If you move an electron from a lower energy level to a higher energy level, you can call the atom a(n) _____
A) excited atom
B) neutral atom
C) disassociated atom
D) grounded atom
A
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The Roche lobe of a star in a binary star system:
A) resembles the ear of Edouard Roche, a French mathematician. B) is, in terms of the star's gravity, its "zone of influence." C) is the part of a rapidly rotating star that will eventually spin away to form planets. D) is the accretion disk around the companion star. E) leads to formation of rings, like around the jovian planets.
Kepler's third law relates the square of the planet's orbital period in years to the cube of its average distance from the Sun in astronomical units
Indicate whether the statement is true or false
How fast must a hydrogen atom be traveling for its kinetic energy to be just enough to excite the ground-state atom to its first excited state in a collision? (1 eV = 1.60 × 10-19 J, mH ? mproton = 1.67 × 10-27 kg)
A) 44.2 km/s B) 21.7 km/s C) 66.5 km/s D) 113 km/s E) 51.0 km/s
A normal lapse rate of 3.5 °F/1000 ft is equivalent to
a. 3.5 °C/m. b. 1.9 °C/1000 ft. c. 3.5 °C/1000 ft. d. 6.5 °C/1000 ft.