Bar A has one end painted green and the other end red and may or may not be a magnet. A student brings the north pole of a bar magnet M close to the green end of A. He observes that the green end is attracted. He can conclude that
A. A is a magnet and the green end is a south pole.
B. A might be a magnet; this observation does not provide enough information to determine whether or not it is.
C. A is a magnet and the green end is a north pole.
D. A is not a magnet.
Answer: B
You might also like to view...
You see a waxing crescent moon. You email your friend in New Zealand and ask her what moon phase she sees that night. She says
A) waxing crescent. B) waning crescent. C) waning gibbous. D) waxing gibbous.
When an object is 12 cm in front of a concave spherical mirror, the image is formed 3.0 cm in front of the mirror. What is the focal length of the mirror?
A) 15 cm B) 4.0 cm C) 2.4 cm D) 1.3 cm
In the photosynthesis reaction
A) oxygen combines with the ATP molecule. B) oxygen combines with the carbon in glucose. C) carbon combines with the ATP molecule. D) CO2 combines with glucose. E) CO2 combines with H2O.
Compared to a G-type star, an F-type will have a(n) ________ habitable zone
Fill in the blank(s) with correct word