Physics, 02.02.2021 19:00 wsdafvbhjkl
3. What are some
physical properties that could be used
in developing a temperature scale?
Answers: 3
Physics, 23.06.2019 08:00
Aball is rolled uphill a distance of 5 m before it slows, stops, and begins to roll back. the ball rolls downhill 9 m before coming to rest against a tree. what is the magnitude of the balls displacement? a. 4 meters b. 9 meters c. 14 meters d. 45 meters
Answers: 2
Physics, 23.06.2019 08:30
The center of a long frictionless rod is pivoted at the origin, and the rod is forced to rotate in a vertical plane with constant angular velocity \omega. write down the lagrangian for a bead of mass m threaded on the rod, using r as your generalized coordinate, where r, \phi are the polar coordinates of the bead. (notice that \phi is not an independent variable since it is fixed by the rotation of the rod tobe \phi = \omega * t) solve lagrange's equation for r(t). what happens if the bead is initially at rest at the origin? if it is released from any point ro > 0, show that r(t) eventually grows exponentially. explain your results in terms of the centrifugal force m* \omega ^2 *r.
Answers: 3
Physics, 23.06.2019 09:00
If a person whirls an object horizontally in a counter clockwise direction and the string breaks at point p as shown, what path will the rock follow?
Answers: 2
Physics, 23.06.2019 09:30
According to the second law of thermodynamics, what is true of entropy in all natural systems? a.it will always decrease. b.it will always increase. c.it will always remain the same. d.it is impossible to measure. e.it will always equal zero.
Answers: 1
3. What are some
physical properties that could be used
in developing a temperature scal...
physical properties that could be used
in developing a temperature scal...
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