Which of the following is an example of an unbalanced force?
1. A computer on a table
2 A man leaning against a wall
3 An athlete serving a volleyball
4 Fruit in a bowl

Which of the following changes to a pipe would increase the conductance by a factor of 12? 1.quadrupling the length and tripling the radius.2.reducing the length by a factor of and doubling the radius.3.tripling the length and reducing the radius by a factor of .4.reducing the length but a factor of and doubling the radius.

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?