Draw the velocity time graph a train moving on a straight path along a particular direction with a constant velocity? can somebody draw and showplzz

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

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.

State the following: boyle's law and charle's law