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a) If an atom has an electron in the n=5 state with m=3, what are the possible values of l?
b) What kind of semiconductor is produced if silicon is doped with (a) phosphorus, and (b) indium?
c) A particle has a mass equal to 10 u. If this mass is converted completely into energy, how much energy is released? Express your answer in mega-electron volts (MeV). (Recall that 1eV=1.6×10-19J)
d) 249Cf undergoes alpha decay. (a) Write the reaction equation. (b) Find the energy released in the decay.
e) Calculate the energy released in the neutron-induced fission reaction n+235U→92Kr+142Ba+2n, given m(92Kr)=91.926269u and m(142Ba)=141.916361u. (b) Confirm that the total number of nucleons and total charge are conserved in this reaction.
Find with what tension must a rope with length 2.90 meter and mass 0.220 kilogram be stretched for transverse waves of frequency 40.0Hz to have a wavelength of 0.930 m
a baseball has a mass of 0.12 kg and a major-league pitcher can deliver a ball with a speed of 30 ms. compute the de
A 0.75 kilogram ball, attached to the end of a horizontal cord, is rotated in a circle of radius 1.5 meter on a frictionless horizontal surface. find what is the maximum speed the ball can have
A proton is on the x axisat x = 1.2 nm. An electron is onthe y axisat y = 0.66 nm. Find the net force the two exert on ahelium nucleus (charge +2e) at the origin. i need theforces in vector i and j form. Try following the solution but myanswer is com..
An airplane is flying at 600 km/h at an altitude of 2.0km. how far away is she from being directly below the airplane
a .40-kg bucket of bait, attached to the end of a .75 m string, is whirled around in a circular horizontal path. What is the speed of the bucket
Three moles of an ideal monatomic gas expands at a constant pressure of 2.00atm ; the volume of the gas changes from 3.40×10?2m3 to 4.60×10?2m3. Calculate the amount of work the gas does in expanding
A capacitor has plates that are located .08 meters from each other with air as the material between the plates, Find the force exerted on the plates of the capacitor
A gas of diatomic molecules is in equilibrium at a temperature of 340 K. What is the mean angular momentum of the molecules
What should the pilot also consider with regard to runway length in these conditions, as well as crosswind limitations?
The nearpoint of an eye is 55 cm. A corrective lens is to be used to allow this eye to clearly focus on objects 25 cm in front of it. What is the power of the needed corrective lens?
the two hot-air balloons in the drawing are 48.2 m and 61.0 m above the ground. a person in the left balloon observes
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