Recent content by Timothy G

Just threw together a new aquascape today. Was a bit bored. :) YES, they're all real, supplied with T5HO lighting, CO2 at 2bps, SeaChem Flourish, ADA AquaSoil, and Eco- Complete. http://www.flickr.com/photos/33828267@N06/4337983861/ thanks guys! i'm only 15 :P got started when inspired...

A) You can observe cyclic Doppler shifts of the spectral lines in a spectroscopic binary. B) You can observe the orbits of both stars in a visual binary. C) One star periodically blocks the light from its companion star in a spectroscopic binary. D) You can only observe the orbit of one star in...

Peter and Paul bet one dollar each on each game. Each is willing to allow the other unlimited credit.Use a calculator to make a table showing, to four decimal places, for each of p =1/10, 1/3, 0.49, .499, 0.501, 0.51, 2/3, 9/10 the probabilities that Peter is ever ahead by $10, by $100, and by...

A sinusoidal voltage ?V(t) = (40.0 V) sin(100t) is applied to a series RLC circuit with L = 170 mH, C = 99.0 µF, and R = 78.0 . (a) What is the impedance of the circuit? (b) What is the maximum current? (c) Determine the numerical values for Imax, ?, and ? in the equation i(t) = Imax sin(? t - ?).

A series RLC circuit has a resistance of 45 ohm and an impedance of 75 ohm. What average power is delivered to this circuit when Vrms=210V? Answer P = 352.8 W

All 4 parts to this question concern the assertion P = {x=2**K & N>K} and one of 4 different assignment statements. You are to supply the missing assertions Q1, Q2, Q3, and Q4. Note that Q1 and Q2 should be the weakest preconditions for P with respect to the given statement; Q3 and Q4 should be...