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a 12,000 volt line produces 100,000 watts with a current of8.3 amps. If the voltage were only 240 volts, what would be the power expended as heat if the resistance is 10 ohms? Should bearound 69000 watts.
The total electric flux coming out of a cubical box, that is 28.0 cm on a side, is 94 GNm^2/C, How many coulombs of charge are enclosed by the box
A tiny drop of dye is put in a very still tub of water, calculate the average distance traveled and the standared deviation after: one step, one minute and one year (3.17x10^7 sweconds)
A racing dog is initially running at 18.0 , but is slowing down. By what fraction has its kinetic energy been reduced
A 4 m long rope weighing 1.4 N is stretched so that the tension is 10 N. The left end is then made to oscillate vertically at 4 Hz by shaking the rope up, What is the speed of the traveling waves on the rope
A particular wire has a diameter of 1.7 mm and length of 1.3 m. If its resistance is 15 m?, what is the resistivity of the metal from which it is made
An ideal, monatomic gas is allowed to expand quasi-statically and adiabatically, What is the work done by the gas and What is the change in the internal energy of the gas?
The particle then begins to move. Find out the speed of the alpha particle after it has moved through a potential difference of −3.45×10−3 V.
A wooden raft has a mass of 90 kg. When empty it floats in water (density 1000 kg/m3) with 67% of its volume submerged. What mass of sand can be put on the raft without it sinking
A 2.90 102-N force is pulling an 90.0-kg refrigerator across a horizontal surface. The force acts at an angle of 17.0° above the surface. Find the work done by the pulling force
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 46.0 cm. What is the value of the acceleration of gravity on this planet
On a planet in a solar system far from ours, you release a rock from rest at a height of 12.0 m above the surface of the planet, What is the mass of the planet
An unmarked police car, travelling a constant 94 km/h, is passed by the speeder travelling 153 km/h. precisely 0.70 s after the speeder passes, policeman steps on the accelerator. If the police car's acceleration is 2.30 m/s^2, how much time elapses ..
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