The wavelength of the wave shown in this figure is about
a.
2 m.
b.
1.75 m.
c.
0.33 m.
d.
not defined.
e.
slightly over 5 m.
b
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All waves have in common a
A) pattern. B) vibrating source. C) variable regions of high and low pressure. D) none of the above
Two long straight wires carry currents perpendicular to the xy plane. One carries a current of 50 A and passes through the point x = 5.0 cm on the x axis. The second wire has a current of 80 A and passes through the point y = 4.0 cm on the y axis. What is the magnitude of the resulting magnetic field at the origin?
a. 200 ?T b. 600 ?T c. 450 ?T d. 300 ?T e. 400 ?T
What do all the stars in the Orion Association have in common?
What will be an ideal response?
The hydrogen spectrum has a red line at 656 nm, and a blue line at 434 nm. What is the first order angular separation between the two spectral lines obtained with a diffraction grating with 5000 rulings/cm?
a. 7.7° b. 16.6° c. 6.6° d. 3.2° e. 19.2°