Question 1. A force Pocos(ot-/2) acts on xo-50mm, o 62.8 rad/sec. How much work is done () in the first second and (i) in the first 1/40th second? a body with a motion x X sin(cot +/3). Po= 20N, 62.8 P*(dx/dt d(ot) W 1/o Hint2: The approximate answer for ) is 30J. Hintl: you will need to use: - Question 1. A force Pocos(ot-/2) acts on xo-50mm, o 62.8 rad/sec. How much work is done () in the first second...
2. Sketch the function cos[w(t-v) overwz/u for value at-0, π/4,π/2,3%,π. (one diagram for cach ot) Esplain how this can be regarded as a propagating wae Repeat this procedure for cos co e 2. Sketch the function cos[w(t-v) overwz/u for value at-0, π/4,π/2,3%,π. (one diagram for cach ot) Esplain how this can be regarded as a propagating wae Repeat this procedure for cos co e
Calculate thevenin impedance at terminals a-b 1 Н 152 w V.cos(ot+8) 1 F
A certain region currently has wind tarms capable ot generating a total ot 2800 megawatts (2 8 gigawatts) of power Complete parts (a) and (b) belouw อ. Assuming wind arms ypical y genera e 40 o her capacity how much energy kilowatt hours. can he egion's wind farms gener te n one ear? Given het e avereg. household in theregion uses อbout 10.000 kilowatt hours o energy each year, how many households can be powered by these wind farms? The...
b. Fem E has net income ot$8,000 sa es ot$12 0 000, and ROI of ร6% Cak dale t etrms turnover and avera e tota a sets Do not round intermediate calculations. Round n moer answer to 1 deci al place 1 827 200 and tunover of 1 4 Cakulale the s sates,magm and net income (De not round inerneedate calcutations, Round "Margin answer to 1 decimal place Sales Reterences eBook& Resources
(a) What w the magnitude of the teration ot sach blockr (h) What is the recion of the eceleration ot m my accsterates dware (c) what is the magnin.de dİhe tension in the cord? Addtienal Materiale Section53 The floor of a raioad fatcar ie aded with locse crates having a coeficiens of static tr the floor If the train is ineiely moving at ae speed of 4 stopped at constant accalerathn wthos causing the cates to stide over the floor?...
aj Fint Lafla c e Transform ot citev, t: 200+ 2?
5. (a) Write an ODE to which (x - 2)e-ot is a solution. (Hint: Think what the roots of the characteristic equation would need to be.) (b) What is the lowest order of linear homogeneous ODE (with real coefficients) for which (3-2)e cosa is a solution? (Give the order, not the ODE.) Explain briefly.
8. The second law of thermodynamics states that A) Delta E=g+w B) Delta H^ 0 rrn =Sigma nDelta H^ f(products)-Sigma mDelta H^ f(reac reactants) C) for any spontaneous process, the entropy of the universe increases D) the entropy of a pure crystalline substance is zero at absolute zero E) Delta S=q rcv /T at constant temperature D) zero E) the same as the energy, E 8. The second law of thermodynamics states that A) AE - 9+ w B) AHørxn...
2. Verify the conversion factors (a) 1 Btu/ft2-hr 3.1525 W/m2 (b) 1 Btu/hr -0.292 875 W (c) 1 Btu/hr ft. F -1.729 W/m-K ot 16t 105935