Q: Displacement, velocity, acceleration, and force are examples of what type of quantity that has magnitude and direction? Read this paragraph and choose the correct option from the provided answers: Vectors in Two Dimensions A vector is a quantity that has magnitude and direction. Displacement, velocity, acceleration, and force, for example, are all vectors. In one-dimensional, or straight-line, motion, the direction of a vector can be given simply by a plus or minus sign. In two dimensions (2-d), however, we specify the direction of a vector relative to some reference frame (i. , coordinate system), using an arrow having length proportional to the vector's magnitude and pointing in the direction of the vector. Figure 3.9 shows such a graphical representation of a vector, using as an example the total displacement for the person walking in a city considered in Kinematics in Two Dimensions: An Introduction. We shall use the notation that a boldface symbol, such as D , stands for a vector. Its magnitude is represented by the symbol in italics, D , and its direction by . Vectors in this Text In this text, we will represent a vector with a boldface variable. For example, we will represent the quantity force with the vector F , which has both magnitude and direction. The magnitude of the vector will be represented by a variable in italics, such as. Choices: - cycles - wave - frequency - vector A:
vector
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Q: Somatic, autonomic, and enteric structures are part of what system? Read this paragraph and choose the correct option from the provided answers: Figure 12.6 Somatic, Autonomic, and Enteric Structures of the Nervous System Somatic structures include the spinal nerves, both motor and sensory fibers, as well as the sensory ganglia (posterior root ganglia and cranial nerve ganglia). Autonomic structures are found in the nerves also, but include the sympathetic and parasympathetic ganglia. The enteric nervous system includes the nervous tissue within the organs of the digestive tract. Choices: - circulatory system - circulatory system - adrenal system - nervous system A:
nervous system
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Q: What do most species of monkeys have that no apes or humans do? Read this paragraph and choose the correct option from the provided answers: What's the difference between monkeys and apes? The easiest way to distinguish monkeys from the other primates is to look for a tail. Most monkey species have tails, but no apes or humans do. Monkeys are much more like other mammals than apes and humans are. Choices: - five fingers - large brain - fur - tail A:
tail
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Q: What is it called when two alleles are both expressed in the heterozygous individual? Read this paragraph and choose the correct option from the provided answers: Codominance is when two alleles are both expressed in the heterozygous individual. Choices: - weak dominance - low dominance - shared dominance - codominance A:
codominance
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