Physics, 19.02.2021 20:20 hotrdks946
A 4kg box rests on the floor. A man comes over and pushes it with a 30N force. If the box slides across the floor for 2s, how far will it go?
Answers: 2
Physics, 22.06.2019 22:00
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, 22.06.2019 23:30
An astronaut on the moon throws a baseball upward. the astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 3030 ft per sec. the height s of the ball in feet is given by the equation s equals negative 2.7 t squared plus 30 t plus 6.5s=−2.7t2+30t+6.5, where t is the number of seconds after the ball was thrown. complete parts a and b.
Answers: 2
Physics, 23.06.2019 00:00
Why should the wavelength scale of spectroscope be calibrated
Answers: 2
A 4kg box rests on the floor. A man comes over and pushes it with a 30N force. If the
box slides ac...
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