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Author Archives: Anonymous

The physical quantity “impulse” has the same dimensions as t…

The physical quantity “impulse” has the same dimensions as that of:

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An inelastic collision is one in which:

An inelastic collision is one in which:

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In a one-dimensional collision,

In a one-dimensional collision,

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The momentum of an object at a given instant is in the same…

The momentum of an object at a given instant is in the same direction as its:

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A force F (larger than the largest possible force of static…

A force F (larger than the largest possible force of static friction) is applied to the left to an object moving to the right on a horizontal surface. Then:

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The process of people, organizations, and a community workin…

The process of people, organizations, and a community working together to achieve a goal is called _____________. 

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Children can not be prostitutes.

Children can not be prostitutes.

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Match the following terms with their definitions. Write ONLY…

Match the following terms with their definitions. Write ONLY the NUMBER that is in the column on the left of the definitions in the answer field next to each term.  (There are more definitions than needed.)     Terms:  ion – [ion] compound – [comp] isotopes – [iso]    chemistry – [chem]     hypothesis – [hyp]          Definitions:      Options: 1   well-substantiated, comprehensive, testable explanation of a particular aspect of nature 2  matter that can be separated into its components by physical means 3  substance that is composed of a single type of atom; a substance that cannot be decomposed by a chemical change 4  pure substance that can be decomposed into two or more elements 5  tentative explanation of observations that acts as a guide for gathering and checking information 6  study of the composition, properties, and interactions of matter 7  statement that summarizes a vast number of experimental observations, and describes or predicts some aspect of the natural world 8  electrically charged atoms or molecules (contains unequal numbers of protons and electrons) 9  atoms that contain the same number of protons but different numbers of neutrons 

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Answer true (t) or false (f).  Make sure to only enter your…

Answer true (t) or false (f).  Make sure to only enter your answer as a lower case t for true or a lower case f for false.  The final answer, bolded and underlined,  in the following calculation has been reported with the correct number of significant figures: 2.3 + 8.259 = 10.559 = 11  [1]   A bulls eye with darts can be used to represent accuracy and precision of data.  The image in Figure 1 shows three arrows very close together on the second ring of a three-ring bulls eye.  The data represented in Figure 1 can best be classified as accurate but not precise. [2]  Figure 1:       “The molecule of glucose contains 6 C atoms, 12 H atoms, and 6 O atoms.” The underlined and bolded portion in this statement is an example of the symbolic domain used in chemistry. [3]   Pancake syrup is a homogenous mixture. [4] Buckminsterfullerene is a type of fullerene with the formula C₆₀. Buckminsterfullerene is a compound. [5] The atomic mass of Kr is 36. [6] The subatomic particle of the neutron has a +1 charge. [7] The compound of CO is an ionic compound.  [8] The chemical formula below is an example of an empirical formula. [9] C3H8 Germanium, 32Ge, is a metalloid. [10]

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A 5-years-old child has Rocky Mountain Spotted Fever, a Rick…

A 5-years-old child has Rocky Mountain Spotted Fever, a Rickettsia infection. What antibiotic should you give this child?

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