A 0.30-kg mass is suspended on a spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write down its equation of motion
A) y = (0.01 m) cos (22.1 t)
B) y = (0.01 m) sin (22.1 t)
C) y = (0.03 m) cos (22.1 t)
D) y = (0.03 m) sin (22.1 t)
A
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A. 1.15 B. 1.13 C. 1.11 D. 1.09 E. 1.17
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A. the works of Ptolemy. B. the records of ancient Chinese, Japanese, and Korean astronomers. C. Kepler's laws. D. the notebooks of Galileo.
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(a) Calculate the distance required to reduce a beam of photons of energy 1.0 eV that have entered germanium to 50 percent of the initial intensity. (b) What is the wavelength of photons of energy 1.0 eV? (c) Photons of 1.0 eV correspond to what type of electromagnetic radiation? (d) Comment on using germanium for the lenses of an optical system to operate with 1.0 eV photons.
Convert 1.2 × 10-3 to decimal notation
A) 1.200 B) 0.1200 C) 0.0120 D) 0.0012 E) 0.00012