Physics, 18.01.2020 03:31 sonyalehardez
Common transparent tape can becomes charged when pulled from a dispenser. if two identical pieces of tape are pulled from two freshly loaded tape dispensers so that they have the same charge and one piece is placed above another, the repulsive force can be great enough to support the top piece’s weight. calculate the magnitude of the charge on each piece of tape if electrostatic force is great enough to support the weight of a 11.3 mg piece of tape a distance 1.00 cm above the other. for this problem, treat the each piece of tape as a point charge (this is only an approximation) [be sure to watch the video at the beginning of this chapter.]
Answers: 2
Physics, 22.06.2019 11:50
The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].
Answers: 3
Physics, 22.06.2019 15:00
Sodium chloride, nacl, is formed when a sodium atom transfers its electron to a chlorine atom. the difference in charge between the two atoms creates a(n) attraction that bonds them together.
Answers: 1
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
Answers: 2
Physics, 22.06.2019 15:30
The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?
Answers: 2
Common transparent tape can becomes charged when pulled from a dispenser. if two identical pieces of...
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