Recent content by en bloc

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    What p(x) should be in shell method

    i thought the same thing, y = 0, but it wasn't given. part (a) of the problem was revolution around the x-axis. i just implicitly assumed it was. so what would p(x) be in this region.
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    What p(x) should be in shell method

    it's the region bounded by y = \sqrt{}x and x = 4
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    What p(x) should be in shell method

    In calculus II, graphing a function and then revolving it around an axis. calculate that volume either by disk/washer method or shell method. and the formula for the shell method is 2\pi \int_{a}^{b} (p(y)h(y))\,dy o:)
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    What p(x) should be in shell method

    Homework Statement y=x^(1/2) x=4 find volume of revolution about the line x=4 this was a test problem and i chose x as p(x) [radius] but now i think that it should've been (x+4). :confused:
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    Trouble completing the square on the integral

    Homework Statement http://c811106.r6.cf2.rackcdn.com/se05h01043.png Homework Equations The Attempt at a Solution The negative sign in front of x^2 is giving me trouble. When i complete the square i get; \sqrt{}-x^2-4x+4 -4 There's some algebra that i don't understand.
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    Rotational Inertia Four point masses problem-diagonal

    Rotational Inertia "Four point masses problem--diagonal" Homework Statement Four point masses of 3.0 kg each are arranged in a square on mass-less rod. The length of a side of the square is .50 m. What is the rotational Inertia for rotation about an axis passing through masses A and C...
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    Inelastic Collision or Conversation of Energy?

    That's a huge mistake on my part. The whole point of conservation of energy is that everything in the system is conserved, so i can't add new mass. Thank you! KE+PE = KE+PE 1/2 * 2.8 kg * v^(2) = 2.8kg * g * 1.5m v=5.42 m/s mv+mv=(m+m)v .5 kg * v + 0 = (2.8kg)5.42 m/s v= 30.4 m/s
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    Nonconservative collision - Work

    Oooooh. That's right. KEf is 0, so equation 1 should've been like this: Wnc= ΔKE + 0 .7 * 1764N * Δx * cos180 = 0 - 1/2 * 180kg * (3.78 m/s)^2 Δx= 1.04m Thanks!
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    Inelastic Collision or Conversation of Energy?

    I'm a bit confused here. Did i get the right answer, but just with not the best approach? And i now see how this speed isn't unrealistically high, thanks.
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    Nonconservative collision - Work

    Homework Statement An 85kg baseball player is running towards home base at 8.0 m/s when he crashes into the catcher who is initially at rest. the two players slide together along the base path toward home plate. If the mass of the catcher is 95 kg and the coefficient of kinetic friction...
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    Inelastic Collision or Conversation of Energy?

    Homework Statement Leonard wants to know how fast he can throw a ball, so he hangs a 2.3 kg target on a rope from a tree. He picks up a 0.5 kg ball of clay and throws it horizontally against the target. The clay sticks to the target and the clay and the target swing up to a height of 1.5m...
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    What to expect in Psych 101 Class

    hopefully your psyche class teaches you to be less anxious, jeez. one reason I'm embarrassed of being a student is because of stuff like this. don't worry about your grades. EVERY lecture i attend, people are always conversing over something to do with their worries about grades. in short you...
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    Go straight to calc based or finish non calc

    integral calculus of functions of one variable in calc I.
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    Go straight to calc based or finish non calc

    It's about time to register for the spring semester in my cc, and I'm not sure whether i should enroll in calc based physics course or finish a second non calc based one. In this semester I am enrolled in a non-calc based general physics course, because I am still working on finishing calc I...
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    Why Are Engineers Viewed as Less Intelligent Than Physics & Math Majors?

    i can't remember a famous quote from a famous scientist, but it goes like, engineers are dilettantes compared to scientists.
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