Attempting to learn more about the physiological aspects of depression, dr. paul observes levels and areas of brain activation in equal numbers of male and female subjects as they are viewing images of people exhibiting angry, sad, and fearful facial expressions. what is dr. paul most likely to observe? a. chances are better that 2 to 1 that the subject is male if brain activation levels are significantly suppressed. b. brain activation is markedly less in subjects diagnosed with depression. c. brain activation is significantly greater in subjects diagnosed with depression. d. chances are better that 2 to 1 that the subject is female if brain activation is significantly less than normal.

B. Brain activation is markedly less in subjects diagnosed with depression.

Explanation:

It is likely that the researcher shown in the question above realizes, based on his experiment, that brain activation is significantly less in individuals diagnosed with depression. This is because depression has the ability to "age" the brain and, consequently, decrease the synaptic density, not allowing the nervous cells to pass impulses and transmit information to each other.

For this reason, in the research shown above, people diagnosed with depression will show less brain activity, that is, less sensitivity and reaction to the images viewed by them.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.