During a tug of war each side of the contest pulls with 400 N
of force. If a spring scale could be put in the middle of the
rope, what would the reading be on the scale? Support
Wharves are made with pilings that permit the free passage
of water. Why would a solid-walled wharf be
disadvantageous to ships attempting to pull alongside?
A barge filled with scrap iron is in the Soo Locks in Northern
Michigan. If the iron is thrown overboard, does the water
level at the side of the lock rise, fall, or remain unchanged?
Explain your answer in terms of Archimedes Principle.
In terms of energy, momentum, and impulse explain the
following scenario. Kane is walking under a walkway bridge
when Whitney, the prankster, drops a potted plant from the
two meter distance on his head. Would Kane be better off if
While I worked as a check-out clerk in college, I noticed that
there were indentations on the tile-concrete floor in the
aisles where people would walk through during check-out.
After investigating this further I discovered it was right
Using the 2nd Law of Thermodynamics, explain how an air
conditioner is able to deliver cold air when it is hot outside.
Include a brief explanation of the refrigeration cycle.
The second law states that heat naturally flows from regions
Years ago Purdue University initiated an International Rube
Goldberg contest. The project requires students to design
and build a complex machine that completes a simple task.
Research why the contest was named after Rube Goldberg
In terms of rotational kinematics, which will roll down a ramp
faster: a can of stewed tomatoes or the same size and
massed can of refried beans. (Hint: think about the state of
each when they are in the can.)
A can of stewed tomatoes wi
Have someone hold a ruler (cm) so that the 0-cm mark is
between your finger and thumb (which need to be at least 2cm apart). Have them drop the ruler several times and
record the distance it takes to catch the ruler. Use the