Radio waves, visible light, and X-rays are all types of electromagnetic radiation
Indicate whether the statement is true or false
TRUE
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Why did Copernicus hesitate to consider alternatives to the Ptolemaic Universe? a. A heliocentric Universe contradicted Christian theology at the time
b. There was no way to prove uniform circular motion. c. New star formation showed no parallax. d. Most people already believed in a heliocentric Universe. e. His mathematics could not disprove Ptolemy's epicycles, deferents and equants.
The figure below shows a planet traveling in a clockwise direction on an elliptical path around a star located at one focus of the ellipse. When the planet is at point A,
A. its speed is constant. B. its speed is increasing. C. its speed is decreasing. D. its speed is a maximum. E. its speed is a minimum.
Two tuning forks with frequencies 264 and 262 Hz produce "beats". What is the beat frequency (in Hz)?
a. 4 b. 2 c. 1 d. 3 e. 0 (no beats are produced)
Each white dot in this figure represents the location of a small body in our solar system. The donut-shaped ring of white dots represents the region of our solar system that we call
A) the asteroid belt. B) the Kuiper belt. C) the Oort cloud. D) the Sun's rings.