A(n) ____ is well supported (observationally and/or experimentally) system of rules and principles that can be applied to a wide variety of circumstances but that is not universally accepted
a. hypothesis
b. paradigm
c. theory
d. model
C
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Early astronomers picture the Earth as stationary, with the ________ spinning, moving the stars along with it
Fill in the blank(s) with correct word
Emperor penguins are part of the species forsteri and genus aptenodytes. Given this, their scientific classification would be written
A) Aptenodytes Forsteri B) forsteri Aptenodytes C) Forsteri aptenodytes D) Aptenodytes forsteri
What causes some asteroids leave the asteroid belt and sometimes approach Earth?
A. Because Earth's gravitational field attracts them. B. Because Jupiter's gravitational field ejects them. C. Because they crash into one another and get ejected.
The figure shows the orientation of a flat circular loop consisting of 50 closely wrapped turns each carrying a current I. The magnetic field in the region is directed in the positive z direction and has a magnitude of 50 mT. The loop can turn about the y axis. If ? = 20°, R = 0.50 m, and I = 12A, what is the magnitude of the torque
exerted on the loop?
a.
8.1 N ? m
b.
24 N ? m
c.
22 N ? m
d.
13 N ? m
e.
16 N ? m