1) A 300N box slides with an acceleration of 1m/s2. If the person pulling applies a 60N force, calculate Ff and u.

Explain how plate tectonics have changed earth’s surface over time. include the role of plate tectonics in the creation of landforms.

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

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)