The vertical displacement y(x,t) of a horizontal string aligned along the x-axis is given by the equation y(x,t) = (6.00 mm) cos[(3.25 m-1)x - (7.22 s-1)t]. What are the (a) speed and (b) amplitude of this wave?
What will be an ideal response?
(a) 2.22 m/s (b) 6.00 mm
Physics & Space Science
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From what height above the surface of the earth should an object be dropped to initially experience an acceleration of 0.54g? (G = 6.67 × 10-11 N ? m2/kg2, Mearth = 5.97 × 1024 kg, Rearth = 6.38 × 106 m)
A) 2300 km B) 1700 km C) 5400 km D) 2900 km
Physics & Space Science
What physical feature of our planet is most dependent on supernova events?
a. oceans of water b. a breathable atmosphere c. organic chemicals d. uranium in Earth's interior e. a nickel-iron core
Physics & Space Science
Liquid crystal displays make use of
a. interference. b. diffraction. c. specular reflection. d. diffuse reflection. e. polarization.
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Which of the following is an outer planet?
A. Mars B. Jupiter C. Earth D. Venus
Physics & Space Science