You are measuring the volume of a chemical beaker how would u take the measurment? a. lift the beaker to eye level
b. you look down at the liquid above
c. use a ruler to measure
d. you squat to be eye level to the beaker

I think its d  because lifting it would make the chemical swish around and that will make it so you cant get the right measurement. hope this helps :)

the moving of the box is a result of centripetal force. think of that  as a car or a truck in this case creates a turn, the force of friction performing upon the turned wheels of the car runs centripetal force obligatory for circular motion for the things inside it.