Recent content by Elixer

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    Book suggestions for Java and Electronics

    Can you please suggest some good books a learning Java and electronics? I have learned C++ and I plan to learn Java now. I also want to begin learning electronics by myself. Thank you Elixer
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    Oscillations - A puzzling demonstration

    So the ball has an angular momentum as well. But , consider the following The ball on the circular track has an angular velocity w = squareroot(g/R)[where R = radius of circular path ,g = acceleration due to Earth's gravity] So, as the radius of the path the ball travels decreases, w...
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    Oscillations - A puzzling demonstration

    I watched MIT OCW PHYSICS 8.01 lectures, and in lecture no.13, i saw a puzzling demonstration. Link :http://ocw.mit.edu/OcwWeb/Physics/8-01Physics-IFall1999/VideoLectures/detail/embed13.htm" I don't understand, what can be the reason for the oscillations of ball on the track with the...
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    Projectile Motion: Analyzing a Volleyball Jump Spike at Different Angles

    Thank you so much! That points out the importance of signs and vector diagrams. Yes, so the equations are: CASE 1: angle = 18o -2.3 = -6.18t -4.9t2 t = 0.3s ux = ucos(18o) = 19.02m/s so, s1 = 19.02 * 0.3 = 5.706 m CASE 2: angle = 8o -2.3 = -2.78t - 4.9t2 t = 0.46s ux = ucos(8o)...
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    Projectile Motion: Analyzing a Volleyball Jump Spike at Different Angles

    Homework Statement In a jump spike, a volleyball player slams the ball from overhead and toward the opposite floor. Controlling the angle of the spike is difficult.Suppose a ball is spiked from a height of 2.30 m with an initial speed of 20.0 m/s at a downward angle of 18.00o. How much farther...
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    AP Calculus BC Test: Tips, Revision & Important Topics

    Hello! I am writing the AP CALCULUS BC test on 5 May, 2010.All the best to all people who are writing their AP tests. Does anybody have any tips/ suggestions for revision or some ideas about really important/expected topics? Thank you. Elixer
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    Is There a Free Alternative to Autocad for Mechanical Drawing?

    Hi! (I hope I am posting in the right forum.) I want to learn mechanical drawing using AUTOCAD. But I can't purchase the software. Can someone , please, please suggest an open source / free alternative ? I know I will use AUTOCAD in college , I want some practice in drawing and an idea...
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    Word to PDF: Convert Wrd to PDF w/ XP, Vista Compat.

    You can download this software - http://www.filehippo.com/download_pdfcreator/" It is legally free and useful.
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    Slope of normal to a given function's inverse

    So, (4,0) lies on the graph of f-1(x), y = f-1(x) dy / dx = 1/(4y + 20e(5y)) Hence , slope of f-1(x) , dy / dx = 1/20 which implies , slope of the normal to the graph = -1 /(1/20) = -20 Ans = -20 Am I correct? Thanks a lot!
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    Slope of normal to a given function's inverse

    Homework Statement f(x) = 2x2 + 4e(5x) is invertible. Give the slope of the normal line to the graph of f-1 at x = 4. Homework Equations (Given in question) The Attempt at a Solution I don't know how to solve this question. But , I found the following:- f(4) = 32 + 4e20 let y...
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    AP PHYSICS C: Solving problems

    Can somebody please reply? Thank you.
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    AP PHYSICS C: Solving problems

    Is it advisable to solve problems from Irodov and Resnick , Halliday , Walker for AP PHYSICS C :MECHANICS AND ELECTRICITY & MAGNETISM ? I am self-studying, so any website links to practice problems(except Collegeboard) will be really helpful, please. Thank you.
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