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A simple model of a hydrogen atom pictures the electron and proton as point charges separated by a distance of 0.050 nm, and A very simple model of a hydrogen atom is sketched in Figure 18.3, which shows an electron traveling in a circular orbit around proton. (We'll discuss more realistic models of an atom in Chapter 29.) If the distance between the electron and the proton is r =5.0 ×10-11m, what is the electric potential energy of this atom?we calculated the associated electric potential energy. If the electron is initially at rest, how much work is required to "break apart" these two charges, that is, to separate them by a very large distance? width=
Figure 18.3 A simplified model of an atom, with an electron in orbit around a proton.
A parallel plate capacitor is made from circular plates of Aluminum foil each with a radius of 3 cm. The distance between the plates is 8 mm. Find the charge stored in this capacitor
at the science olympiad competition a group of middle school students uses a trebuchet that launches a tennis ball from
A person sitting quietly in a room on a winter day may lose heat primarily by radiation from the outer surface of her clothes to the walls of the room. what is the temperature of the outer surface of the clothes
An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. How far (in km) must he now travel to reach base camp
The combination of two circular, coaxial coils of radius a separated by a distance also equal to a, with equal currents I in each coil circulating in the same direction, is known as a pair of "Helmholtz Coils." Assuming the coils are parallel to t..
a sound wave traveling in 26 degrees C air has a pressure amplitude of 0.500 Pa. (assume that the density of air is 1.29 kg/m^3). What is the intensity of the wave
One thousand kilocalories of heat are added to three moles of a monatomic ideal gas as it expands, What was the temperature change for this gas
What is the speed of the arrow as it leaves the bow. At a height of 5 meters above the surface of a lake, a sound pulse is generated. The echo from the bottom of the lake returns to point of origin 0.130 s later. The air and water temperatures are ..
An electron moves in a region where the magnetic field is uniform, has a magnitude of 60 mT, What is the pitch of the resulting helical path
Consider a balloon filled with helium gas at room temperature (T = 289 K) and atmospheric pressure. Calculate the average de Broglie wavelength of the helium atoms
A father pulls his son, whose mass is 22.9 kg and who is sitting on a swing with ropes of length 3.21 m, What is the speed of the son at the bottom of the swinging motion
A race car is making a U-turn at constant speed. The coefficient of friction between the tires and the track is ?s = 1.61. what is the maximum speed at which the car can turn without sliding
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