Question

1,A charge of -2.48 μC is fixed in place. From a horizontal distance of 0.0493 m, a particle of mass 9.46 x 10-3 kg and charge -9.39 μC is fired with an initial speed of 72.3 m/s directly toward the fixed charge. How far does the particle travel before its speed is zero?

2, A spark plug in an automobile engine consists of two metal conductors that are separated by a distance of 1.1 mm. When an electric spark jumps between them, the magnitude of the electric field is 4.0 x 107 V/m. What is the magnitude of the potential difference ΔV between the conductors?

3,The electronic flash attachment for a camera contains a capacitor for storing the energy used to produce the flash. In one such unit, the potential difference between the plates of an 1100-μF capacitor is 390 V. (a) Determine the energy that is used to produce the flash in this unit. (b) Assuming that the flash lasts for 4.0 ms, find the effective power or "wattage" of the flash.

Answer 1

Kindtic o.04 9 3 E,こ E, 94.73+4.25 28, 98 2 0.2)

0.2 28.98 Distones tin.elladby poutield 0.0433-0.007 s = 0.004 21 m V= 390v リニ23.651| PoWER ENERLY TiME 七 L XIO 3