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Two conducting rails 30cm apart rest on a 5.0(degree)ramp. They are joined at the bottom by a 0.60 ohm resistor,and at the top a copper bar of mass, 0.040kg is laid across therails. The hole apparatus is immersed in a vertical 0.55 Tfield. What is the termal velocity of the bar as it slidesfrictionless down the rails?
A sledge loaded with bricks has a total mass of 18.0 kg and is pulled at constant speed by a rope inclined at 19.6° above the horizontal. How much work is done by the rope on the sledge
A spherical shell has an outside radius of 2.45 cm and an inside radius of a. The shell wall has uniform thickness and is made of a material with density 4.74 g/cm3. What is this maximum mass
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. Calculate the mass of the aluminum cup
A -7-nC point charge is located at the center of a conducting spherical shell. The shell has an inner radius of 2 m, an outer radius of 4 m, and a charge of +7 nC. (Let the radially outward direction be positive.) What is the electric field at r = ..
To celebrate a victory, a pitcher throws her glove straight upward with an initial speed of 6.5 m/s, How long does it take for the glove to return to the pitcher
A passenger car traveling due east at 53.6 m/s passes a truck traveling due east at 13.4 m/s. What is the frequency heard by the driver of the car
When a 24.0-? resistor is connected across a 12.0-V battery, a current of 482 mA flows. What is the resulting terminal voltage of the battery
A juniper-wood plank measuring 0.36 ft by 1 ft by 15 ft is totally submerged in water. What is the size and the direction of the net force on it
find the velocity of the falling parachutist. assuming the initial velocity is zero the mass is 68.1kg,drag is 12.5 kg/s, gravity is 9.8m/s2 and the time is 10s
A 1.5 kg object has a velocity of 5j m/s at t=0. It is accelerated at a constant rate for five seconds after which it has a velocity of (6i+12j) m/s
An x-ray tube is operated at 45000 V. Find the minimum wavelength of the radiation emitted by this tube
Two identical diverging lenses are separated by 18 cm. The focal length of each lens is -8.0 cm. Determine the final image distance relative to the lens on the right
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