Gasoline price jumps almost always occur because of price gouging by the "big oil" companies
What will be an ideal response?
While such price-gouging may play a role, the rise in price is almost always tied
to some event. Examples include wars in the Middle East, natural events such as a hurricane
that can disrupt production in the Gulf of Mexico and may interfere with tanker on- or
offloading, and political instability in a country that is an oil exporter.
One event that will certainly get attention will occur when it is recognized that peak
production of oil will have occurred. This will probably lead to a permanent rise in oil price,
and thence to a permanent rise in the cost of gasoline.
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Motion of the plates of Earth's crust is thought to be due to
a. the solar wind. b. convection from the hot interior. c. tides in the oceans. d. friction between wind and the land surface. e. Earth's magnetic field.
The ____________________ of a telescope is determined by the size of the primary lens or mirror
Fill in the blank(s) with correct word
As I slide a box at constant speed up a frictionless slope, pulling parallel to the slope, the tension in the rope will be:
a. greater than the tension would be if the box were stationary. b. greater than the weight of the box. c. equal to the weight of the box. d. less than the weight of the box.
A 4.00 kg hollow cylinder of radius 5.00 cm starts from rest and rolls without slipping down a 30.0 degree incline. If the length of the incline is 50.0 cm, then the velocity of the center of mass of the cylinder at the bottom of the incline is
A. 1.35 
B. 1.82
C. 1.57
D. 2.55
E. 3.02