Recent content by gc33550

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    The Heating of Nichrome Wire in a toaster

    would that constant be in my physics book somewhere?
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    The Heating of Nichrome Wire in a toaster

    C as in capacitance? How do I find that?
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    The Heating of Nichrome Wire in a toaster

    So am I going to be looking at resistivity then? such as \rho=R*A/L ??
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    The Heating of Nichrome Wire in a toaster

    Homework Statement A toaster with a Nichrome heating element has a resistance of 70 ohms at 20oC and an initial current of 1.6 A. When the heating element reaches its final temperature, the current is 1.39 A. What is the final temperature of the heating element? Homework Equations V=IR...
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    Acceleration of an electron in a constant electric field

    Homework Statement An electron, starting from rest, is accelerated by a uniform electric field of 4 104 N/C that extends over a distance of 7 cm. Find the speed of the electron after it leaves the region of uniform electric field. Homework Equations F=(q1q2)/r^2 and maybe the Work...
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    Equilibrium of Charges using Coloumbs Law

    Thanks for your Input. Yes I realize it is one dimensional so hear is what I have so far: (I will define 1 as the negative charge and 2 as the positive and e will be the electron) F_1e=k*((-.5muC*e)/R_1e^2) F_2e=k*((12muC*e)/R_2e^2) to find equilibrium: F_1e= F_2e I am then left...
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    Equilibrium of Charges using Coloumbs Law

    Homework Statement A point charge of -0.5 C is located at the origin. A second point charge of 12 C is at x = 1 m, y = 0.5 m. Find the x and y coordinates of the position at which an electron would be in equilibrium. Homework Equations F=k*((q_1*q_2)/r^2) The Attempt at a Solution...
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    A Rocket's Distance from the center of the moon

    By the way I got it thanks guys... Those negative signs will get you every time haha
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    A Rocket's Distance from the center of the moon

    Maybe my brain is physics fried haha But which Variables need to be negative and why? Is it both potentials? I thought the would have positive potential energy or is it the fact that it is in the negative direction? Oh boy I am going to fail haha
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    A Rocket's Distance from the center of the moon

    Could I get a short explanation on that? I don't follow your variables
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    A Rocket's Distance from the center of the moon

    I am assuming that there is no kinetic in my final state because the rocket doesn't have enough velocity to escape according to sqrt(2GM/r) so then: (GMm/r_final)=.5mv^2+GMm/r_initial r=GMm/(.5mv^2+(GMm/r_initial)) r= 6.7E-11*7E22*10/(.5*10*500^2+((6.7E-11*7E22*10)/1.75E6)) r=1.672e6...
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    A Rocket's Distance from the center of the moon

    So is there something I am missing I thought a simple energy conservation would cover it
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    A Rocket's Distance from the center of the moon

    r=(2GM)/v^2 is what i believe I worked it out to so r=(2*6.7E-11*7E20)/500^2 r=3.752E5 According to the answer key it is supposed to be 1.84E6
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    A Rocket's Distance from the center of the moon

    I didn't get the right answer...
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