Match the terms in Column II with the descriptions in Column I. Write the letters of the correct term in the blank on the left. Column I Column II 1. distance between two points a. time 2. SI unit of length b. volume 3. tool used to measure length c. mass 4. units obtained by combining other units d. density 5. amount of space occupied by an object e. meter 6. unit used to express volume f. kilogram 7. SI unit of mass g. derived 8. amount of matter in an object h. liter 9. mass per unit of volume i. second 10. temperature scale of most laboratory thermometers j. Kelvin 11. instrument used to measure mass k. length 12. interval between two events 1. balance 13. SI unit of temperature m. meterstick 14. SI unit of time n. thermometer 15. instrument used to measure temperature o. Celsius

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

To understand the behavior of the electric field at the surface of a conductor, and its relationship to surface charge on the conductor. a conductor is placed in an external electrostatic field. the external field is uniform before the conductor is placed within it. the conductor is completely isolated from any source of current or charge. part a: which of the following describes the electric field inside this conductor? it is in the same direction as the original external field.it is in the opposite direction from that of the original external field.it has a direction determined entirely by the charge on its surface.it is always zero. part b: the charge density inside the conductor is: 0non-zero; but uniformnon-zero; non-uniforminfinite part c: assume that at some point just outside the surface of the conductor, the electric field has magnitude e and is directed toward the surface of the conductor. what is the charge density η on the surface of the conductor at that point? express your answer in terms of e and ϵ0

An alpha particle with kinetic energy 12.5 mev makes a collision with lead nucleus, but it is not "aimed" at the center of the lead nucleus, and has an initial nonzero angular momentum (with respect to the stationary lead nucleus) of magnitude l = p0 b, where p0 is the magnitude of the initial momentum of the alpha particle and b=1.40×10−12 m. (assume that the lead nucleus remains stationary and that it may be treated as a point charge. the atomic number of lead is 82. the alpha particle is a helium nucleus, with atomic number 2.) what is the distance of closest approach?