Estimate the number of electrons involved
Suppose a van de Graaff generator builds a negative static charge, and a grounded conductor is placed near enough to it so that a 11μC of negative charge arcs to the conductor. Estimate the number of electrons involved.
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The convection coefficient is h = 10 W/m2K. Determine the centerline temperature of the beam after an exposure time of t = 6 hours.
Calculate the electric field a distance z from a uniformly charged infinite flat non-conducting sheet by modeling the sheet as a continuum of infinite circular rings of charge. (Use the following as necessary: s and e0.)
Two positive point charges Q1 = 16 micro Coulombs and Q2 = 4 micro Coulombs are seperated in a line by a distance of 3 meters. Find the spot on the line bewteen the charges where the electric field is zero.
Calculate the equilibrium concentrations of all species and the pH in a solution where Co(OH)2 is prepared by mixing 100.00 ml of 1.000 M Co(NO3)2 (aq) and 1000.00 ml of 5.000M NH3(aq)
How many kilogram of methane gas must be discharged in a room of 306 cubic meters to reach the lower explosive limit of 5 volume percent?
What is the Coulomb force on the charge at the origin due to the presence of the other two charges?
Estimate the steady-state heat loss from the pipe (in W/m) when the oil is at 90 degrees Celcius. Ignore the inside thermal resistance.
Plot the cost versus r for 2 ≤ r ≤ 10 m, and determine the radius that results in the least cost. Compute the corresponding height h.
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