Alarge electroscope is made with "leaves" that are 70 cm long wires with 19 g spheres at the ends. when charged, nearly all the charge resides on the spheres. if the wires each make a 30° angle with the vertical, what total charge q must have been applied to the electroscope? ignore the mass of the wires.
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Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic
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In one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.
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Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2
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Alarge electroscope is made with "leaves" that are 70 cm long wires with 19 g spheres at the ends. w...
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