Copper Definition and 513 Threads

Can anybody please tell me where I can find the value for the relative permittivity of copper with respect to air. Thanks

What is the formula for copper (II) chlorate? a. CuClOsubscript 3 b. Cu(ClOsubscript 3) subscript 2 c. CuCl d. CuClsubscript 2 Please help if you don't mind.

Here's a question from my textbook: Two copper spheres, each having a mass of .4 kg, are separated by 2 m. (a) How many electrons does each sphere contain? The atomic mass of copper is 63.5 g/mol, and its atomic number is 29. (b) How many electrons would have to be removed from one sphere...

Hi, I have a problem with copper electrodes. I spin-coat TPD on them and due to differences in work function of the copper(4.7eV) and TPD(5.4eV) I do not get almost any current from such a system. You can take a look at TPD here...

Hello, I don't know if you will find this question silly or not because I know it shouldn't be that hard but for some reason I keep getting it wrong. Here it is: A square copper loop, with sides of length 10.4 cm, is located in a region of changing magnetic field. The direction of the...

Hi. This may seem extremely easy for all you guys here but seeing as I am 15 its not quite as simple to me. Firstly the assesment I am going to be doing will count for my GCSE therefore i want the best possible result (Btw I am taking triple science) Can someone with as much detail as...

This one is giving me trouble because I don't know the final radius and I don't know how to find it. 1. A copper sphere of radius 2.000 cm is placed over a hole of radius 1.990 cm in an aluminum plate at 20 deg. C. At what common temperature will the sphere pass through the hole? Ans. 747...

Hi all, I've this question and I don't know how to go about... can somebody pls assist? thanks question: a cylinder of glass 1cm long has a resistivity of 10E12 ohm meter. how long would a copper wire of the same cross sectional areqa need to be to have the same resistance as the glass...

hi everybody: my problem says the following: A copper calorimeter can with mass 0.100 kg contains 0.160 kg of water and 0.018 kg of ice in thermal equilibrium at atmospheric pressure. If 0.750 kg of lead at a temperature of 255 degree celcius is dropped into the calorimeter can, what is the...

Hey everyone, I'm a little stumped on this one, maybe someone can help. I don't need someone to do it for me, just maybe start me in the right direction. The American physicist E. H. Hall discovered (1979) that when a current travels along a conducting plate of width l, which is...

I've seen solid copper braclets. I've seen chain copper bracelets. I've seen magnetic braclets. All of them claim to do one thing or another, but is any of it true? It sounds a lot like BS but then again, humans do have strange fields around them. When I'm near a radio, I cause lots of...

I need to calculate the force required to pull a copper ball radius 2.00cm upward through a fluid at the constant speed 9.00cm/s. The drag forse is to be proportional to the speed, with proportionality constant .950kg/s. Ignore any boyant force. What I did so far was figure out the resistive...

This one has me stumped. Please help me solve. Thank you! Time A copper pot is heated by a burner which is at 195 ° C. If the water in the pot is boiling, how long does it take in seconds to boil away 0.4 L? The diameter of the pot is 27 cm, and it is 3.5 mm thick. k copper = 9.4...