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A hydrogen atom is in its eighth excited state, corresponding to n = 9.
(a) Find the radius of the electron's Bohr orbit.
nm
(b) Find the de Broglie wavelength of the electron in this orbit.
The bullet becomes lodged in the block, and the two slide together on the floor for a distance of 1.3 m before coming to rest. If the coefficient of friction between the block and the floor is 0.40, Elucidate what is the mass of the block?
A telephoto lens can focus on objects located between infinity and closer. To focus, How far away is the closest object that it can capture
Seat belts and air bags save lives by reducing the forces exerted on the driver, A 58kg person is in a head-on collision. The car's speed at impact is 13m/s. Estimate the net force on the person if he or she is wearing a seat belt and if the air ..
Consider a constant net force of 15.0 N acting on 22 degrees below the x-axis, find the work done by the net force.
What is magnitude of the unknown force
A current of 15.0 mA is maintained in a single circular loop with a circumference of 3.30 m. find the magnitude of the torque exerted by the magnetic field on the loop
A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.763 rev/s, Calculate the initial and final kinetic energies for this system.
The average speed of the atoms in a 1.6 g sample of helium gas is 651 m/s. Estimate the thermal energy of the sample
A coiled telephone cord forms a spiral with 56 turns, a diameter of 1.30 cm, and an unstretched length of 60.0 cm. Determine the self-inductance of one conductor in the unstretched cord.
A 60 kg person drops from rest a distance of 1.20m to a platform of negligible mass supported by a stiff spring. The platform drops 6cm before the person comes to rest.
A spherical 3-mi diameter comet impacts the earth with a velocity of 20 mi/s. Calculate the amount of heat released from the impact site
Calculate the flow rate in cubic centimeters per second in an aorta of radius 60 cm if the average blood velocity in it is 0.81 cm/s
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