Sun's radiant energy is composed of shorter wavelengths than Earth's due to Sun's greater
A) size.
B) surface temperature.
C) both of these
D) neither of these
Answer: B
Physics & Space Science
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Most of Earth's history has been destroyed by an active crust and erosion
a. True b. False Indicate whether the statement is true or false
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A gray (Gy) is
A) 3.70 × 1010 decays/s in radium. B) the SI unit of absorbed dose = 1 J/kg = 100 rad. C) a dosage of 2.58 × 10-4 C/kg. D) the SI unit of radioactivity (= 1 decay/s). E) 10-2 J/kg.
Physics & Space Science
A ______________ is an ultra-hot collection of electrically charged particles
a. gas b. liquid c. plasma d. solid
Physics & Space Science
The first to be credited with the idea that light is quantized was
A) Max Planck. B) Albert Einstein. C) both Planck and Einstein at about the same time.
Physics & Space Science