Please help me A man pulls a crate on a horizontal floor with the help of a rope (figure 7.7). The pulling force of the rope is 200N at the 30 "angle with the horizontal.
Calculate the work done to move the crate by 5.0m.​

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

Which articulations allow for greatest range of motion?