Errors - add numbers
Add this pair of numbers.
9+-3, 5+-1.
The uncertainity is:

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.

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).

Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency