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A horizontal wire of 0.52 m carrying a current of 8.2 A is placed in a uniform external magnetic field. When the wire is horizontal it experiences a magnetic force. When the wire is tilted upward at an angle of 19 deg it experiences a magnetic force of 4.50 x 10^-3 N. Determine the magnitude of the external magnetic field?
We drop a 26-g ice cube (0C) into 1000 g of water (20C). Find the total change of entropy of the ice and water when a common temperature has been reached
Find out the intensity if the frequency is increased to 2.90 kHz while constant displacement amplitude is maintained.
A long, straight wire runs along the y-axis. The wire carries a current in the positive y-direction that is changing as a function of time according to i = 8 A + (0.2 A/s)t. A loop of wire is placed in the xy-plane near the y-axis. The loop has di..
A mass-spring system oscillates with an amplitude of 5.60 cm. If the spring constant is 226 N/m and the mass is 453 g, determine the mechanical energy of the system
why the mass of the dishwater is large enough. If vector B is added to C = 2.0 ihat + 3.0 jhat, the result is a vector in the positive direction of the y axis, with a magnitude equal to that of C. What is the magnitude of vector B.
How much kinetic energy will an electron gain (in joules) if it accelerates through a potential difference of 1.30×104V
Write at least one paragraph in which you define focal length, object and image distance and magnification. Explain the difference between real and virtual images
A uniform 1.3-kg rod that is 0.76 m long is suspended at rest from the ceiling by two springs, one at each end of the rod. Find the angle that the rod makes with the horizontal
While on a vacation to Kenya, you visit the port city of Mombassa on the Indian Ocean. Calculate the muzzle velocity necessary to hit a pirate ship 300 meters from the base of the fort
A small but measurable current of 7.4 x 10-10 A exists in a copper wire whose diameter is 2.9 mm, calculate the current density and electron drift speed
Compare the kinetic energy of car travelling. Compare the kinetic energy of an 900 kg car travelling at 30 m/s, and a 1,800 kg car at the same speed.
A cardinal (Richmondena cardinalis) of mass 3.60×10-2 and a baseball of mass 0.146 have the same kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of baseball's momentum.
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