"Two planets are orbiting a star in a distant galaxy. Thefirst has a semimajor axis of 150× 10power6 km, an eccentricity of 0.20, and a period of 1.0Earth years. The second has a semimajor axis of 250×10 pwer6 km, an eccentricity of 0.30, and a period of: "
"A. 0.46 Earth years B. 0.57 Earth years C. 1.4 Earth years D. 1.8 Earth years E. 2.2 Earth years"
"Planet 1 and planet 2 are both in circular orbits around the same central star. The orbit of planet 2 has a radius that is much larger than the radius of the orbit of planet 1. This means that:"
"A. the period of planet 1 is greater than the period of planet 2 and the speed of planet 1 is greater than the speed of planet 2 B. the period of p...
"The speed of a comet in an elliptical orbit about the Sun: "
"A. decreases while it is receding from the Sun B. is constant C. is greatest when farthest from the Sun D. varies sinusoidally with time E. equal...
H2O(l) → H2O(g) ΔH° = 44 kJ/mol; the vaporization of water is an endothermic process. In order to evaporate, water must absorb heat from the surround...
In chemistry, an ionic compound is often a chemical compound where ions are held together in a very lattice structure by ionic bonds. The positively...
There are a total of five d orbitals and each orbital can hold two electrons.