The parallax shift for all stars is very small
Indicate whether the statement is true or false
TRUE
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A 1.20-kg ball is hanging on the end of a rope. The rope makes an angle 25.0° from the vertical when a 15.0 m/s horizontal wind blows. If the wind's force on the rope is negligible, what is the drag force on the ball?
A) 32.3 N B) 24.1 N C) 3.68 N D) 5.49 N E) 11.8 N
The Q value for a particular reaction is -2.4 MeV, and the reaction's threshold energy is 9.60 MeV. What is the ratio of the mass of the incident particle to the mass of the stationary target nucleus?
A) 5 B) -0.75 C) 3 D) 0.25 E) 4
Fraud in science is rare because it is difficult to commit. Why is it difficult to commit fraud in science?
a. Science requires that experimental and theoretical findings be reproducible. b. All scientists are bound by a code of ethics preventing them from publishing fraudulent work. c. Scientific results are reviewed by other scientists before they are published. d. Scientific journals only allow certain highly trusted individuals to publish their work. e. a and c above
The Saturnian moons of most interest to exobiologists are
A) Rhea and Iapetus. B) Phoebe and Dione. C) Mimas and Tethys. D) Hyperion and Miranda. E) Titan and Enceladus.