The pedals on a bicycle give a mechanical advantage by allowing you to turn the pedals a distance to turn the circumference of the wheels. a) long, larger b) long, shorter c) short, larger d) short, shorter

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.

A40.0 l tank of ammonia has a pressure of 12.7 kpa. calculate the. volume of the ammonia if it’s pressure is changed to 8.4 kpa while its temperature remains constant.

What is friction? how does it affect the motion of an object?