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The drawing shows three identical rods (A, B, and C) moving in different planes. A constant magnetic field of magnitude 4.50 T is directed along the +y axis. The length of each rod is L = 1.3 m, and the speeds are the same, vA = vB = vC = 2.9 m/s. For each rod, find the magnitude of the motional emf, and indicate which end (1 or 2) of the rod is positive.
The mass of Mercury is 0.0550 times that of earth, and its radius is 0.380 times that of earth, Calculate the average density of Mercury (in kg/m3) given the earth's density is 5.52×103 kg/m3
Consider a charge of +1 nC (nanocoulombs, or Coulombs ×10?9) at (-3, -4) m, and a charge of -2 nC at (12, -5). Calculate the electric field strength at the origin
An electronic device dissipating 30 W has a mass of 20g and a specific heat of 850 J/kgoC. The device is lightly used, and it is on for 5 min and then off for several hours, throughout which it cools to the ambient temperature of 25 o C.
Discuss Waves, Sound, and Light. What is a Wave?
A 155 g copper bowl contains 245 g of water, both at 20°C. A very hot 300 g copper cylinder is dropped into the water, causing the water to boil, with 5 g being converted to steam. The final temperature of the system is 100°C. Neglect energy trans..
A kicker punts a football from the very center of the field to the sideline 36 yards downfield. The magnitude of the net displacement of the ball is 46 yards. What is the direction of the net displacement of the ball
The active element of a certain laser is an ordinary glass rod 19.5 cm long and 1.37 cm in diameter. Calculate its increase in volume
The far point of a nearsighted person is 8.4 m from her eyes, and she wears contacts that enable her to see distant objects clearly. How high is the image formed by the contacts
Consider the 30N weight held by two cables shown below. The left-hand cable is horizontal. What is the tension in the cable slanted
The highest rotary speed ever attained was 2010 m/s (4500 mph). The rotating rod was 15.2 cm (6 in.) long. What is the period of rotation of the rod
A 0.410 kg pendulum bob passes through the lowest part of its path at a speed of 3.13 m/s. What is the tension in the pendulum cable at this point if the pendulum is 76.2 cm long.
A ball is thrown horizontally from a 16 -high building with a speed of 9.0. How far from the base of the building does the ball hit the ground
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