In Ptolemy's view of the universe, a planet moves on an epicycle whose center moves around the Earth on the deferent circle
a. Correct
b. FALSE; Ptolemy put the Sun at the center.
c. FALSE; The planet stays on the deferent circle.
d. FALSE; The Earth is at the center of the epicycle.
e. FALSE; Both c and d are correct.
Answer: a. Correct
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A 25-kg piece of equipment can be hung by steel wires of length 1.00 m, 2.00 m, or 3.00 m. If all the wires have the same diameter, which one will stretch the greatest distance?
A) the 1.00-m wire B) the 3.00-m wire C) the 2.00-m wire D) They will all stretch by the same distance.
A real object is place to the left of a converging lens and an image forms. Then, to the right of the converging lens a diverging lens is placed. A real, inverted final image forms to the right of the diverging lens. Which of the following could give this result?
a. An upright virtual image caused by the first lens forms between the two lenses. b. An inverted real image caused by the first lens forms between the two lenses. c. A real, upright image was formed by the first lens to the right of where the diverging lens is to be placed. d. A real, inverted image was formed by the first lens to the right of where the diverging lens is to be placed.
Suppose the amount of fish caught worldwide, assumed to be a small proportion of the total fish population, grows at an annual rate of 3%. About how long will it take for the fish catch to double?
a. 10 yr b. 13 yr c. 18 yr d. 23 yr e. 33 yr
Genetic modification has met with much more resistance in Europe than in the United States
Why should the Europeans be so against the use of genetically modified organisms (GMO)? Why are Americans less opposed to use of GMO? Are you personally for or against use of GMO? Explain as best you can with the facts available.