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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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
In the collapse of a protostar ____________________ energy is converted to ____________________ energy
Fill in the blank(s) with correct word
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.
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