A 4.0-mm-diameter copper ball is charged to 50 nC.
Part A
What traction of its electrons have been removed? The density of copper is 800 kg/m3
A 7.0-mm-diameter copper ball is charged to 50 nC . What fraction of its electrons have been removed? The density of copper is 8900 kg/m3.
A 5.0-mm-diameter copper ball is charged to 60 nC . What fraction of its electrons have been removed? The density of copper is 8900 kg/m3.
A 6.0-mm-diameter copper ball is charged to 80 nC . What fraction of its electrons have been removed? The density of copper is 8900 kg/m3
ReviewI Constants Part A A 3.0-mm-diameter copper ball is charged to 80 nC What fraction of its electrons have been removed? The density of copper is 8900 kg/m3 Express your answer using two significant figures. Submit
PartA l Review | Constants What fraction of its electrons have been removed? The density of copper is 8900 kg/m Express your answer using two significant figures. A 2.0-mm-diameter copper ball is charged to 90 nC Xa Xp a返返 X IXİ X.ION Submit nswer
A thin, horizontal, 20-cm-diameter copper plate is charged to -4.4 nC . Assume that the electrons are uniformly distributed on the surface What is the strength of the electric field 0.1 mm above the center of the top surface of the plate? What is the strength of the electric field at the plate's center of mass? What is the strength of the electric field 0.1 mm below the center of the bottom surface of the plate?
The cylindrical rod with a diameter d=1 mm is made from copper (29 65Cu). The density of the copper is 8900 kg/m3. Find the average drifting velocity of electrons in the rood, if the current in 1 A flows through the rod
A glass rod is charged to +3.0 nC by rubbing.Part A Have electrons been removed from the rod or protons added? Part B How many electrons have been removed or protons added?
A 1.0-m-long, 1.0-mm-diameter copper wire (mass density 8920 kg/m3 ) carries a current of 50 A to the east. Suppose you want to levitate the wire by applying an externally created magnetic field. What field strength and direction do you need?
A 14-gauge copper wire has a diameter of 1.684 mm. What magnitude current flows in amperes when the drift velocity is 1.20 mm/s? (The density of free electrons in copper is 8.34 ✕ 1028 e−/m3.).) ____________ A