Physics, 30.01.2020 11:58 ForbesDrew
Afather is pulling his child on a sled in the snow. according to newton’s third law, the force the father exerts on the sled is equal to the force the sled exerts on the father but opposite in direction. how is it possible that the father can pull the child and sled forward?
Answers: 2
Physics, 22.06.2019 22:00, natalie2sheffield
Aparticle of mass m is placed in a one-dimensional box of length l. the box is so small that the particle’s motion is relativistic, so that e p2/2m is not valid. (a) derive an expression for the energy levels of the particle using the relativistic energy–momentum relation and the quantization of momentum that derives from connement. (b) if the particle is an electron in a box of length l 1.00 1012 m, nd its lowest possible kinetic energy. by what percent is the nonrelativistic formula for the energy in error?
Answers: 1
Physics, 23.06.2019 02:30, cassidyschmuzler
Find an expression for the electric field e⃗ at the center of the semicircle. hint: a small piece of arc length δs spans a small angle δθ=δs /r, where r is the radius. express your answer in terms of the variables q, l, unit vectors i^, j^, and appropriate constants.
Answers: 1
Physics, 23.06.2019 06:50, jeremiaht7
The results of huy's eye exam show that he is nearsighted. which explanation should huy expect to hear? "you need convex lenses to shorten the distance that light takes to focus in your eyes." "you need concave lenses to shorten the distance that light takes to focus in your eyes." "you need convex lenses to lengthen the distance that light takes to focus in your eyes." "you need concave lenses to lengthen the distance that light takes to focus in your eyes."
Answers: 1
Afather is pulling his child on a sled in the snow. according to newton’s third law, the force the f...
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