station is said to create "artificial gravity"-a loosely-defined term used for an acceleration that would be crudely similar to gravity, what angular velocity would produce an "artificial gravity" of 9.80 m/s2 at the rim
Lunar astronauts placed a reflector on the moon's surface, off which a laser beam is periodically reflected, What percent accuracy is this, given the average distance to the moon is 3.84
A 15.1 mass fastened to the end of a steel wire with an unstretched length of 0.650 is whirled in a vertical circle with angular velocity 2.00 at the bottom of the circle. The cross-sectional area of the wire is 1.20×10?2 . Calculate the elongatio..
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 16.0° below the horizontal. The length of time the car is in the air
A boy is attempting to swim directly across a river; he is able to swim at a speed of 0.421 m/s relative to the water. The river is 2.48 m wide and the boy ends up at 4.77 m downstream from his starting point.
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