Kepler's laws of planetary motion were _____ because he could not provide an explanation for his conclusions

a. unnatural
b. empirical
c. hypothetical
d. principles
e. assumptions


b

Physics & Space Science

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The energy equation for flow between two parallel plates, neglecting flow in the ydirection, is

Physics & Space Science

What is the average distance between air molecules at STP?

a.
b.
c.
d.

Physics & Space Science

Two flat conductors are placed with their inner faces separated by 6.0 mm. If the surface charge density on one of the inner faces is 40 pC/m2, what is the magnitude of the electric potential differences between the two conductors?

A. 36 mV B. 18 mV C. 32 mV D. 27 mV E. 14 mV

Physics & Space Science

Rigel, a blue supergiant, is 17 times more massive than the Sun and, therefore, is likely ________ in age

Fill in the blank(s) with correct word

Physics & Space Science