Why does Ptolemy include epicycles in his model?
What will be an ideal response?
To account for retrograde motion and still preserve uniform circular motion.
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_________ is a form of electromagnetic radiation produced by rapidly moving electrons spiraling through magnetic fields
a. Lagrangian radiation b. Accretion c. Ultraviolet radiation d. Synchrotron radiation e. Infrared radiation
It takes ________ astronauts to operate the Hubble Space Telescope
Fill in the blank(s) with correct word
Most of the information about the Moon's internal structure comes from ________ left on the lunar surface by Apollo astronauts
Fill in the blank(s) with correct word
A hunter points a rifle horizontally and holds it 3.30 m above the ground. The bullet leaves the barrel at 325 m/s and experiences no significant air resistance. The acceleration due to gravity at this location is 9.80 m/s2
(a) How long does it take for the bullet to strike the ground? (b) How far horizontally does it travel?