In a ramp experiment, a trolley of mass 0.5 kg is pushed at a velocity of 0.3m/s. It collides with a second stationary trolley of mass 1.0kg and sticks to it. After collision, both trolleys move off with a velocity of 0.1m/s. Has momentum been conserved?

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.

What organization and environment is described above?

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above