A certain kind of glass has nblue = 1.650 for blue light and nred = 1.610 for red light. If a beam of white light (containing all colors) is incident at an angle of 60.6°, what is the angle between the red and blue light inside the glass?

a. 0.91°
b. 0.89°
c. 60°
d. 0.78°
e. 89°


b

Physics & Space Science

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Energy Levels: A highly ionized atom with Z = 5 has only one electron left around it, in its ground state. How much more energy is required to finish the job and have a bare nucleus?

A. 340.0 eV B. 68.0 eV C. 10.9 eV D. 13.1 eV

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What is an atmospheric window?

A. a region in the atmosphere where light can get through B. a part of the upper atmosphere with depleted ozone C. a region in the atmosphere where infrared radiation can penetrate D. a range of wavelengths of electromagnetic radiation which transmit through Earth's atmosphere

Physics & Space Science

An object accelerates when it slows or its direction of movement changes

a. true b. false

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A 620-g object traveling at 2.1 m/s collides head-on with a 320-g object traveling in the opposite direction at 3.8 m/s. If the collision is perfectly elastic, what is the change in the kinetic energy of the 620-g object?

A) It loses 0.23 J. B) It gains 0.69 J. C) It loses 0.47 J. D) It loses 1.4 J. E) The energy of the object is unchanged.

Physics & Space Science