Recent content by scurry18

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    Unknown Organic Chemicals Distinction

    It asks to distinguish between different samples of each. They are NOT mixed together.
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    Unknown Organic Chemicals Distinction

    Homework Statement Use a flow chart to distinguish between: 1-hexene, cyclohexanol, 1-bromobutane, 1-propanol, 2-hexene, 1-hexyne, 2-bromopentane, 3-methyl-3-hexanol, 3-bromo-3-methylhexane by using a positive and negative test by adding other compoundsHomework Equations N/AThe Attempt at a...
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    Twin Paradox and Time Travel (Special Relativity)

    Just the above equation and length contraction
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    Finding the Critical Velocity for Special Relativity Effects

    I got it! Thank you!
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    Finding the Critical Velocity for Special Relativity Effects

    Homework Statement For what value of v does Gamma (G) =1.0100? Observe that for speeds lower than this value, time dilationand length contraction are effects amounting to less that 1% Homework Equations L=Lp/G=Lp(1-(v^2/c^2))^2 The Attempt at a Solution I do not know where to...
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    Twin Paradox and Time Travel (Special Relativity)

    I'm really unsure on how to figure that out.
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    Twin Paradox and Time Travel (Special Relativity)

    Homework Statement Identical twins Speedo and Goslo join amigration from the Earth to Planet X. It is 20.0 light years away in a reference frame in which both planets are at rest. The twins, of the same age, depart at the same time on different spacecraft s. Speedo's craft travels steadily at...
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    Roller coaster and Potential Energy

    My bad! Either way, I don't get the right answer though :)
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    Roller coaster and Potential Energy

    That still does not give me the right answer even if I divide by 1000.
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    Roller coaster and Potential Energy

    Homework Statement A 1000 kg roller coaser train is intially at the top of a rise, at point A. It then moves 135 ft, at an angle of 40 degrees below the horizontal, to a lower point B. Choose the train at point B to be the zero configuration for gravitational potential energy. Find the...
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    Finding the Change in Kinetic Energy of a Box on a Rough, Horizontal Floor

    Homework Statement A 40.0kg box initially at rest is pushed 5.00 m along a rough, horizontal floor with a constant applied horizontal force of 130 N. The coefficient of friction between box and floor is .300. Find the change in kinetic energy of the box. Homework Equations...
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    How Much Work Does It Take to Pull a Skier Up a Slope?

    Homework Statement A skier of mass 70.0 kg is pulled up a slope by a motor-driven cable. How much work is required to pull the skiera distance of 60.0m up a 30 degree slope (assumed frictionless) at a constant speed of 2.00 m/s? Homework Equations W=F (delta)r cos(theta) The...