Ahorizontal turntable is made from a uniform solid disk and is initially rotating with angular velocity of 6.9 rad/s about a fixed vertical axis through its center. the turntable has a radius of 0.11 m and a moment of inertia of 0.006655 kg m2 about the rotation axis. a piece of clay, initially at rest, is dropped onto the turntable and sticks to it at a distance d= 0.04 m from its center as shown in the figure. the final angular velocity of the turntable and the clay after the collision is 4 rad/s. treat the piece of clay as a point particle and assume that there are no external torques acting on the system around the rotation axis. which of these quantities are conserved during the collision? a. the total linear momentum of the clay and the turntable. b. the total angular momentum of the clay and the turntable about the rotation axis. c. the angular momentum of the turntable about the rotation axis. d. the angular momentum of the clay about the rotation axis. e. the mechanical energy of the clay and the turntable

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

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

The particles that are found in the nucleus of an atom are