If you run a complete loop around an outdoor track of length 400 m in 100 s, find your
(a) average velocity and (b) average speed.
What will be an ideal response?
(a) 0 m/s (b) 4 m/s
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Sound is produced by a pipe that is closed on one end. The standing waves must have
A. no antinodes in the pipe. B. just one node in the pipe. C. at least one node in the pipe. D. at most one antinode in the pipe.
Vision Problems: What is the power of the lens that has a focal length of 40 cm and a diameter if 5.0 cm?
A. -2.5 diopters B. +20 diopters C. +0.20 diopters D. +2.5 diopters E. +2.7 diopters
Match the planet's position at points 1, 2, 3, and 4 in the plot with the descriptions in question 3.
What will be an ideal response?
Each diagram shows five star circles. Look at the first circle to the north of the celestial equator on each diagram. Can you characterize the declination of stars on this circle? If so, what is it? Can you characterize the right ascension of stars on this circle? If so, what is it?
What will be an ideal response?