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A circular loop of wire is oriented so that its normal is perpendicular to the earth's horizontal magnetic field (B = 2.87 x 10^-5 T). A correctly operating compass is placed at the center of this loop. When a current of 9.54 A is sent through the loop, the compass needle rotate by 60.0 degrees. Calculate the radius of the loop.
High-speed stroboscopic photographs show that the head of a 220-g golf club is traveling at 42 m/s, Find the speed of the golf ball just after impact
A 188.0 g piece of lead is heated to 81.0oC and then dropped into a calorimeter containing 692.0 g of water that initally is at 21.0oC.
An ocean liner leaves New York City and travels 43° north of east for 189 km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions.
A duck flying horizontally due north at 14.8 m/s passes over Atlanta, What is the magnetic force acting on the duck
A jet flying at 125 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, Calculate the magnitude of the necessary lifting force
What are the size and direction of the change in velocity if the initial velocity is 6 m/s south and the final velocity is 2 m/s west?
You swing a 2.60 kg stone in a circle, using the full length of a thin 60.0 cm rope. At what speed must you swing it so its acceleration will be 9.8 m/s^2.
In extremely cold weather conditions where the inside thermostat is set to 27 C and the outside temperature is -20 C, your 1200 square ft house might lose heat through the walls at a rate of 4000 W. How much energy might you lose in one week?
A Force F= (6xi+ 5yj), where F is in newtons and x and y are in meters, acts on an object as the object moves in the x direction, Find the work W = integral (F · d vector r) done by the force on the object
When monochromatic light shines perpendicularly on a soap film (n = 1.33) with air on each side, What is the vacuum wavelength of the light
0.023mol of a diatomic gas, with initial temperature 25?C, How much heat is added during this process
Suppose you see two main-sequence stars of the same spectral type. Star 1 is dimmer in apparent brightness than Star 2 by a factor of 100. What can you conclude? (Overlook any effects that might be caused by interstellar dust and gas.)
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