A catapult on a level field tosses a 3.0 kg stone a horizontal distance of 100 m.
A second 3.0 kg stone tossed in an
identical fashion breaks apart in the air into
two pieces, one with a mass of 1.0 kg and
one with a mass of 2.0 kg. Both of the
pieces hit the ground at the same time. If
the 1.0 kg piece lands a distance of 180 m
away from the catapult, how far away
from the catapult does the 2.0 kg piece
land? Ignore air resistance.

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.

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

A( developed during the process of technology design