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In a semiclassical model of the hydrogen atom, the electron orbits the proton at a distance of 0.053 nm.
What is the electron's potential energy?
A water filled pipe has water flowing at 5.70 m/s in a section of pipe where the diameter is 19.2 cm, What is the volume flow rate through the smaller pipe
During 0.15 s, a wheel rotates through an angle of 2.74 rad as a point on the periphery of the wheel moves with a constant speed of 2.16 m/s
Ignoring the mass of the spring, what is the mass of the fish?
How much acceleration does a 747 jumbo jet of mass 45000 kg experience in takeoff as the thrust for each of four engines is 45000 N.
Deflection of the electron beam in a tube TV set is accomplished by magnetic forces. how far from the center of the screen does the beam strike
A pulley system is used to lift a piano 3.4 m. The acceleration of gravity is 9.81 m/s2 . If a force of 2315 N is applied to the rope as the rope is pulled in 17 m, what is the efficiency of the machine
Assuming that the acceleration is uniform when the racquet is applied over a distance of 0.52 m, illustrate what is the magnitude of the force exerted on the ball by the racquet?
A skier (m=63.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 6.10 m and D = 12.2 m, find H.
A car (m=2000 kg) is parked on a road that rises 20 degrees above the horizontal. What are the magnitudes of (1) the normal force and (2) the static frictional force that the ground exerts on the tires
An airplane is flying with the velocity of 85.0 m/s at an angle of 20.0 degrees above the horizontal. When the plane is a distance 107 m directly above the dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far..
a positive charge of -4 microcoulombs is llocated at the center of a spherical shell of inner radius 2cm and outer radius 3cm, what is the total charge on he inner shell
The drive shaft AB of an automobile is to be designed as a thin-walled tube. The engine delivers 125 kW when the shaft is turning at 1500 rev/min. Determine the minimum thickness of the shaft's wall
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