Two identical parallel plate capacitors are given the same charge Q, after which they are disconnected from the battery. After C2 has been charged and disconnected, it is filled with a dielectric. How are the potential energies of each capacitor related? U1 = U2 U1 < U2 U1 > U2
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Physics, 22.06.2019 11:00
1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?
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Physics, 22.06.2019 15:20
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/(mâ
k), and the styrofoam has k= 0.010 w/(mâ
k). the interior surface temperature is 19.0 âc , and the exterior surface temperature is -15.0 âc . 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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Physics, 22.06.2019 16:00
Apersons beliefs and general outlook, which act like filters on the information they receive are called ?
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