Sally and maria were running around the track during pe. they were not happy and decided to stop and rest once they got to the bleachers. after a 10 minute rest, they started running again, but sally tripped and fell. at what time during their run did sally fall for a minute? a) at 4 minutes b) at 14 minutes c) at 15 minutes d) at 20 minutes

Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)