Detonation of a fission-type uranium bomb begins by
A) splitting uranium.
B) pressing together pieces of uranium.
C) igniting a small conventional bomb.
D) all of the above
E) none of the above
Answer: B
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Two thin layers of material with different indices of refraction are coated on a glass plate. The outer first material has n1 = 1.404, the inner second material has n2 = 1.176, and the glass has nglass = 1.62 . If light is incident from air on the first layer, what is the phase change relative to that of the first layer reflection for light that reflects from the glass?
a. 180° c. 360° b. 540° d. 0°
The vibrations of a transverse wave move
A) along the direction of wave travel. B) at right angles to the direction of wave travel. C) that changes with speed.
Are the ring particles of Uranus primordial? Why or why not?
What will be an ideal response?
Consider an RLC circuit. The impedance of the circuit increases if XL increases
A) always true B) never true C) true only if XL is greater than or equal to XC D) true only if XL is less than or equal to XC