Which of these observations of Galileo refuted Ptolemy's epicycles?
A) the complete cycle of Venus' phases
B) the rotation of sunspots across the Sun's surface
C) the revolution of Jupiter's moons around it
D) the craters on the Moon
E) the visibility of many more stars with the telescope
A
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One method of measuring the distance between Earth and the Sun is by bouncing radar waves off the Sun.
Answer the following statement true (T) or false (F)
The circuit below contains three 100-W light bulbs. The emf ? = 110 V. Which light bulb(s) is(are) brightest?
a.
A
b.
B
c.
C
d.
B and C
e.
All three are equally bright.
A magnifying glass has a convex lens of focal length 15 cm. At what distance from a postage stamp should you hold this lens to get a magnification of +2.0?
Examine your graph for Procedure 1 and determine if the relationship between the circumference and the diameter of a circle is a linear relationship? Justify your answer