The moon and the sun both affect the tides on earth. this evidence best supports the hypothesis that a) the sun's and moon’s gravitational attraction to water is unique. b) every object exerts gravitational force on every other object. c) gravity is both an attractive force and a repelling force. d) spinning objects are attracted to liquids.

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

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?

Which scientist was the first to propose the heliocentric model of the universe? a. aristotle b. isaac newton c. galileo galilei d. nicolaus copernicus