Which of the curves on the graph below best represents the v…

Which of the curves on the graph below best represents the vertical component vy of the velocity versus the time t for a projectile fired at an angle of 45° above the horizontal? Use the standard convention that the y axis is vertical with positive being upward and x axis is horizontal and to the right. 

Four identical blocks each of mass m are arranged as shown o…

Four identical blocks each of mass m are arranged as shown on a frictionless surface. Block 1 is pushed with a force F. The coefficient of friction between the blocks is large enough that the blocks do not slide with respect to one another (so there is a friction between the blocks but no friction from the horizontal surface). We can neglect drag from the air.  Your friend draws the free body diagram on block 3.  You are asked to evaluate their work and you start by making sure they have the right number of forces. You tell your friend 

“Just as a child repeats the words of his mother, and the yo…

“Just as a child repeats the words of his mother, and the youngster the brutal manners of the elders at whose hands he suffers, so the giant loud-speaker of industrial culture, blaring through commercialized recreation and popular advertising—which become more and more indistinguishable from each other—endlessly reduplicates the surface of reality.” The speaker is ___.

“The total effect of the culture industry is one of anti-enl…

“The total effect of the culture industry is one of anti-enlightenment, in which… enlightenment, that is the progressive technical domination of nature, becomes mass deception and is turned into a means for fettering consciousness. It impedes the development of autonomous, independent individuals who judge and decide consciously for themselves.” The speaker is ___.