Which eating disorder is characterized by eating large amounts of food at one sitting and then purging ?

a: orthorexia
b: anorexia nervosa
c: bulimia nervosa
d: binge- eating disorder

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

A( developed during the process of technology design

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".