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Two neutrons are in an infinite square well with L = 2.0fm. What is the minimum total energy that the system can have? (Neutrons, like electrons, have ant symmetric wave functions. Ignore spin.)
A steady current, I flows through a wire of radius R. Find the magnetic field inside and outside the wire if a uniform current density, K=Ko(z-hat) flows on the surface of the wire, s = R , like in a superconductor.
A Carnot engine extracts 550 J of heat from a high-temperature reservoir during each cycle, compute the efficiency of the engine
Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1.3 mm. What is the resistance ratio RA/RB , measured between their ends
an electron is accelerated from rest through a potential difference 1200 v. give the electrons kinetic energy after
he primary coil of a transformer has N1 = 390 turns, and the secondary coil has N2 = 2 260 turns. what rms voltage is developed across the secondary coil
Your friend, who is exactly the same age as you, travels at a speed of 0.9990c to a star 25 light-years away. How long does she measure for the time she is away
Given: The speed of sound in air is 343m/s. The length of a hollow pipe is 632 cm. The air column in the pipe is vibrating and has four nodes. Determine the frequency of the sound wave in the hollow pipe.
A closely wound rectangular coil of 85.0 turns has dimensions of 26.0cm by 46.0cm. estimate the average emf induced in the coil
A 12 kg block is at rest on a level floor.A 395 g glob of putty is thrown at theblock such that it travels horizontally, hits the block, and sticksto it. The block and putty slide 15 cm along the floor. If the coefficient of sliding friction is 0.40,..
What friction torque is required to reduce angular speed
A 2.0 kg, 30-cm-diameter disk is spinning at 300 rpm. How much friction force must the brake apply to the rim to stop it in 3.0 s? find the force by the definition of torque
Suppose you have a spherical balloon filled with air at room temperature and 1.0 atm pressure; its radius is 18cm. what's the balloon's new radius
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