Chemical reactions occur around us every day. Combustion releases the carbon stored in fossil fuels (e. g. coal, oil, natural gases) into the atmosphere as carbon dioxide gas.
Which of the following equations represent this process?
O NaHCO 3 + HC2H302 - NaC 2H 302+H2O + CO2
o CaCO 3 + HNO 3 - Ca(NO3)2 + H2O + CO2
O C&H 10 + 02 – CO 2 + H20
O CO 2 + H20- C6H 1206+ O2

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?