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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 5.2 x 10-11 m from the nucleus. Assuming the hydrogen atom is a sphere with a radius of 5.2 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.
A small glass bead has been charged to +30.0nC. A metal ball bearing 1.30cm above the bead feels a 1.90×10?2N downward electric force. What is the charge on the ball bearing?
A ring 1.90m in diameter is pivoted at one point on its circumference so that it is free to rotate about a horizontal axis. what is its maximum angular velocity
A recording engineer works in a soundproofed room that is 39.4 dB quieter than the outside. what is the intensity outside
Water moves through a constricted pipe in steady, ideal flow. At the lower point the pressure is 1.73 105 Pa and the pipe radius is 2.80 cm. Find the speed of flow in the lower section
Photorefractive keratectomy (PRK) is a laser-based surgery process that corrects near- and farsightedness by removing part of the lens of the eye to change its curvature and hence focal length. What is the energy of a single photon
A 50kg mass is tied to a massless rope wrapped around a solid cylindrical drum, mounted on a frictionless horizontal axle. Find the drum's mass
A piston cylinder contains ar at 375kPA and 20 degrees celicus. Determine the heat added and the work done, using both Air Tables and Constant specific heat
In an experiment performed in a space station, a force of 38 N causes an object to have an acceleration equal to 5 m/s2. What is the object's mass
Find the total power radiated out into space by the Sun assuming it to be at a temperature of 5500 K and the emissivity is 1
The sound level 23 m from a loudspeaker is 65 dB. What is the rate at which sound energy is produced by the loudspeaker
A 7.70-uF capacitor and a 1250-ohm resistor are connected in series to a generator operating at 50 Hz, What is the average power dissipated in this circuit
A 28 Vpp square wave (50% of the time at +28 volts and 50% of the time at 0 volts) is connected to a 4 ohm speaker. Calculate the average power delivered to the speaker
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