Pioneer 10 was able to escape the solar system by
A) having a sufficient escape velocity at launch.
B) "bouncing off" Jupiter like a tennis ball bouncing off an approaching tennis racket.
C) refueling via solar cells.
D) nuclear-powered sustained thrust.
Answer: B
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A body in a room at 300 K is heated to 3,000 K. The wavelength of the most intense EM radiation emitted by the body at 3,000 K is the wavelength of the most intense EM radiation at 300 K
a. 0.0001 times b. 0.1 times c. the same as d. 10 times e. 10,000 times
The hole for a bolt in a brass plate has a diameter of 1.200 cm at 20°C. What is the diameter of the hole when the plate is heated to 220°C? The coefficient of linear thermal expansion for brass is 19 × 10-6/°C
(Express your answer to 4 significant figures.) A) 1.205 cm B) 1.125 cm C) 1.195 cm D) 1.200 cm E) 1.210 cm
What is the wavelength of the line in the Balmer series of hydrogen that is comprised of transitions from the n = 5 to the n = 2 level? (R = 1.097 × 10^7 m?1 and 1 nm = 10?9 m)
a. 304 nm b. 434 nm c. 476 nm d. 95 nm e. 333 nm
A probe in space continues in its motion due to
A) very low friction. B) its own inertia. C) it seeking a continued state of motion. D) none of the above