A majorette takes two batons and fastens them together in the middle at right angles to make an "x" shape. Each baton was 0.70 m long and each ball on the end is 0.10 kg. (Ignore the mass of the rods.) What is the moment of inertia if the arrangement is spun around an axis formed by one of the batons?
a. 2.5E–2 kg·m2 b. 4.9E–2 kg·m2
c. 7.0E–2 kg·m2 d. 1.4E–1 kg·m2
e. 7.4E–2 kg·m2
a
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A large pipe organ at a church has valves that allow either one end of the pipe to be open and the other end closed, or else both ends open. If when one end is open and the other end is closed the pipe can produce a fundamental frequency of 40 Hz, what will be the fundamental frequency when both ends of the pipe are open?
1.80 Hz 2.40 Hz. 3.20 Hz. 4.10 Hz.
The main reason ocean tides exist is that the pull of the Moon
A) and Sun are in conjunction at high tides and in opposition at low tides. B) is greater on oceans closer to the Moon and less on oceans farther from the Moon. C) is greater on Earth because the Moon is closer to Earth. D) and the Sun on the oceans are in opposite directions. E) none of these
List 7 Physical properties of minerals that are most useful in identifying minerals.
What will be an ideal response.
What is the relationship between the image distance and the object distance for a plane (flat) mirror?
A. They are not related B. The image distance is double the object distance C. The image distance is half the object distance D. They are the same.