Recent content by lilaznjewel

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    Length of the wire that is inside the magnetic field

    Homework Statement The magnetic force acting on a wire that is perpendicular to a 5.3 T uniform magnetic field is 6.5 N. If the current in the wire is 5.0 A, what is the length of the wire that is inside the magnetic field? Answer in units of m.Homework Equations F = B . I . LThe Attempt at a...
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    Resistance depending on temperature

    I don't really understand what you are trying to say
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    Resistance depending on temperature

    ok i put in -34.22 but, it is still wrong
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    Resistance depending on temperature

    To has 3 Ro has 4 R has 3 alpha has 4
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    Resistance depending on temperature

    yes do you think it could be wrong because of sigfigs so it be -34.22
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    Resistance depending on temperature

    Homework Statement At 30.3C, the resistance of a segment of gold wire is 124.9 omega When the wire is placed in a liquid bath, the resistance decreases to 97.5 omega What is the temperature of the bath? The temperature coefficient for gold is 0.0034 (C)−1 at 20C. Answer in units of C...
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    How Does Dancer Movement Affect the Center of Gravity on a Dance Floor?

    omg I am so stupid. Thank you for pointing out my mistake!
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    How Does Dancer Movement Affect the Center of Gravity on a Dance Floor?

    Homework Statement Given: A flat dance floor of dimensions ℓx = 19 m by ℓy = 23 m and has a mass of M = 1600 kg. Use the bottom left corner of the dance floor as the origin. Three dance couples, each of mass m = 150 kg start in the top left, top right, and bottom left corners. What is the...
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    What is the potential energy of a board placed on the edge of a roof?

    Homework Statement A carpenter places a board weighing 22 lb on the edge of the roof 28 ft above the ground. How much potential energy does the board have in relation to the ground? Answer in units of ft · lb. Homework Equations PE=mgh The Attempt at a Solution I followed the...
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    Applied force on two blocks on a horizontal frictional plane

    would you find that simply by multiplying mass times acceleration of the 2kg block?
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    Applied force on two blocks on a horizontal frictional plane

    ok for the 8kg block i got 39.30N the problem that i am having for the 2kg block is that i do not no what Force I am solving for that is pulling the block is it Fcos60 like the previous one or is it the tension of the string
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    Applied force on two blocks on a horizontal frictional plane

    what do i use for the force against friction for the block being pulled?
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    Applied force on two blocks on a horizontal frictional plane

    Homework Statement Two blocks connected by a string are pulled across a rough horizontal surface by a force applied to one of the blocks. The acceleration of gravity is 9.8 m/s2 . 1st block = 2 kg 2nd block = 8 kg Force on second block at 52◦ μ = 0.29 [ 2kg ]-------[ 8kg ]/ 52 degrees If each...