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In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.46 106 m/s.
(a) Find the force acting on the electron as it revolves in a circular orbit of radius 5.34 x 10-11 m.
(b) Find the centripetal acceleration of the electron.
An automobile tire has a volume of 1 .64 x 10-2 m3 and contains air at a gauge pressure of 165 kPa when the temperature is 0.000C. What is the gauge pressure of the air in the tires
A galvanometer has a coil resistance of Rgalv = 89.7 ?. It is to be made into an ammeter with a full-scale deflection equal to I = 2.35 A. If the galvanometer deflects full scale for a current of Igalv = 135 mA, what size shunt resistor should be use..
a 5 kg block moving at 4.0 m/s collides and sticks with a second stationary block of mass 3.0 kg, find the velocity of blocks after the collision
A 500 lines per mm diffraction grating is illuminated by light of wavelength 510nm. How many diffraction orders are seen
A cylinder rolls down a ramp of height h = 1.1 m with ? = 36°, starting from rest at the top. How long does it take to reach the bottom of the ramp
the motor in a refrigerator has a power output of 200w. if the freezing compartment is at 270k and the outside air is
A submerged scuba diver looks up toward the calm surface of a freshwater lake and notes that the Sun appears to be 32 degrees from the vertical. At what angle above the horizon does the friend see the sun
A system undergoes a two-step process. In the first step, the internal energy of the system increases by 228 J when 166 J of work is done on the system.
If each rock strikes the fixture travelling at 10.0 {rm m}/{rm s} horizontally and rebounds at 2.00 {rm m}/{rm s} backwards, how high above the lowest point does collision make your light fixture swing?
the frequency distribution below summarize the home sale prices in a city for a specific month. determine the width of
An electrical point charge of 4.50 mC is located on the x-axis at x = 8.00 cm. A second point charge is located on the y-axis at y = 5.70 cm. What is the distance between the two charges
An 8.5- {rm kg} point mass and a 15- {rm kg} point mass are held in place 50- {rm cm} apart. A particle of mass m is released from a point between the two masses 19- {rm cm} from the 8.5-{rm kg} mass along the line connecting two fixed masses.
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