The meter stick in the drawing can rotate about an axis located at the 20.0-cm mark. the axis is perpendicular to the screen. a force f acts at the left end; the force is perpendicular to the meter stick and has a magnitude of 175 n. a second force, either f1 or f2, acts at the 80.0-cm mark, as the drawing shows. the meter stick is in equilibrium. which force, f1 or f2, acts on the meter stick, and what is its magnitude?

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?