1. A potential difference of 12.0 V is applied across a wire of cross-sectional area 4.50 〖〗^2and length 1000. km. The current passing through the wire is 〖3.2×10〗^(−3)A.

Could someone . i have tried to solve myself but my calculation is off

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.

Both speed and velocity measure how fast something is moving. however, since speed is not a it does not require a(n question 6 options: a) quantity , unit b) magnitude, unit c) scalar, direction d) vector, direction