Recent content by boredooom

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    Unraveling the Dynamics of a Bouncing Ball

    Homework Statement hey, i have a small physics project to do, where in i find to the dynamics of a bouncing ball. and the whatever dynamics is not mentioned.. Homework Equations ? The Attempt at a Solution so sofar i have calculated the co-efficient of restitution, then the...
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    Understanding Wave Interference: Explaining the Effects of Wave Interaction

    Hi. Could anyone tell me what would happen if these two waves meet? I would also appreciate it if anyone could explain to me how they arrived at their conclusion. http://img145.imageshack.us/img145/6854/wavest1.png
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    How do you calculate half-life for radioactive isotopes?

    i don't think i understand.. can you explain more please?
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    How do you calculate half-life for radioactive isotopes?

    I got an exam tomorrow, and since I missed the last week, I don't really know how to solve questions like these: Homework Equations 1 gramm of Ra-226 radiates 3,7*10^10 alpha-particles in a second. Find out the half-life period of Ra-226. We produce a radioactive Cu-64 and seal it...
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    Medical Understanding Motor and Sensory Aphasia: Causes, Symptoms, and Prognosis

    thanks for the (semi i suppose) help... I have only learned one clinical thing about it in 4 weeks... but anyway if damage only one half of the spinal cord... You lose nociception (spinothalamic pathway) from the opposite side of the body and proprioception (dorsal column pathway) from the same...
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    Anyone know the future uses of x rays within a hospital?

    Anyone know the future uses of x rays within a hospital? or what the future adaptations are to make it less harmful etc? help! xx
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    Calculating Enthalpy of Neutralization in Calorimetry Experiment

    Could I get a solution to this question? In a laboratory experiment in calorimetry, 100 mL of 0.500 M of acetic acid is mixed with 100 mL of 0.500 M sodium hydroxide in a calorimeter. The temperature rises from 25.00 C to 27.55 C. The heat capacity of the calorimeter is 150.48 J/C, and the...
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    Why Do Ripples Form on Water's Surface?

    Can someone give me a basic-ish explanation of why ripples are formed in the water when for example you throw a pebble in a lake or something? Thanks
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    Medical Understanding Motor and Sensory Aphasia: Causes, Symptoms, and Prognosis

    I'm absolutely clueless so please help if you can... - What is the difference between a motor and sensory aphasia? - What happens to the pupil reflex in a patient with contical blindness? - If a patient has a meningioma in the dura of the falx cerebri at the level of the precentral...
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