Unpolarized light of intensity I0 passes through two sheets of ideal polarizing material. If the transmitted intensity is 0.24 I0, what is the angle between the polarizer and the analyzer?
a. 61°
b. 46°
c. 61°
d. 76°
e. 0.81°
b
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An adiabatic expansion refers to the fact that
a. no heat is transferred between a system and its surroundings. b. the pressure remains constant. c. the temperature remains constant. d. the volume remains constant.
The most abundant element in Earth's core is ________.
A. iron B. hydrogen C. oxygen D. nitrogen
A parallel-plate capacitor has plates of area 0.40 m2 and plate separation of 0.20 mm
The capacitor is connected across a 9.0-V potential source. (?0 = 8.85 × 10-12 C2/N ? m2) (a) What is the magnitude of the electric field between the plates? (b) What is the capacitance of the capacitor? (c) What is the magnitude of the charge on each plate of the capacitor?
If a planet has a radius 20% greater than that of the Earth but has the same mass as the Earth, what is the acceleration due to gravity at its surface?
a. 14 m/s2 c. 8.1 m/s2 b. 12 m/s2 d. 6.8 m/s2