Answer:
This is an image of a normal spiral galaxy.
Explanation:
The normal spirals have arms that emanate from the nucleus.
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Answer: In terms of oil reserves, the Middle East is second to none. This “oil miracle” of the world has been shaped by a set of favorable factors, some global and others local, inscribed in the geologic history of the region.
The correct answer is - True.
The Rocky Mountains are the longest mountain range in North America. They have almost a north-south direction. These mountains are going all the way from the Alaska and Canada in the north, through the eastern part of the United States, and to the Mexican frontier. This mountain range is divided into several parts, Arctic Rockies (in the north), Northern Rockies (in Canada), Middle Rockies (through most of the United States), and Southern Rockies (at the Mexican frontier).
The mass of an atom depends only on the mass of the nucleon, since the mass of the electrons is negligibly small. Protons and neutrons have approximately the same mass, which again is equal to the unit mass , and their total number is the mass number of atoms and is denoted by the letter A.
Explanation:
- A proton (p +) is a positively charged particle whose mass is 1u, and its relative charge is q (p) = + 1.
- A neutron (n0) is a neutral particle without charge, of mass approximately equal to that of protons. The relative charge q (n) = 0.
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