42. Very large capacitors have been considered as a means for storing electrical energy. If we...
NOTES: questions are not related to each other a- An electron is sent at high speed toward a gold nucleus (charge +79e). What is the electrical force acting on the electron when it is 1.7 x 10-14 m away from the gold nucleus? (e 1.6 x 10-19 C, ke 8.99 x 109 N-m2/C2) b-A capacitor is made by taking two sheets of aluminum foil, each 0.022 mm thick and placing between them a sheet of paper which comes from a...
You’ve been hired by Elon Musk for a secret project within Tesla.Rather than annoying battery technology with its slow charging and limited lifetime, he wants to try to power cars by storing the energy in capacitors. (a) If a small car with an efficient electric motor consumes about 10 kW of power on average, and we’d like to be able to drive for several hours before recharging ,about how much energy, in J, do we need to be able to...