Which of the following are reasonable values for the magnitude of a vector?
(i) 0
(ii) -1
(iii) +1
1.all of them
2.(i) and (iii)
3.(i) and (ii)
4.(iii) only
2
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Erwin Schrodinger
A) suggested the existence of matter waves (1924). B) discovered the positron using a cloud chamber (1932). C) was the first to produce diffraction patterns of electrons in crystals (1927). D) developed a wave equation for matter waves (1926). E) set the limits on the probability of measurement accuracy (1927).
A 400-turn circular coil (radius = 1.0 cm) is oriented with its plane perpendicular to a uniform magnetic field which has a magnitude that varies sinusoidally with a frequency of 90 Hz. If the maximum value of the induced emf in the coil is observed to be 4.2 V, what is the maximum value of the magnitude of the varying magnetic field?
a. 59 mT b. 62 mT c. 65 mT d. 68 mT e. 31 mT
The spectrum of radio galaxies indicates the energy is in ________ radiation
Fill in the blank(s) with correct word
A charge -q is far away from a charge -Q which is fixed in place. As -q moves closer to -Q, the work done by the electric field is
A. positive. B. negative. C. zero.