Physics, 23.10.2019 18:20 dragonmaster837
When a 4.32 kg object is hung vertically on a certain light spring that obeys hooke's law, the spring stretches 2.92 cm.
(a) if the 4.32 kg object is removed, how far will the spring stretch if a 1.50 kg block is hung on it?
(b) how much work must an external agent do to stretch the same spring 4.00 cm from its unstretched position?
Answers: 2
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/(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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When a 4.32 kg object is hung vertically on a certain light spring that obeys hooke's law, the sprin...
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