How does the wavelength of visible light compare to the wavelengths of other forms of electromagnetic radiation?
A) longer than ultraviolet but shorter than X-ray
B) longer than X-ray but shorter than gamma ray
C) longer than infrared but shorter than radio wave
D) longer than X-ray but shorter than radio wave
Ans: D) longer than X-ray but shorter than radio wave
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What percentage of the solar nebula's mass consisted of hydrogen and helium gases?
A) 0.5 percent B) 5 percent C) 50 percent D) 98 percent E) 100 percent
An object of mass 0.50 kg is transported to the surface of Planet X where the object's weight is measured to be 10 N. The radius of the planet is 4.0 × 10^6 m. What free fall acceleration will the 0.50 kg object experience when transported to a distance of 2.0 × 10^6 m from the surface of this planet?
a. 90 m/s2 c. 13 m/s2 b. 8.9 m/s2 d. 18 m/s2
Kuiper Belt Objects that are caught in a 3:2 orbital resonance with Neptune are referred to as _____
A) aurorae B) plutinos C) ovoids D) ovoli
A river has a steady speed of 0.30 m/s. A student swims downstream a distance of 1.2 km and returns to the starting point. If the student swims with respect to the water at a constant speed and the downstream portion of the swim requires 20 minutes, how much time is required for the entire swim?
a. 50 minutes b. 80 minutes c. 90 minutes d. 70 minutes e. 60 minutes