Physics, 13.01.2020 23:31 nikejenkins18
Section i - terms of reference
a. frame of reference f. acceleration b. distance g. displacement c. instantaneous speed h. speed d. vector i. average speed e. relative motion j. velocity
a system of objects that are not moving with respect to one another
movement in relation to a frame of reference.
the slope of a line on a distance-time graph is
a quantity that has magnitude and direction; it can have size, length or amount.
length directly from the starting point to the ending point.
a description of both speed and direction of motion; it is a vector.
the general speed computed for the entire duration of a trip or distance. distance and direction from the starting point to the ending point. rate of motion at any given moment. changes in speed, changes in direction or changes in both; it is a vector.
Answers: 3
Physics, 22.06.2019 07:30
Some material consisting of a collection of microscopic objects is kept at a high temperature. a photon detector capable of detecting photon energies from infrared through ultraviolet observes photons emitted with energies of 0.3 ev, 0.5 ev, 0.8 ev, 2.0ev, 2.5ev, and 2.8ev. these are the only photon energies observed. (a) draw and label a possible energy-level diagram for one of the microscopic objects, which has four bound states. on the diagram, indicate the transitions corresponding to the emitted photons. explain briefly. (b) would a spring–mass model be a good model for these microscopic objects? why or why not? (c) the material is now cooled down to a very low temperature, and the photon detector stops detecting photon emissions. next, a beam of light with a continuous range of energies from infrared through ultraviolet shines on the material, and the photon detector observes the beam of light after it passes through the material. what photon energies in this beam of light are observed to be significantly reduced in intensity (“dark absorption lines”)? explain briefly.
Answers: 3
Physics, 22.06.2019 14:00
The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?
Answers: 2
Physics, 22.06.2019 18:10
A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.
Answers: 2
Physics, 22.06.2019 19:30
Another word for electromagnetic energy is a. heat b. force c. matter d. radiation
Answers: 1
Section i - terms of reference
a. frame of reference f. acceleration b. distance g. dis...
a. frame of reference f. acceleration b. distance g. dis...
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