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A Hydrogen atom and a Helium atom each with 4 eV of KE approach a thin barrier 6 MeV high which has the greater probability of tunneling through the barrier? Explain.
A 0.1 kg ball is thrown towards a 0.3 kg rod that is 0.75 m long and hanging vertically from a frictionless hinge at its upper end. If the ball is traveling horizontally at 0.6 m/s just before striking the rod 0.5 m below the hinge and then reboun..
A long solenoid has 130 turns/cm and carries current i. An electron moves within the solenoid in a circle of radius 2.80 cm perpendicular to the solenoid axis. Find the current i in the solenoid
A solenoid is designed to produce a 2.74*10^-2T magnetic field near its center. what total length of wire is required to make this solenoid
An air-filled toroidal solenoid has a mean radius of 14.6cm and a cross-sectional area of 4.95cm^2. What is the last number of turns that the winding must have
Find a unit vector normal to both vectors A = 4a x - 3a y + a z and B = 2a x + a y - a z .
Light in a vacuum is incident on a transparent glass slab. The angle of incidence is 38.8°. What is the index of refraction of the liquid
two loudspeakers a and b are separated by a distance of 2.0 m. the speakers emit sound waves at a frequency of 680 hz
Athletes sometimes do an exercise called "curling weights." Obtain the torque about the elbow caused by a 40-pound weight that makes an angle of 55o with respect to the body
The flywheel of an automobile engine is a solid disk with a mass of 8.5 kg and a radius of 23 cm and is rotating at 3850 rpm. to what height would the flywheel be lifted
A ball that has a mass of 8 kg is attached to a string 1 m long and is whirled in a vertical circle at a constant speed of 18 m/s. Determine the tension in the string
Joey, whose mass is 37kg , stands at rest at the outer edge of the frictionless 250kg merry-go-round, 1.9m from its center. The merry-go-round is also at rest. What is the final angular speed of the merry-go-round
A hurricane-force wind of 220 blows across the face of a storefront window. Estimate the force on the 2.2 3.5 window due to the difference in air pressure
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