In the calibration of an ammeter, using Faraday's law of electrolysis, the ammeter is kept constant at 1.2A (ampere). If 0.99g of copper is deposited in 40 minutes, find the correction to be applied to the ammeter. (Take Z = 0.00033gc^-1).

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.

Avehicle accelerates from 0 to 30 m/s in 10 seconds on a straight road