How long does it take electrons to get from the car battery to the starting motor? assume the current is 143 a and the electrons travel through copper wire with cross sectional area 40.2 mm2 and length 84.5 cm . the mass density of copper is 8960 kg/m3 and the molar mass is 63.5 g/mol . avogadro’s number is 6.022 × 1023 . assume that each copper atom contributes one conduction electron.

Answer

the concentration of electron/ volume (n) = 8.5 × 10²⁸ /m³

the drift velocity of electron

v = 2.615 × 10⁻⁴ m/s

time require is

t = 3231.35 s

it is called kinetic energy

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!