Snell's Law: A plastic cube is immersed in water having an index of refraction of 1.33. A laser beam in the plastic strikes the interface at an angle of 14.5° with the normal in the plastic. In the water, this beam makes an angle of 21.8° with the normal. What is the speed of light in the plastic cube? (c = 3.0 × 108 m/s)
Fill in the blank(s) with the appropriate word(s).
1.52 × 108 m/s
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The three main components of the Milky Way galaxy are the ________, ________, and ________
Fill in the blank(s) with correct word
The total mechanical energy of a simple harmonic oscillating system is
A) zero as it passes the equilibrium point. B) zero when it reaches the maximum displacement. C) a maximum when it passes through the equilibrium point. D) a minimum when it passes through the equilibrium point. E) a non-zero constant.
A particle (m = 2.0 ?g, q = ?5.0 ?C) has a speed of 30 m/s at point A and moves (with only electric forces acting on it) to point B where its speed is 80 m/s. Determine the electric potential difference VA ? VB
a. ?2.2 kV b. +1.1 kV c. ?1.1 kV d. +2.2 kV e. +1.3 kV
Name the primary and secondary colors of the subtractive theory of color