If the wavelength of an electromagnetic wave is about the radius of the earth, what type of radiation is it?
A. X-ray
B. Visible light
C. Microwave
D. Radio wave
E. Wavelengths can't be that big.
D. Radio wave
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The horizontal rows of the periodic table are called ______________
Fill in the blank(s) with correct word
A high tide is occurring at Charleston, South Carolina (80°W, 33°N). What two longitudes are experiencing low tide?
a. 10°E and 170°E b. 10°W and 170°W c. 10°E and 170°W d. 10°W and 170°E
The process that effectively regulates Earth's average temperature is
a. the greenhouse effect. b. Rayleigh scattering. c. the dew point. d. auroras.
The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 0.724 W/m2
What is the maximum value of the magnetic field in the wave? (c = 3.0 x 108 m/s, ?0 = 4? × 10-7 T ? m/A, ?0 = 8.85 × 10-12 C2/N ? m2) A) 77.9 nT B) 55.1 nT C) 38.9 nT D) 108 nT E) 156 nT