Recent content by rumaithya

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    Physics Experiment Question; Projectile Motion

    Hello, I have a question that says' Derive an equation for calculating the theoretical range. I did like half of it, I got t = sqrt[ (2y) / a ] from the kinematic equation ( X = X0 + V0 t + 1/2 a t^2 ). How would I find the theoretical range after this? And how to prove that the...
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    Acceleration Comparison: Basketball vs. Tennis Ball

    Different in acceleration? Hello, I'd like to know what's the different between an acceleration of a basketball and the acceleration of a small ball(tennis ball) when we drop the balls... I think they will not be the same, but why? is it because of the weight?
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    Significant Figures problem help

    Hello, I've found this question in my book and I'm interested to know how to solve this problem. Can anyone help? _____ A sidewalk is to be constructed around a swimming pool that measures (10.0 +- 0.1 )m by (17.0 +- 0.1)m. If the side walk is to measure (1.00 +- 0.01)m wide by (9.0 +- 0.1) cm...
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    What are the confusing questions about structural I beams and cones?

    hello, thanks for replaying. 1) (a) I know that o = m/v and the density is given but I couldn't find the volume from the diagram. that's a weird diagram. I don't see a measurement for depth either. All i know is to find the volume of each rectangle and add them. then solve for the mass...
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    What are the confusing questions about structural I beams and cones?

    Two confusing questions :( Hello, I have two questions but I'm getting confused with them. Can someone help me please ? ____ 1) A structural I beam is made of steel. A view its cross-section and its dimensions are shown in: http://web.csuchico.edu/~ma260/physics/phys.jpg The density of...
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    Calculate Mass of Material for Hollow Spherical Shell

    What is the volume of r1 and r2 ?! there isn't any given numbers
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    Calculate Mass of Material for Hollow Spherical Shell

    Hello, How can we find the mass of a material with density p is required to make a hollow spherical shell having inner radius r1 and outer radius r2 ? Thanks
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    Optimize Positive Number Sum of Number & Reciprocal

    Oh calculus is going to make me feels sick :)
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    Optimize Positive Number Sum of Number & Reciprocal

    thank you. I was thinking about that before.. In the graph it shows that x = +- 1 but x is +1 when it's local minimum, and x is -1 when it's local maximum. So the answer would be x = -1 Am I right ?
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    Optimize Positive Number Sum of Number & Reciprocal

    How to find a positive number such that the sum of the number and its reciprocal is as small as possible ?
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    Problem with a limit as infinity

    Hello, There is a question in Calculus By James Stewart (5e) that says: Find the horizontal and vertical asympotes of y = \frac{x^2 + 4}{x^2 - 1}} I put it in limit as \lim_{\substack{x\rightarrow \infty}} \frac{x^2 + 4}{x^2 - 1}} and divided the numeratir abd denominator byx^2...
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    Loc Max, Min, increase & decrease

    Hello, I have a question about these things What is the local Max, local Min, when is the function increasing and decreasing! the function is: G(x)= x - 4 sqrt[x]
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    How Fast is the Distance Changing Between Two Ships and a Man's Shadow?

    AKG, I think your answer sounds correct.
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    Is Bohr's Model Accurate for the Hydrogen Atom?

    Thank you all .. That helped me a lot :)
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    Is Bohr's Model Accurate for the Hydrogen Atom?

    Does Bohr's Model appear to accurately reflect the energy aspects of the hydrogen atom ? I need an evidence to support the answer. :confused: Thanks :}
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