A 56.0 kg bungee jumper jumps off a bridge and undergoes simple harmonic motion. If the period of oscillation is 11.2 s, what is the spring constant of the bungee cord, assuming it has negligible mass compared to that of the jumper?
A) 17.6 N/m
B) 21.1 N/m
C) 28.2 N/m
Answer: A
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Answer the following statement true (T) or false (F)
What property of Mars is responsible for producing the great heights of its volcanoes?
A) Its cold temperatures allow the magma to freeze faster. B) Its thick crust can support larger peaks, and lower surface gravity does not pull them down as much as on Earth. C) Mars has more radioactive material than the Earth. D) Its higher surface gravity allows higher peaks to form. E) Its volcanoes are made of sulfur, like Io's.
A double-convex lens is formed from a piece of plastic with an index of refraction of 1.70. The radius of the front surface has magnitude 20 cm, and the radius of the back surface has magnitude 30 cm. What is the focal length of this lens?
A) 86 cm B) -86 cm C) 43 cm D) -17 cm E) 17 cm
The larger variation in brightness in an eclipsing system consisting of a white dwarf and an M3 main-sequence star occurs when the white dwarf passes behind the M3 star
a. True b. False Indicate whether the statement is true or false