Fill out the table of values based on the given closed circuit. Use prefixes as needed. Show all equations and corresponding matrices as well as their "reduced row echelon forms" (rref). 2.2 k2 6.8 k2 ww R4 1 kN R, R,470 2 6 volts R, R, R, R, Total R 1 ka 2.2 k2 470 Ω 6.8 k2

Use the orders of magnitude you found in the previous problem to answer the following questions to within an order of magnitude. (a) How many electrons would it take to equal the mass of a proton? (b) How many Earths would it take to equal the mass of the Sun? (c) How many Earth-Moon distances would it take to cover the distance from Earth to the Sun? (d) How many Moon atmospheres would it take to equal the mass of Earth’s atmosphere? (e) How many moons would it take to equal the mass of Earth? (f) How many protons would it take to equal the mass of the Sun? For the remaining questions, you need to use Figure 1.4 to obtain the necessary orders of magnitude of lengths, masses, and times.

If two different wires having identical cross-sectional areas carry the same current, will the drift velocity be higher or lower in the better conductor? Explain in terms of the equation vd=1nqA by considering how the density of charge carriers n srelates to whether or not a material is a good conductor.

If you were 10 design an electric healer using Nichrome wire as the healing element, what parameters of the wire could you vary to meet a specific power output such as 1 000 W?