When a beam of light, originally traveling in air, enters a piece of glass having an index of refraction of 3/2, its speed
A) increases by a factor of 3/2.
B) is reduced to 2/3 its original value.
C) is unaffected.
B
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Light from an incandescent wire disperses into a(n) ______________ spectrum
Fill in the blank(s) with correct word
You are asked to design a coil to operate in air that will produce a flux density of 0.01T. The maximum current for the coil wire is 1 A, and the space available for the coil limits the length to 1 cm. How many loops are required for this coil? Round your answer to the nearest whole number.
What will be an ideal response?
A 0.50 gas tank holds 3.0 moles of ideal diatomic nitrogen gas at a temperature of The atomic mass of nitrogen is . What is the rms speed of the molecules? (The Boltzmann constant is 1.38 × 10-23 J/K, NA = 6.022 × 1023 molecules/mol.)
A) 560 B) 790 C) 390 D) 21 E) 97
You shout at a cliff, and hear your echo in 2 seconds. If the speed of sound in the air is 340 m/s, the distance of the cliff from you is
a. 85 m b. 170 m c. 340 m d. 680 m e. none of the above