Which of the following is true for catalysis of a reaction by an enzyme? group of answer choices
a. the equilibrium constant decreases b. the initial velocity decreases
c. the standard free energy of the reaction increases
d. the initial velocity increases in the presence of an enzyme
e. the activation energy increases

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?