The star Wolf 1061 has a parallax of 2.34 arc seconds, while the star Ross 652 has a parallax of 1.70 arc seconds. What can you correctly conclude?
A) Wolf 1061 must have a larger proper motion than Ross 652.
B) Ross 652 is closer to Earth than Wolf 1061.
C) Both stars are outside the Milky Way galaxy.
D) Wolf 1061 is closer to Earth than Ross 652.
E) Ross 652 must have a larger proper motion than Wolf 1061.
D
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Organisms that are found living kilometers beneath Earth's crust are referred to as
A) asthenophiles B) magmaphiles C) sublithophiles D) endoliths
When we breathe we inhale oxygen, Image, and exhale carbon dioxide, Image, plus water vapor, ImageO. Which likely has more mass, the air that we inhale or the same volume of air we exhale? Does breathing cause you to lose or gain weight?
A) The air we inhale has more mass; Breathing causes you to lose weight. B) The air we exhale has more mass; Breathing causes you to lose weight. C) The air we inhale has more mass; Breathing causes you to gain weight. D) The air we exhale has more mass; Breathing causes you to gain weight.
A current-carrying wire in a magnetic field
A) may be deflected. B) may experience a force. C) both of these D) neither of these
A total impedance of an RC circuit with a capacitance of 40.0 ?F is 800 ?. If the frequency of the applied ac voltage is 18.0 Hz, what is the resistance of the circuit?
A) 569 ? B) 669 ? C) 769 ? D) 869 ? E) 800 ?