UHF radio and TV broadcast frequencies are from 300 MHz to 3 GHz. What are the photon energies in joules and eV and the wavelengths of the extremes of UHF waves in air?
What will be an ideal response?
Physics & Space Science
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The coformation hypothesis for the origin of the Moon is difficult to reconcile with the dissimilar ________ and ________ of the Earth and Moon
Fill in the blank(s) with correct word
Physics & Space Science
Pangaea is believed to have broken up about how many years ago?
a. 2000 million b. 2 million c. 20 million d. 200 million
Physics & Space Science
A long wire carrying a 2.0-A current is placed along the y-axis. What is the magnitude of the magnetic field at a point 0.60 m along the x-axis?
A) 6.7 × 10-7 T B) 13 × 10-7 T C) 1.2 × 10-7 T D) 6.7 T E) 12 T
Physics & Space Science
A form of precipitation that results from convection cycles in clouds is
a. sleet. b. rain. c. hail. d. fog.
Physics & Space Science