Which expression can be used to calculate centripetal acceleration? StartFraction 2 pi r over T EndFraction
StartFraction 4 pi squared r over r squared EndFraction
StartFraction 4 pi squared r over T EndFraction
StartFraction left parenthesis 2 pi r right parenthesis squared over r squared EndFraction

Consider the following problem: a box with an open top is to be constructed from a square piece of cardboard, 3 ft wide, by cutting out a square from each of the four corners and bending up the sides. find the largest volume that such a box can have.

Which property of fossils allow scientists to determine the relative rock ages..

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?