All the following types of objects are found almost exclusively in the disk (rather than the halo) of the Milky Way except ________
A) X-ray binaries B) high-mass, red supergiant stars
C) young stars D) globular clusters
D
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List the three types of nebulae in the Interstellar Medium
What will be an ideal response?
One type of strain gauge consists of a long thin wire or foil that is folded multiple times, as shown in Figure 6.30. The strain gauge is embedded in an adhesive tape so that the gauge can be attached to a specimen. The wire strains the same amount as the specimen does. Determine the relationship between the change in resistance ?R and the strain (?). Assume that the resistivity (?) of the wire is constant over this strain range and that the material has a Poisson’s ratio of ?. This is a difficult problem.
What will be an ideal response?
Chris and Jamie are carrying Wayne on a horizontal stretcher. The uniform stretcher is 2.00 m long and weighs 100 N. Wayne weighs 800 N. Wayne's center of gravity is 75.0 cm from Chris. Chris and Jamie are at the ends of the stretcher. The force that Chris is exerting to support the stretcher, with Wayne on it, is
A. 250 N. B. 350 N. C. 400 N. D. 550 N. E. 650 N.
The power rating of a resistor is 0.80 W. If the value of the resistor is 400 ?, what is the maximum current it can draw?
A) 45 mA B) 18 mA C) 4.4 mA D) 2.0 mA E) 320 mA