Much of the material making up Saturn’s rings is in the form of tiny dust grains having radii on the order of 10-6m. These grains are located in a region containing a dilute ionized gas, andthey pick up excess electrons. As an approximation, suppose each grain is spherical, with radius R = 1.0 × 10-6m. How many electrons would one grain have to pick up to have a potential of -400 V on its surface (taking V = 0 at infinity)?

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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part 1: which substance has a higher solubility?

a

smallest amount left undissolved atall temps in table shown most has dissolved high sol'by