Recent content by AtomicBoom

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    Solve for mass of a second object in a momentum question

    Oh right, okay. When I make N positive and S negative and solve it, I get around the right answer. Thank You!
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    Solve for mass of a second object in a momentum question

    Homework Statement Two objects collide head-on, and are stuck together after collision. Find mass of second object. Givens: m1 = 120 kg v1 = 12 m/s(N) m2 = ? v2 =18 m/s (S) v' = 4.0 m/s (S) Homework Equations m1v1 + m2v2 = m1v1' + m2v2' v'= (m1v1 + m2v2) / (m1+m2) The Attempt at a Solution...
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    Solve Spring Force/Energy: Find Velocity

    It said in the question that the spring undergoes simple harmonic motion, and achieves a maximum velocity of 1.5m/s.
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    Solve Spring Force/Energy: Find Velocity

    I have a question that asks to find the velocity of the object attached to a horizontal spring when it is halfway to equilibrium. I am given the mass, how far the spring was stretched, and the velocity of the spring when it was released. I am unsure of what it means by halfway to equilibrium...
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    How can tannic acid be used for a fabric to retain dye?

    The dye is Malachite green specifically. I understand that tannic acid has many hydrogen bonds making it very polar, but i don't understand how it is a mordant between a fibre and the dye. Any help is much appreciated.
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