A beam of light passes through a polarizer and then an analyzer. In this process, the intensity of the light transmitted is reduced to 10% of the intensity incident on the analyzer
What is the angle between the axes of the polarizer and the analyzer?
71.6°
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Lens-Maker Formula: The curved surface of a 50-cm focal length plano-convex lens has a radius of curvature of 30 cm. What is the refractive index of the glass?
A. 1.6 B. 1.5 C. 1.4 D. 1.3
Because a refrigerator operates by a motor, leaving the refrigerator door open for hours in a closed room
A) increases room temperature. B) decreases room temperature. C) doesn't affect room temperature.
Through what potential difference must an electron (starting from rest) be accelerated if it is to reach a speed of 3.0 × 10^7 m/s?
a. 5.8 kV b. 2.6 kV c. 7.1 kV d. 8.6 kV e. 5.1 kV
Although the United States has less than 5% of the world's population, it accounts for approximately ______________ of the world's annual consumption of fossil fuels
a. 15% b. 25% c. 35% d. 45%