The Swift satellite observes what portion of the electromagnetic spectrum?
A) gamma-ray
B) X-ray
C) ultraviolet
D) optical
E) All of the above
E
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The element potassium should produce compounds most similar to those of
a. Tc. b. Na. c. Al. d. Sr.
The Doppler shift is the same if the emitting object is moving toward you at some speed, or you (the observer) are moving toward it at that speed and it is still.
Answer the following statement true (T) or false (F)
A particle (charge 7.5 mC) is released from rest at a point on the x axis, x = 10 cm. It begins to move due to the presence of a 2.0-mC charge which remains fixed at the origin. What is the kinetic energy of the particle at the instant it passes the point x = 1.0 m?
a. 3.0 J b. 1.8 J c. 2.4 J d. 1.2 J e. 1.4 J
Volcanoes are so numerous along the margins of the Pacific Ocean that the region has been dubbed the ______________
Fill in the blank(s) with correct word