Gleb1964's latest activity
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GGleb1964 replied to the thread Undergrad Different result with kinetic energy and momentum when a bullet hits a target.May it is better to assume that summary momentum of <bullet+target> concerved before and after collision.
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GGleb1964 reacted to kuruman's post in the thread Undergrad Different result with kinetic energy and momentum when a bullet hits a target with
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To begin with, this problem is absurdly unrealistic. A 123 kg bullet? The mass of a common 55 mm artillery shell is about 43 kg... -
GGleb1964 replied to the thread Undergrad Pentaprism with magnification, which surface is curved?.Just consider that S3 curve should be R = 2*F*n, where n is refraction index of prism. Making S3 curve would produce astigmatism and...
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GGleb1964 reacted to russ_watters's post in the thread High School Why would an atmosphere without greenhouse gasses be colder than with them? with Like.
The surface radiates and not all of that energy is absorbed by the atmosphere...