Three mountain climbers set out to climb a mountain from the same altitude and all arrive at the same location at the top. mountain climber a took a long gradual slope to the top, b went a steeper but shorter path, and c tackled the sheer straight side to the top. assume all three climbers have the same mass. which climber gained the greatest potential energy? a. ab. bc. cd. all did the same amount of work

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.

If a star is moving toward earth, it is

Abeverage can is made of 3004-h19 aluminum alloy (elastic modulus 69 gpa, tensile yield strength 285 mpa, density 2.72 g/cm^3). the dimensions on the can are approximated as a thin-walled cylinder with a height of 4.83 inches, diameter of 2.60 inches. empty the can has a mass of 14.2 g. determine: a. the wall thickness of the cylinder b. assuming a pinned-pinned condition what is the critical load? c. assuming a fixed-fixed condition what is the critical load?