Recent content by BSElectrician

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    Find the Power to move a car on an incline

    Homework Statement What power is needed to move a 3000lb car up an 8 degree incline with a constant speed of 50mi/h against a frictionless force of 80lb? ans. 68hpHomework Equations P = Fv 1hp = 550 lb-ft/sThe Attempt at a Solution 1st i draw free body diagram summation of force in the...
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    Bunch of questions that may have typographical errors in the answer key

    I have a problem that involves these questions, what i need you to do is to verify if the textbook answers are typographical errors. Ill show my solutions and have to tell me which part i get wrong. Homework Statement 1. A corner lot is 35m on one street and 25m on the other street. The...
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    Optics(Converging lens and Diverging lens)

    is it between the diverging and converging lens? this is how i do to find the image distance of the divergng lens between C lens and D lens (110cm) but there is an image distance q1 from the C lens (120cm) the object distance from the D lens p2 might be (110cm - 120cm)(1/q2) + (1/(110-120)) =...
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    Optics(Converging lens and Diverging lens)

    Homework Statement http://www.imageurlhost.com/images/r0its2lyef7v3s0ppms2.pngHomework Equations Mirror Equation (1/q) + (1/p) = (1/f) = (2/r) Magnification M = (q/p) for two lenses M1 & M2 Total magnification = M1*M2The Attempt at a Solution we have p1 = 40cm and f1 = 30cm then the image...
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    Alternating Current (multiple CHoice)

    Homework Statement An alternating voltage is given by v = 30\sin(314t).The time taken by the voltage to reach 30V for the first time is: A. 0.02s B. 0.03s C. 0.1s D. 0.015s Homework Equations google for equation for instantaneaous current and voltage The Attempt at a Solution 30 = 30sin(314t)...