This diagram shows three balls of the same size, but different masses, which are completely submerged at the same depth in an open container of water. Ball 1 is made of lead. Ball 2 is made of Styrofoam (the material pool floats are made of). Ball 3 is made of a plastic that has exactly the same density as water. (The balls are being held under the water, or supported in the water as necessary to keep them in the positions shown.) The next three questions deal with these three balls.

When would the net force on the skier be directed forward, down the hill?

The James Webb telescope, the Hubble successor that is due to launch shortly, is designed so that it folds up for launch and unfolds to a much larger size after it is released in space. It is shown in both its folded and unfolded configurations below.    The James Webb will be rotating slightly when it is deployed in space. What will happen to its rotational speed as it unfolds to its larger size?

Where is the gravitational potential energy of the pendulum the largest?

The payroll master file is updated with

The key to preventing unauthorized changes to the payroll master file is

Which of the following internal controls will ensure that fraud does not exist in the sales/collection process: (i) document matching, (ii) separation of duties?

What is the payroll system’s principal output?

When goods are being ordered from a vendor, which electronic files are either read or updated?

To promote strong internal control, which of the following documents should be matched prior to billing a customer?