In the open ocean, the tides are waves that have a period of 12 hours and a speed of 750 km/hr. What is their wavelength?
What will be an ideal response?
9000 km
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A force of 15.0 N is applied to a wire with an un-stretched length of 4.00 m and a diameter of 5.00 mm. If the wire changed length by 1.20 mm, then the strain in the wire is
a. 
b. 
c. 
d. 
e. 
Suppose we put 20 non-interacting quantons into a one-dimensional box of length L. The quantons quickly settle into the lowest possible energy states available. Roughly how many times larger will the quantons’ total energy be if they are fermions as opposed to bosons?
A. About the same B. About 4 times C. About 10 times D. About 40 times E. About 400 times
If I weigh 741 N on Earth and 5320 N on the surface of a nearby planet, what is the acceleration due to gravity on that planet?
A) 70.4 m/s2 B) 51.4 m/s2 C) 61.2 m/s2 D) 81.0 m/s2
Which of the following represent reasonable order-of-magnitude estimates for your age in seconds?
1. 109 s 2. 1011 s 3. 107 s 4. 105 s