The energy per photon in ultraviolet light is greater than in
A) radio waves.
B) microwaves.
C) visible light.
D) all of the above
E) none of the above
Answer: D
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Light is refracted through a diamond. If the angle of incidence is 30°, and the angle of refraction is 12°, what is the index of refraction?
a. 1.3 b. 2.4 c. 2.6 d. 1.8 e. 0.4
A long solenoid (n = 1200 turns/m, radius = 2.0 cm) has a current of a 0.30 A in its winding. A long wire carrying a current of 20 A is parallel to and 1.0 cm from the axis of the solenoid. What is the magnitude of the resulting magnetic field at a point on the axis of the solenoid?
a. 0.60 mT b. 0.85 mT c. 52 ?T d. 0.40 mT e. 0.75 mT
The Algol paradox is concerned with ____
a. the difference between spherical and lobed appearance of planetary nebulae b. production of heavy elements in supernova events c. stars in close binaries that are lower mass, but more evolved, than their companion d. the cooling of matter falling into a compact object in an accretion disk e. the change in stellar winds from normal to superwind conditions
Rocks are found on the surface of another planet which appear to have once been transformed at high temperatures and pressures deep within the planet. Given this, they are most likely to be classified as
A) igneous B) meteoritic C) sedimentary D) metamorphic