Determine whether each change is physical or chemical. What kind of property (chemical or physical) is demonstrated in each case? A copper wire is hammered flat. Copper wire being hammered flat is a physical change because the composition has not …
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Question: The woman in the above example is shocked that the ring is fake and returns it. She buys a new ring that has a mass of 4.53 g and a volume if 0.212 cm3 . Is this ring genuine? Answer: …
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The Toyota Prius, a hybrid electric vehicle, has an EPA gas mileage rating of 52 mi/gal in the city. How many kilometers can the Prius travel on 15 liters of gasoline? This problem is trying to determine how many kilometers …
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A metal cube has an edge length of 11.4 mm and a mass of 6.67 g. Calculate the density of the metal and refer to Table 1.4 to determine the likely identity of the metal. Considering that density for a …
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Discuss the methods of undetermined coefficients and variation of parameters can be combined to solve the given DE: The auxiliary equation yields . Therefore . Next the presence of in g(x) suggests that the particular solution includes a linear polynomial and solved …
Is the set of functions linearly dependent or linearly independent on (−∞, ∞)? Discuss. Functions will only be Linearly dependent when the meet these requirements: Within the functions intervals of , we will have multiple constants ‘c’. All of our constants …
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In the treatment of cancer of the thyroid, the radioactive liquid Iodine-131 is often used. Suppose that after one day in storage, analysis shows that an initial amount A0 of iodine-131 in a sample has decreased by 8.3%. (a) Find …
In one model of the changing population P(t) of a community, it is assumed that where dB/dt and dD/dt are the birth and death rates, respectively. (a) Solve for P(t) if dB/dt=k1P and dD/dt=k2P. (b) Analyze the cases k1>k2, …
In one model of the changing population P(t) of a community, it is assumed that Read more »
Suppose a small single-stage rocket of total mass m(t) is launched vertically, the positive direction is upward, the air resistance is linear, and the rocket consumes its fuel at a constant rate. A mathematical model for the velocity v(t) of …
A tank in the form of a right-circular cylinder standing on end is leaking water through a circular hole in its bottom.When friction and contraction of the water at the hole are taken into account,the height h of water in …
