A 45 kg student rides an elevator for 20 seconds. On the graph, the student's velocity is tracked over time. A. Write a narrative describing the student's motion for the entire trip.
B. Make a force body diagram for the following times, t = 2s, 7s, 13s, 19s.
C. The student rides the elevator while standing on a spring scale. What will the spring scale display at the following times t =2s and 7s. hi

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.

Utah's great salt lake has an average salinity seven times higher than that of the oceans. very few multicellular organisms live in this harsh environment. an example is the brine shrimp, which must devote a large portion of its metabolic energy to osmoregulation. these brine shrimp must available hint(s)utah's great salt lake has an average salinity seven times higher than that of the oceans. very few multicellular organisms live in this harsh environment. an example is the brine shrimp, which must devote a large portion of its metabolic energy to osmoregulation. these brine shrimp must pump water back into their cells to counter its loss due to osmosisactively pump water back out of their cells to counter its inflow due to osmosissynthesize membranes that are impermeable to substances that upset osmotic balanceactively pump salt back out of their cells to counter its inflow due to osmosis

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages