Prove that if z = r(cos e + i sin e) and z "10, thenZ-I = r-I[cos(-e) + isin(-e)]

Introductory Chemistry 5
For each compound, list the correct formula and calculate the formula mass. (a) barium bromide (b) dinitrogen trioxide (c) copper(I) sulfate (d) hydrobromic acid

Classical Mechanics 0
The maximum displacement of a mass oscillating about its equilibrium position is 0.2 m, and its maximum speed is 1.2 m/s. What is the period r of its oscillations?

Campbell Biology 10
Food chains are sometimes short because a. only a single species of herbivore feeds on each plant species. b. local extinction of a species causes extinction of the other species in its food chain. c. most of the energy in a trophic level is lost as energy passes to the next higher level. d. most pro

Glencoe Accounting: First Year Course, Student Edition 1
Completing a Worksheet and Financial Statements The trial balance for Cycle Tech Bicycles, prepared on a ten-column work sheet, is included in your working papers. Instructions 1. Complete the work sheet for the year ended December 31. Use the following information to make the adjustments.

Social Psychology 8
In experiments on obedience, most participants who were ordered to administer severe shocks to an innocent person refused to do so.

Principles of Economics 9
A storm destroys several factories, thereby reducing the stock of capital. What effect does this event have on factor markets? a. Wages and the rental price of capital both rise. b. Wages and the rental price of capital both fall. c. Wages rise, and the rental price of capital falls. d. Wages fall, a

Chemistry for today : general, organic, and biochemistry 9
Explain why geometric isomerism is not possible in alkynes.

Chemistry for today : general, organic, and biochemistry 9
Given 3.00 moles of krypton gas, Kr(g), how many liters will this sample occupy at STP? a. 11.2 b. 22.4 c. 44.8 d. 67.2