1. find the electric force between two electrons each with a charge of -1.6 x 10-19 C if they are located 3.25 μm apart. (1 μm = 1 x 10-6 m). Is this an attractive or repulsive force? Be sure to show all work and use proper scientific notation and significant figures in your answer.

2. Find the magnitude of an electric field located 7.00 cm from a source charge of - 11 nC. (1nC = 1 x 10-9 C). Will the field lines point toward or away from the source charge? Show your work and include an electric field diagram assuming the source is a point charge

3. What is the electric potential difference of a +3C charge that moves in a uniform electric field if the potential energy changes +100.00 J? Show your work.

You are a researcher for a golf club manufacturer. you are given two identical looking cubes of a metal alloy. you are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. it is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. which of the following is the best way to determine which is which? a. determine the density of each cube. the more dense one is the amorphous solid. b. melt both cubes and look for a broader range of melting temperatures. the one that melts over a broader range of temperatures is the amorphous solid. c. determine the density of each cube. the less dense cube is the amorphous solid. d. melt both cubes and measure the range of melting temperatures. the one that melts over a narrower range of temperatures is the amorphous solid.