The wavelength of a radio wave from an FM station broadcasting at 93.9 megahertz on your radio dial is 0.313 meters
a. True
b. False
Indicate whether the statement is true or false
False
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Light goes from material having a refractive index of n1 into a material with refractive index n2. If the refracted light is bent away from the normal, what can you conclude about the indices of refraction?
A) n1 > n2 B) n1 ? n2 C) n1 < n2 D) n1 ? n2 E) n1 = n2
Two 5.0-µC point charges are 12 cm apart. What is the electric potential (relative to infinity) of this combination at the point where the electric field due to these charges is zero? (k = 1/4??0 = 9.0 × 109 N ? m2/C2 )
A) 25 MV B) 12.5 MV C) 1.5 MV D) 0.0 MV E) 0.75 MV
The density of lead is greater than that of iron, and both are denser than water. Compared to a solid iron object of the same dimensions, the buoyant force acting on a solid lead object is be
1.greater. 2.equal. 3.less.
Projectile Motion: A projectile is launched with an initial velocity of 80 m/s at 30° above the horizontal. Neglecting air resistance, what is horizontal component of the projectile's acceleration?
A. 80 m/s2 B. 40 m/s2 C. 9.8 m/s2 D. 0 m/s2 E. 69 m/s2