Chris runs around a circular track with a radius of 39 meters. he makes five trips around the track in 220 seconds. a. what is the circumference of the track? b. how many meters does he run? c. what is his angular speed? d. what is his linear speed?

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.

You will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. (refer to the walk-through video to locate the online lab within the online textbook).

What part of the ear is names after tools, such as the hammer and the anvil?