Physics, 01.11.2019 02:31, amberwithnell12512
Acopper wire of 1-m length and 1-mm radius has a resistance of 5.5 × 10 − 3 [ω] and carries a current of 4 [a]. the number of free electrons per unit volume in copper is 8.43 × 10 28 [m − 3 ]. find (a) the current density, (b) the conductivity of the copper, (c) the power dissipated in the wire, (d) the (average) drift velocity of free electrons, and (e) the mobility of free electrons.
Answers: 3
Physics, 21.06.2019 13:50, Corgilover1234
Ahot-air balloon is drifting straight downward with a constant speed of 2.40 m/s. when the balloon is 7.63 m above the ground, the balloonist decides to drop one of the ballast sandbags to the ground below. how much time elapses before the sandbag hits the ground?
Answers: 1
Physics, 22.06.2019 04:40, love5965
Which statement best describes copper? a. it has a low resistance and prevents charges from moving freely. b it has a high resistance and allows charges to move freely. c. it has a high resistance and prevents charges from moving freely. d. it has a low resistance and allows charges to move freely
Answers: 1
Physics, 22.06.2019 10:00, kanonhuffmanp3rnmy
The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.
Answers: 2
Physics, 22.06.2019 14:10, astarkey14
Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.
Answers: 2
Acopper wire of 1-m length and 1-mm radius has a resistance of 5.5 × 10 − 3 [ω] and carries a curren...
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