Two cars (one red, one blue) are both making a turn. Each vehicle has the same mass and turn radius but the red car is moving at twice the speed of the blue car. How do the centripetal forces acting on each vehicle compare?
Centripetal force is four times larger for the red car.
Centripetal force is two times larger for the red car.
Centripetal force is two times weaker for the blue car.
Centripetal forces are equal.

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2