The two principal agents of metamorphism are pressure and ______________
Fill in the blank(s) with correct word
heat
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When light passes through common windowpane, its angle of emergence is
A) usually less than its angle of incidence. B) always less than its angle of incidence. C) the same as its angle of incidence. D) usually more than its angle of incidence. E) always more than its angle of incidence.
What is the relative humidity of air when it is at its dew point?
What will be an ideal response?
A circular loop (area = 0.20 m2) turns in a uniform magnetic field with B = 0.13 T. At an instant when the angle between the magnetic field and the normal to the plane of the loop is ? rads and is decreasing at the rate of 0.50 rad/s, what is the magnitude of the emf induced in the loop?
a. zero b. 13 mV c. 26 mV d. 20 mV
The approximate energy needed to ionize the n = 1 (the deepest) state in hydrogen is
a. 10 eV. b. 10 keV. c. 10 MeV. d. 10 GeV. e. 10 TeV.