The figure shows two point sources of light, A and B, that emit light waves in phase with each other. A is a distance of 3? from point P. B is distant 5? from P. (? is the wavelength.) The phase difference between the waves arriving at P from A and B is
?
?
a.
0 rad.
b.
? rad.
c.
2? rad.
d.
3? rad.
e.
4? rad.
e
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You are designing a generator with a maximum emf 8.0 V. If the generator coil has 200 turns and a cross-sectional area of 0.030 m2, what would be the frequency of the generator in a magnetic field of 0.030 T?
A) 7.1 Hz B) 7.5 Hz C) 8.0 Hz D) 22 Hz E) 44 Hz
Distance divided by time
A. Gerard de Vaucouleurs |
B. Georges Lemaître |
C. Hubble’s Law |
D. Edwin Hubble |
E. Velocity or Speed |
F. Ho |
Characteristic x-rays are the result of
a. outer electron transitions. b. inner electron transitions. c. nuclear electron states. d. buckytubes.
The process of bonding small solid particles together at high temperature without melting them is called ______________.
Fill in the blank(s) with the appropriate word(s).