A planet is located orbiting another star and its radius is about 3 times that of the Earth. It is:
A) a brown dwarf.
B) a Jupiter.
C) a Neptune.
D) a super-Earth.
E) an Earth.
B
Physics & Space Science
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The position of a mass that is oscillating on a spring is given by x = (18.3 cm) cos[(2.35 s-1)t]. What is the frequency of this motion?
A) 0.426 Hz B) 1.34 Hz C) 2.67 Hz D) 0.128 Hz E) 0.374 Hz
Physics & Space Science
A(n) ______________ transfers heat from a low-temperature reservoir to a high-temperature reservoir
Fill in the blank(s) with correct word
Physics & Space Science
The molecular weight of nitrogen is 28 g/mol. What is the rms speed of nitrogen molecules at 8.0°C?
A) 450 m/s B) 500 m/s C) 550 m/s D) 600 m/s E) 650 m/s
Physics & Space Science
A car accelerates from 5.0 m/s to 21 m/s at a constant rate of 3.0 m/s2 How far does it travel while accelerating?
A) 41 m B) 69 m C) 117 m D) 207 m
Physics & Space Science