Rashad is in the hospital and is about to undergo a brain-imaging process that involves placing him inside a magnetic field so that a computer can create three-dimensional images of his brain. what procedure is he about to undergo? electroencephalography (eeg) magnetic resonance imaging (mri) computed tomography (ct) positron emission tomography (pet)

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".

What is the main difference between the atmospheres of jupiter and neptune? a. neptune does not have hydrogen and helium. b. jupiter does not have hydrogen and helium. c. jupiter has methane clouds. d. neptune has methane clouds.

What are close-toed shoes least likely to provide protection against? hydrogen gas produced during a reaction spilled water from a hot-water bath broken glass from a dropped test tube acid leaking from a cracked beaker