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A hollow cylindrical wire carries a current I in the negative z direction (into the page). The current is uniformly distributed.
1.What is the current density (i.e., current per unit area of the wire)?
2.What is the magnetic field at the center (Q) of the cylindrical bore?
A cork on the surface of a pond bobs up and down two times per second on ripples having a wavelength of 8.00 cm. how long does it take a ripple passing the cork to reach the shore
Light of frequency 6.0 x 10^14 hertz strikes a glass/air boundary at an angle of incidence θ1. The ray is partiallyreflected and partially refracted at the boundary, as shown above.The index of refraction of this glass is 1.6 of this frequency. De..
A paperweight, when weighed in air, has a weight of W =4.19 N. When completely immersed in water, but, it has a weight of Win water = 3.01 N. Discover the volume of the paperweight.
When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 7.77 g of C6H6 is added to 5.69 kg of water at 21.0°C, what is the final temperature of the water?
What is the angular speed of a rotating wheel that has a moment of inertia of 0.330 kg.m^2 and a rotational kinetic energy of 2.75J
A photon with a 300 nm wavelength Compton scatters off a target and deflects by an angle of 25 from the incident direction. What is the wavelength of the photon after the Compton scatter
A weightless rod, with length d = 6.0 m, supports three weights with masses m1 = 4 kg, m2 = 8 kg, and m3 = 9 kg as shown. Where is its center of gravity?
A bungee jumper (m = 73.00kg) tied to a 48.00m cord, leaps off a 78.00m tall bridge. He falls to 6.00m above the water before the bungee cord pulls him back up. What size impulse is exerted on the bungee jumper while the cord stretches?
When two tuning forks of 146Hz and 161Hz, respectively, are sounded simultaneously, how many beats per second are heard.
An iron rod of diameter 2.6 cm and length 80.0 cm is to be inserted inside a long solenoid to make an electromagnet. how many turns of wire will be needed for the solenoid
A skier starts from rest at the top of a hill. The skier coasts down the hill and up a second hill. What must be the height of the first hill so that the skier just loses cintact with the snow at the crest of the second hill
A typical photovoltaic cell delivers 4.2×10-3 W of electric energy when illuminated with 0.12 W of light energy. What is the efficiency of the cell? An "energy bar" contains 27 g of carbohydrates. If the energy bar was his only fuel, how far could..
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