Astronomers have determined the detailed composition of all confirmed exoplanets
Indicate whether the statement is true or false
FALSE
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Intensity: An 800-kHz sinusoidal radio signal is detected at a point 2.1 km distant from a transmitter tower. The electric field amplitude of the signal at that point is 0.80 V/m. Assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed. What is the intensity of the radio signal at that point? (?0 = 8.85 × 10-12 C2/N ? m2, ?0 = 4? × 10-7 T ? m/A, c = 3.0 × 108 m/s)
A. 8.5 × 10-4 W/m2 B. 1.2 × 10-3 W/m2 C. 1.7 × 10-3 W/m2 D. 6.0 × 10-4 W/m2 E. 4.2 × 10-4 W/m2
Concentrations of ozone-eating atoms or molecules in the neighborhood of one in a thousand pose no threat to the ozone layer
What will be an ideal response?
What is exchanged between different particles in order to make the forces work?
A. quarks B. leptons C. bosons D. baryons E. electrons
A galaxy that has gone through many collisions and mergers must be a(n) _______________ galaxy
Fill in the blank(s) with correct word