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1. A polyester fleece sweater in a clothes dryer will acquire a static charge in the hot, dry environment of the dryer. When you reach into the dryer to get the garment, it is common to feel the hairs on your arms standing up. It would not be unusual to take a fleece sweater out of the dryer and find a sock stuck to it. There may be a crackling noise when the sock is pulled off. Explain these effects.
2. What does the voltage of a battery measure? Why would high voltage batteries be neccessary in some situations?
3. What is a short circuit? Why is a short circuit dangerous?
Four capacitors are connected to a battery as shown below. The voltage V delivered by the battery is unknown. Capacitor C1 acquires a charge of magnitude |Q1|=15 nC=15*10^-9 C on each of its plates. What is the equivalent capacitance of the circuit..
a roller-coaster car has a mass of 1170 kg when fully loaded with passengers. as the car passes over the top of a
A transformer is designed to change 120 V into 10,000 V, and there are 164 turns in the primary coil. How many turns are in the secondary coil
A magnetic field of 2.00T is applied to a bubble chamber to make the tracts of protons, what is the momentum of the proton
q1. the international space station orbits the earth at the average altitude of 362 km. assume that its orbit is
A completely inelastic collision occurs among two balls of wet putty that move directly toward each other along a vertical axis. Just before the collision, one ball, of mass 3.0 kg, is moving upward at 20 m/s and the other ball, of mass 2.0 kg, is mo..
questiona solenoidal coil with 24 turns of wire is wound tightly around another coil with 350 turns. the inner solenoid
The x-ray beam intensity is 1.50 W/m2, the area of the chest exposed is 0.0750 m2, 35.0% of the x-rays are absorbed in 20.0 kg of tissue, and the exposure time is 0.250 s.
A clear optical window made out of plastic (n=1.4) is coated with a hard antiscratch coating having n = 1.8. What should be the smallest thickness of this coating to maximize the amount of light reflected in the green partof the spectrum (for λ = ..
as the cord unravels from the wheels inner hub the angular velocity of the outer hub 2 rads. determine the magnitudes
A burst of 1 x 109 neutrons from a pulsed accelerator is introduced into a subcritical assembly consisting of an array of natural uranium rods in water. How many first generation fissions do the neutrons produce
A skateboarder, with an initial speed of 4.4 m/s rolls virtually friction free down a straight incline of length 16 m in 3.3s. At what angle is the incline oriented above the horizontal
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