A spring has 0.770 kg oscillating on it with a period of 1.25 seconds
(a) What is the frequency?
(b) Determine the spring constant.
(c) If the mass is doubled and the spring made 3 times stiffer, what is the new period?
(a) 0.800 Hz
(b) 19.5 N/m
(c) 1.02 s
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_________occurs when there is a change in resistivity in a ferromagnetic material resulting from an application of a magnetic field.
Fill in the blank(s) with the appropriate word(s).
Refracting Telescope: You have available lenses of focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. If you could use any two of these lenses to build a telescope, what is the lens separation for the telescope to provide the maximum magnification for comfortable viewing of a planet?
A. 10.0 cm B. 12.0 cm C. 18.0 cm D. 24.0 cm
Standing Waves on a String: A 25-g string is stretched with a tension of 43 N between two fixed points 12 m apart. What is the frequency of the second harmonic?
A. 6.0 Hz B. 12 Hz C. 18 Hz D. 24 Hz E. 36 Hz
How does Earth's varying distance from the Sun affect our seasons?
A) It doesn't; Earth's orbital distance plays no significant role in the seasons. B) It makes summer warmer in the Northern Hemisphere than in the Southern Hemisphere. C) It is responsible for the fact that the seasons are opposite in the Northern and Southern hemispheres. D) It causes the seasons to be more extreme than they would be if the Earth's distance from the Sun were always the same.