The Viking landers searched for life on ____________________
Fill in the blank(s) with correct word
Mars
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Batter up! Your bat hits the ball pitched to you with a 1500-N instantaneous force. The ball hits the bat with an instantaneous force, whose magnitude is
A) somewhat less than 1500 N. B) exactly equal to 1500 N. C) essentially zero. D) somewhat greater than 1500 N.
A body oscillates with simple harmonic motion along the x axis. Its displacement varies with time according to the equation x = 5 sin (?t + ?/3). The phase (in rad) of the motion at t = 2 s is
a. 7?/3 b. ?/3 c. ? d. 5?/3 e. 2?
Two pieces of optically flat glass (n = 1.50 ) touch at one edge and a separated by a thin stretched fiber at the opposite edge. Light of wavelength 500 nm is shone from above and 100 dark fringes are counted. How thick is the fiber?
A) 13 ?m B) 100 ?m C) 5 ?m D) 50 ?m E) 25 ?m
Nuclear power plants on Earth generate energy through _____
A) nuclear fission reactions B) nuclear fusion reactions C) nuclear convection reactions D) nuclear evaporation reactions