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Neutral hydrogen can be modeled as a positive charge of 1.6 x 10 ^-19 (the proton) surrounded by a spherically symmetric distribution of negative charge having a volume charge density ρ=A x e^(-2r/ao) where ao =5.3 x 10^-11 meter and is called the Bohr radius. The constant A is chosen such that the total amount of negative charge is -1.6 x 10^-19. Compute the value of the constant A with proper units. Find the net amount of charge inside a sphere of radius ao. Compute the electric field at a distance of ao from the nucleus.
A pair of speakers separated by 0.700m are driven by the same oscillator at a frequency if 690Hz. an observer originally positioned at one of the speakers begins to walk along a line perpendicular to the line joining the speakers.
The force F3, 6.17 N, acts on the block at an angle of 152.02 degrees. what is the work done by the force F3
An electric field of 1.44 kV/m and a magnetic field of 0.363 T act on a moving electron to produce no net force. evaluate what is the electrons speed
A small piece of dust of mass m = 2.5 µg travels through an electric aircleaner in which the electric field is 447 N/C. The electric force on the dust particleis equal to the weight of the particle. What is the charge on the dustparticle?
Two hockey pucks, A and B, on a frictionless surface are coverd with velcro. Both pucks have a mass of .50kg. puck A is moving south @ a speed of 1.2m/s and B is moving east at a speed of 1.6m/s. the two collide and stick toge
A 10-m-by-14-m house is built on a 12-cm-thick slab of concrete. What is the rate of heat loss through the slab if the ground temperature is 5.00° C while the interior of the house is 22.0° C
A 1250 kg car is moving at 5.0 m/s collides with and couples with the 750 kg car. What is the resulting speed of the coupled cars.
Determine the change in gravitational potential energy of a 70-kg skier-Earth system when the skier goes down this slope.
You work for Wham-O! Computer Inc. in its product testing department. Find the laptop velocity right before it hits the floor
What is the average energy of the system after many measurements
In an oscillating LC circuit, L = 3.20 mH and C = 2.60µF. At t = 0 the charge on the capacitor is zero andthe current is 2.30 A. What is the maximum charge that will appearon the capacitor in C?
a uniform electric field of magnitude 325 vm is directed in the negative y direction. the coordinates of point a are
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