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An earthed conducting sphere of radius a is fixed in space, and a particle P, of mass m and charge q, can move freely outside the sphere. Initially P is a distance b ( > a) from the centre O of the sphere when it is projected directly away from O. What must the projection speed be for P to escape to infinity?
[Ignore electrodynamic effects. Use the method of images to solve the electrostatic problem.]
Sketch the graphs of both f (t) and the periodic function represented by the series expansion for -2 t 2.
A certain thermocouple has a time constant of 1.2 s. Design a compensation network like that shown in Fig. 8.34 having a steady-state attenuation factor of 8. Select the value of the resistance so that the capacitor has an even multiple value.
Determine the observed F value. Compare it to the critical table F value and decide whether to reject the null hypothesis. Perform a t test for independent measures on the data. Compare the t and F values. Are the results different? Use a = .05.
air enters an adiabatic turbine at 408ordmc and 1.3 mpa and leaves at 56 kpa. if the isentropic efficiency of the
Determine the tangential force F and the normal force N acting on the collar when u. = 45°, if the force F maintains a constant angular motion u = 2 rad>s.
a construction crew lifts about 560 lb of material serveral times during the day from a flatbed truck to a 32 foot
Determine the range of air velocities that would be required for the wind tunnel if Reynolds number similarity is desired. Are the velocities suitable? Explain.
Determine the heat transfer rate and the entropy production rate for the steady state, steady flow of water flowing through a straight horizontal 1.0 in. inside diameter pipe 10.0 ft long at a rate of 5.00 ft3 /min.
the composition of the first solid to form during solidification,
Calculate all the gear ratios. if 22.1 kw is transmitted in 1st gear at an engine speed of 3000 rpm, Evaluate the required fixing torque on the annulus
The yearly average solar flux incident on a horizontal surface in the United States is about 180 W/m2. The average total energy demand in the United States is approximately 100 quads (100 × 1018 ) per year. Assuming an average efficiency of PV cells ..
An alloy at 1000°C is 3% carbon by weigm. what are me compositions and fractions of austenite (γ) and cementite (iron carbide) in the mixture?For lead-tin (Pb-Sn) alloy, answer the following questions. Use the space provided below to show all calcu..
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