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1. Consider a 1.36 kW short circuit through a 0.075 Ω resistance. What voltage is involved in the short circuit, in volts?
2. a) A parallel-plate capacitor has a capacitance of c1 = 1 μF when full of air and c2 = 47 μF when full of a dielectric oil at potential difference of 12 V. Take the vacuum permittivity to be µo = 8.85 x 10-12 C2/(N · m2).
b) What is the permittivity of this oil in C2/(N · m2).
c) How much more charge A???q in C does the capacitor hold when filled with oil relative to when itAc€?cs filled with air?
A ladder leans against a wall making a 55.0° angle to the floor. The ladder is 4.50 m long, and weighs 415 N. The wall is frictionless and so is the floor. A horizontal wire is attached to the base of the ladder and attached to the wall.
A cannon shoots a rock from the ground at an angle of 31.0° above the horizontal. What is the rock's speed in the horizontal direction just before it hits the ground
By curving different isotopes through paths with different radii, a mass spectrometer can be used to purify a sample of mixed uranium-235 and uranium-238 isotopes. Assume that B = 5.00*10^-3 T, V = 55.0 V, and that each uranium isotope has a 5+ io..
Find the direction of the current if the axial component of the field points away from the viewer
Calculate the net torque about point O for the two forces applied as in the figure below. The rod and both forces are in the plane of the page. Assume that F1 = 7.50N and F2 = 10.0N
there are certain big questions that philosophers have been puzzling over for millennia. amazingly many people ask
An archer's bow is drawn at its midpoint until the tension in the string is 0.835 times the force exerted by the archer. What is the angle between the two halves of the string
An unknown material has a normal melting/freezing point of -26.3 ° C, and the liquid phase has a specific heat capacity of 160 J/(kg · C °). What is the latent heat of fusion of the unknown material
two gear wheels with radius of 25 cm an 60 cm have interlocking teach. How many radians does the smaller wheel turn
Consider an unpolarized lightwave incident from air onto a planar dielectric material of index of refraction 1.50. Calculate the degree of polarization of the transmitted beam in part b above
A 240 N sphere 0.20 m in radius rolls, without slipping 6.0 m downa ramp that is inclined at 28 degrees with the horizontal. What is the angular speed of the sphere
If 100,000 MHz radar waves are incident on a plane coated with a polymer whose index of refraction is n = 1.50, how thick would you make the coating
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