Jimmy "Butterfingers" James is a stuntman that jumps off of buildings for a living. He was jumping off a building for an upcoming movie when he dropped the closed umbrella he was holding. If he was travelling at 15.6 m/s when he let go of the umbrella, (1) from what height (distance) did the umbrella fall if it took 1.25 seconds to hit the ground and (2) what was the velocity of the umbrella just before it hit the ground? Note: Show your work and proper units, and write your answers to 3 sig figs. Also, keep all numbers positive

The lights used by mark watley (played by matt damon) during the film the martian seem to be metal halide lamps. metal halide lamps are filled with vaporized mercury and metal-halogen compounds. when an electric current is passed through the lamp, the tube begins to glow a bright white/blue color. if you were to pass this light through a prism to separate the individual light frequencies, you would see a rainbow just as you would if using natural sunlight because of the complexity of the metal halide gas and the vast amount of possible electron transitions. (the study of light in this way is known as spectroscopy and allows astronomers to know exactly what atoms compose distant stars, simply by looking at the light they emit. the spectral lines an atom produces uniquely identifies that atom just like a fingerprint uniquely identifies a person. the momentum equation and energy equation that we have used above can be combined to give the following equation: c = e p where again p is the phonon momentum, e is the photon energy and c is the speed of light. when you divide the photon energy found in #6 by the photon momentum found in #4, do you get the speed of light? (if not, check your work for questions #4 through #6). yes no

Which transition by an electron will release the greatest amount of energy? oa ob oc od

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.