In order to move a box filled with equipment to the second story loft in the warehouse, several students built a ramp or inclined plane. there was some disagreement on the height and material for the ramp. the loft height was 2.5 meters. sara suggested a very long ramp, approximately 25 meters long. the other students disagreed, insisting it would take too much effort to push the box that distance and the ramp should be much shorter and steeper. instead they built a ramp 10 meters in length. what comments would you make to the students based solely on the mechanical advantage of an inclined plane?
Answers: 2
Physics, 21.06.2019 20:30, 173899
Water at room temperature of 20.0°c is poured into an aluminum cylinder which has graduation markings etched on the inside. the reading in the graduations is 300.0 cc. the cylinder with the water in it is then immersed in a constant temperature bath at a temperature of 100°c. what is the reading for the level of water on the graduations of the cylinder after the water and the cylinder reach thermal equilibrium with the bath? the volume coefficient of expansion of water is 2.07 x 10^-4 k-1, and the linear coefficient of expansion of aluminum is 23.0 x 10^-6 k-1. a) 305.0 cc b) 304.0 cc c) 303.5 cc d) 303.3 cc e) 304.5 cc
Answers: 3
Physics, 22.06.2019 11:00, dragon2565
Looking at this barometer, is the air pressure high or low? what type of weather would you expect? high, bad low, bad high, good low, good
Answers: 1
In order to move a box filled with equipment to the second story loft in the warehouse, several stud...
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