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Compute the DeBroglie wavelength and the orbital radius of an electron in the n = 4 energy state of a hydrogen atom. Utilize the Bohr model of the atom to make these calculations. Estimate the relationship among the DeBroglie wavelength and the orbital circumference of the electron.
At the end of a factory production line, boxes start from rest and slide down a 30 degrees ramp 5.4 m long. If the slide is to take no more than 3.3 s, what is the maximum coefficient of friction between the box and the slide?
Air at 80 kPa, 27 degrees C and 220 m/s eneters a diffuser at a rate of 2.5 kg/s and leaves at 42 degrees C. the exit area of the diffuser is 400 cm2. the air is estimated to lose heat at a rate of 18 kJ/s during this process.
A 0.49 kg object connected to a lightspring with a force constant of 18.0N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
a stone is dropped from rest from the roof of a 100-m high building 2.00 s after that a second stone is thrown straight
a capacitor is to be made of two parallel plates of gold separated by a sheet of plastic. the plastic sheet is 1 mm
An alpha particle (q = 2e and m = 6.64e-27 kg) is accelerated from rest through a potential difference of 1.2e+5 volts. Find the speed of the particle after being accelerated
Calculate the net work done by the force of friction. A 1.50 m-long, 530 g rope pulls a 7.00 kg block of ice across a horizontal, frictionless surface. The block accelerates at 1.90 {rm m}/{rm s}^{2}. How much force pulls forward on (a) ice (b) rop..
in a thundercloud there may be electric charges of 140.0 c near the top of the cloud and 240.0 c near the bottom of the
It takes a flea 1.0 x 10-3 sec to reach a peak speed of 0.74 m/s. If the mass of the flea is 0.45 x 10-6 kilogram, determine what is the average power required
A sky-diver jumps out of a plane and achives (terminal velocity) before opening his parachute.Explain what is meant by the term terminal velocity,why it occurs and what value of velocity a typical sky diver might experience.Include references to your..
A double-slit interference experiment is performed with light from a laser. The separation between the slits is 0.59 mm, What is the wavelength of the laser light
A professional boxer hits his opponent with a 1000 N (225 lb) horizontal blow that lasts for 0.15 s. Calculate the impulse imparted by his blow
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