The covalent catalytic mechanism of an enzyme depends on nucleophilic attack by an active site cys whose pk is 8. a mutation in a nearby residue alters the microenvironment so that this pk increases to 10. would the mutation cause the reaction rate to increase or decrease?

An charge with mass m and charge q is emitted from the origin, (x,y)=(0,0). a large, flat screen is located at x=l. there is a target on the screen at y position y(h), where y(h) > 0. in this problem, you will examine two different ways that the charge might hit the target. ignore gravity in this problem. 1.assume that the charge is emitted with velocity v(0) in the positive x direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive y direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l. 2.now assume that the charge is emitted with velocity v(0) in the positive y direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l.

A10n falling encounters 10n of air resistance (upward force). the net force on the object is:

What is the magnitude of the resultant vector? round your answer to the nearest tenth. 5 m 13 m