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Question: Quantum phenomena are often negligible in the "macroscopic" world. Show this numerically for the following cases:
(a) The amplitude of the zero-point oscillation for a pendulum of length I = 1 m and mass m = 1 kg.
(b) The tunneling probability for a marble of mass m = 5 g moving at a speed of 10 cm/set against a rigid obstacle of height H = 5 cm and width w = 1 cm.
An automobile starter motor has an equivalent resistance of 0.0660 ? and is supplied by a 12.0-V battery with a 0.0170-? internal resistance. What is the current to the motor
Two point charges q and 4q are at x=0 and x=L, respectively, and free to move. A third charge is placed so that the entire three-charge system is in static equilibrium. What is the magnitude of the third charge? What is the x-coordinate of the thi..
gas is confined in a tank at a pressure of 1.0 x 108 pa and a temperature of 15.0 c. if half the gas is withdrawn and
an airplane is traveling at 117 mph relative to the air 13 degrees e of n at an altitude of 5000 ft. it encounters a
Four equal positive point charges, each of charge 8.7C, are at the corners of a square of side 9.2 cm. What charge must be placed at the center of the square so that all charges are at equilibrium?
Is kinetic energy of a system conserved when two objects collide and stick together? What about the momentum of the system? What kind of collision is this (elastic or inelastic )?
The tape is now wound back into the drum at angular rate. With what speed would the end of the tape move? (Note that our drawing specifies that a positive derivative of implies motion away from the drum. Be careful with your signs. The fact that the ..
A transformer has an input coil by Nin = 450 turns and N out = 950 turns. If the voltage across the input coil has amplitude of 1.6 V, what is the voltage across the output circuit?
(a) What is the average speed of the river in the gorge? (b) What is the average speed of the water in the river downstream of the falls when it widens to 60 m and its depth increases to an average of 40 m?
A low-friction cart of mass 5.0 kg is attached to the spring, the spring is stretched 1.5 m from its equilibrium length, What is the velocity of the cart at this position
By what factor will the rms speed of gas molecules increase if the temperature is increased from 40 ?C to 150 ?C
7.84 g of argon gas at an initial pressure of 4.34 atm and at 16°C undergo an isobaric expansion until the volume has increased in five times. What is the volume of the gas after expansion
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