The book "De Revolutionibus Orbium Coelestium"
a. describes how Galileo's observations and Kepler's calculations proved the Copernican theory.
b. describes the construction of Galileo's telescope and his observations.
c. is a dialog written to convince the general public of the merits of the Copernican theory.
d. first described the Copernican theory.
e. describes the Tychonian theory.
d
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One member of a pair of parallel conducting plates has potential 17 V. An electron is ejected from that plate at potential and travels the other plate, attaining a velocity of 
when it arrives. What is the potential of the second plate? The mass of the electron is 
kg.
A. 157 V B. 89 V C. 72 V D. -54 V E. 142 V
The full Moon is brighter than Venus regardless of how bright Venus is in the sky on any night as viewed from Earth
a. True b. False Indicate whether the statement is true or false
Answer the following statement(s) true (T) or false (F)
1. In figure R2.12, the object whose world line is labelled B is moving along the x axis. 2. Coordinate time would be frame-independent if the Newtonian concept of time were valid. Consider a Home Frame and an Other Frame that moves in the +x direction with respect to the Home Frame. 3. Observers in the Home Frame will conclude that the clocks in an Other Frame will be out of synchronization, even if the observers in the Other Frame have carefully synchronized clocks using the Einstein prescription.
The sodium salt of a fatty acid is known as a(n) ______________
Fill in the blank(s) with correct word