Wally is a planetologist in the future. He discovers a planet similar to Earth that has two major oceans. Ocean A is very large and looks like it has baseball stitches down its center. Ocean B is very small and has volcanoes all along one side. Wally needs to predict what the planet will look like far into the future. Which prediction would most likely come true? -Ocean A will shrink, and Ocean B will get bigger.
-Ocean A will disappear, and Ocean B will remain the same.
-Ocean A will get bigger, and Ocean B will shrink.
-Both Ocean A and Ocean B will remain the same.

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me

the speed of the cart after 3 seconds of low fan speed is ⇒ 54.0 cm/s.

the speed of the cart after 5 seconds of medium fan speed is ⇒ 120.0 cm/s.

the speed of the cart after 2 seconds of high fan speed is ⇒ 64.0 cm/s. 

just did the lab.

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.