Physics, 11.03.2020 17:42 amourrrblackkkk
A force with magnitude 30 N acts directly upward from the xy-plane on an object with mass 6 kg. The object starts at the origin with initial velocity v(0) = i − j. Find its position function and its speed at time t.
Answers: 1
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The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?
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How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.
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What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration
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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
Answers: 2
A force with magnitude 30 N acts directly upward from the xy-plane on an object with mass 6 kg. The...
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