Assume that it takes 7.00 minutes to fill a 30.0-gal gasoline tank.

a) calculate the rate at which the tank is filled in gallons per second.

b) calculate the rate at which the tank is filled in cubic meters per second.

c) determine the time interval, in hours, required to fill a 1 m³ volume at the same rate.

(1 us gal = 231 in³)

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the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it