D Question 12 1 pts Materials that can be used to make permanent magnets are conductors...
2) Materials that can be made into permanent magnets are a. paramagnetic. b. diamagnetic. c. ferromagnetic. d. none of the above
Permanent magnets are made from? A. paramagentic materials B. diamagnetic materials C. ferromagnetic materials D. dielectric matierals
Here's a cool example: Permanent magnets. If B are produced by currents, then what's up with permanent magnets? You don't have to plug them in, they just work. What's the current? One idea is that it could be the e' orbiting the nucleus. A charge moving in a circular loop is a sort of current. (You'll calculate this in Problem 30.6) Let's estimate the speed of the e' using Newton's Laws: the only force is the Coulombo attraction, and we'll...
1 pts Question 1 Select all of the following that are true about magnets and magnetic fields. the source of magnetic fields is net motion of charged particles the South pole of a bar magnet can be separated from the North pole to make two monopoles like magnetic poles IS and S, or N and N) repel and opposites attract IN and S) □ magnetic field lines always form closed loops magnetic fields are scalars a straight wire with current...
marks G P D Question 15 0.4 pts Which two countries that are permanent members of the Security Council have experienced significant economic decline, thus prompting some to question whether they should maintain their permanent seats? United States and Britain Britain and France United States and Russia Russia and Germany France and Italy O O O 0.4 pts D | Question 16 The League of Nations was created as part of O the Peace of Westphalia O the Versailles Treaty...
Question 3 1 pts Three conductors are involved in a measurement of capacitance. When conductor #1 and conductor #2 are connected together, the capacitance between them and #3 is 125 pF. When conductors #1 and #3 are connected, the capacitance between them and #2 is 125 pF. When conductors #2 and #3 are connected together, the capacitance between them and conductor #1 is 100 pF. Determine the mutual capacitances C12, C13, and C23. O C12= 75, C13= 75, and C23=...
Question 12 0.2 pts Suppose there is a permanent increase in a country's saving rate. This increase in the saving rate will cause: O a permanently higher level of capital per worker. a permanently higher level of output per capita. a permanently faster growth rate of output. both of the first two answers above O none of the above.
D Question 2 1 pts Labor Total productMarginal 0 0 12 In the above table, the total product that can be produced with four workers is 0 16 0 12 0 15 0 8 D Question 3 1 pts When adding another unit of labor leads to an increase in output that is smaller than increases in output that resulted from adding previous units of labor, we have the property of O diminishing output. O negative marginal product. O diminishing...
le disiate Bittorre D Question 7 1 pts A peremptory challenge can be used to remove a juror based on gender or race. True False Question 8 1 pts Jury selection is also known as jury nullification. True False Question 9 1 pts Res judicata prevents the relitigation of issues and claims already fully determined True False
D Question 1 5 pts Grignard reagents can be used to convert esters into tertiary alcohols after an acid workup. True False Question 2 7 pts The sigma complex intermediate formed during electrophilic aromatic substitution (EAS) reactions is resonance stabilized. Electron donating groups (EDGs) typically make the intermediate more stable and electron withdrawing groups (EWGS) typically make the intermediate less stable. Using this information, which statement is correct regarding EDGs versus EWGS? The stability of the sigma complex has nothing...