Which statement best describes an extrasolar planet?
a. A planet that orbits closely to the Sun in our Solar System
b. A new planet not previously accounted for within our Solar System.
c. A planet smaller and icier than the other planets in our Solar System.
d. A planet discovered orbiting another star outside of our Solar System.
e. A planetary body that orbits just beyond Neptune.
d
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In the collapse of a protostar ____________________ energy is converted to ____________________ energy
Fill in the blank(s) with correct word
An airplane traveling at half the speed of sound emits sound at a frequency of 5 000 Hz. At what frequency does a stationary listener hear the sound as the plane approaches, and after it passes by? Assume the airplane is not flying very high
A slice of bread contains about 90 kcal. If specific heat of a person were 1.00 kcal/kg•°C, by how many °C would the temperature of a 70.0-kg person increase if all the energy in the bread were converted to heat?
a. 2.25°C c. 1.43°C b. 1.86°C d. 1.29°C
The silica content of magma greatly affects its viscosity. Magma with a high silica content has a
A) high viscosity and flows quickly. B) high viscosity and flows slowly. C) low viscosity and flows quickly. D) low viscosity and flows slowly.