For the Gravitron ride above, assume it has a radius of 18 m and a centripetal acceleration of 32 m/s?. Assume a person
is in the graviton with 180 cm height and 80 kg of mass. What
is the speed it is spinning at?
a 24 m/s
b 17 m/s
7
C 32 m/s
d 9.8 m/s

Iron reacts with sulfur to form iron sulfide. if 60 grams of iron reacts with sulfur to produce 90 grams of iron sulfide, how much sulfur has been used in the chemical reaction?

In science and physics what is the standard unit of measure for speed?

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.