Abeam of electrons (with unspecified energy) is partially transmitted through a thin ti foil a) from a reliable source, find the mass density (at room temp.) and molar mass of this element. calculate the density of atoms n (in atoms/cm3, or just cm) d. b) for a foil of thickness t-72 nm , the transmitted electron beam has 43% of the incident-beam intensity. determine the mean free path length л (in nm) for scattering in in (at this energy). c) determine the total atomic scattering cross section o, for an atom at this energy. use appropriate units

Calculate the capacitance of a system that stores 2.0 x 10^-10c of charge at 100.0 v. use c=q/v. a. 2.0 x 10^-12 f b. 2.0 x 10^-8 f c. 5.0 x 10^11 f d. 5.0 x 10^7 f

What is the magnitude of the acceleration vector which causes a particle to move from velocity −5i−2j m/s to −6i+ 7j m/s in 8 seconds. answer in m/s.

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.