Click on the boxes below to indicate the number of electrons or protons in each labeled position for a zinc atom (z=30, a=65). Please carefully note the specific information requested for the nucleus by the letter designation. A: 65, 35, or 30
B:0,2,4,6,3,5,1,8, or 7
C: 2,0,6,7,5,4,8,3, or 1
D: 18,16,0,10,8,2,20,6, or 4
E: 2,8,0,6,16,10,18,4, or 20

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".