Define the effective resistance
The edges of a cube consists of equal resistors of resistance R, which are joined at the corners. Let a battery be connected to two opposite corners of a face of the cube. What is the efective resistance?
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A 5 m glass rod and lead rod bothn at 15° C. The lead rod is heated to 55° C. To what temperature must the glass rod be heated so that they are again at the same length?
Light of wavelength 466 nm is incident normally on a film of water 1.0 µm thick. The index of refraction of water is 1.33. (a) What is the wavelength of the light in the water?
Each of two very long, straight, parallel rods carries a positive charge of x coulombs per meter. The distance between the rods is d. Find the electric field at a point equidistant from the rods, with a distance 2d from each rod. Also, what dir
What is the ratio of the final kinetic energy of the system to the initial kinetic energy? What is the ratio of the mass of the more massive object to the mass of the less massive object?
(a) with what upward velocity is the rock shot, (b) what maximum height above the top of the building is reached by the rock, and (c) how tall is the building?
A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 85.0 km/h, 7.0 min at 70.0 km/h and 50.0 min at 60.0 km/h, and spends 40.0 min eating lunch and buying gas. (a) Det
Estimate the rate at which the matter falls into the Cygnus A's supermassive black hole. Express your answer as the number of solar masses per century.
Two large, parallel, metal plates carry opposite charges. They are separated by 0.1 m and the potential difference between them is 500. V. a) What is the magnitude of the electric field, if it is uniform in the region between the plates? N/C
Calculate the maximum force constant of the spring k_max that can be used in order to meet the design criteria.
A 120-m long steel wire has a coefficient of linear exspansion of 11x10^-6 /Celcius. give its change in length as the temperature changes from 10 degrees celcius to 45 degrees celcius. show work.
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