Explain the horse’s field of vision.
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Because a horse has more developed monocular vision than binocular vision, it sees a different picture out of each eye very well but cannot see as clear a picture with both eyes directly in front of it. Horses have circular vision, and each eye has its own circular field. These circles barely meet at a point in front of the horse. As a result, the horse cannot see what is directly in front of it. It must turn or lift its head to see objects within 4 to 6 feet of it. It also cannot see directly behind itself_
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When electricity flows near or through the heart for only a short period of time, it can cause ____________________ of the heart, in which the heart only flutters instead of beats.
Fill in the blank(s) with the appropriate word(s).
Answer the following statement(s) true (T) or false (F)
1. Direct current is used for various electrochemical processes, including electroplating, refining of copper and aluminum, electrotyping, production of industrial gases by electrolysis, and charging of storage batteries. 2. A basic knowledge of trigonometry is essential to an understanding of alternating-current concepts. 3. If the generator has two pairs of poles, then a cycle is generated every half-revolution, or 2 hertz per second. 4. Alternating-voltage waveforms are all sine waves. 5. In electronics, the frequencies used cover a very narrow range.
The redox potential is a measure of:
A) carbon dioxide content. B) the tendency of a substance to accept or donate electrons. C) molecular oxygen content. D) the balance between hydrogen and hydroxyl ions in solution. E) the ferric ion content.
Live five common types of switches.
What will be an ideal response?