Electric resistance in a copper wire changes with the temperature of the wire. If C(t) is the electric resistance at temperature t, in degrees Fahrenheit, then the resistance ratio C(t)/C(0) can be measured. Temperature t, C(t) ratio C(0) in °F. 1 10 1.0393 20 1.0798 30 1.1215 40 1.1644 Find a a polynomial function and stimate the resistance ratio C(t)/C(0) of the copper wire at 7 °F using:

Electric resistance in a copper wire changes with the temperature of the wire. If C(t) is the electric resistance at temperature t, in degrees Fahrenheit, then the resistance ratio C(t)/C(0) can be measured. Temperature t, C(t) ratio C(0) in °F. 1 10 1.0393 20 1.0798 30 1.1215 40 1.1644 Find a a polynomial function and stimate the resistance ratio C(t)/C(0) of the copper wire at 7 °F using:

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter5: Exponential And Logarithmic Functions

Section: Chapter Questions

Problem 8PS

See similar textbooks

Similar questions

Maximize volume An open box is to be constructed from a piece of cardboard 20 inches by 24 inches by cutting a square of length x from each corner and folding up the sides as shown in the figure. a. Write a polynomial function V(x) that expresses the volume of the constructed box as a function of x. b. Use the theory learned about graphing polynomial functions and graph V(x). c. What is the domain of the function as it relates to the application problem? d. Use a graphing calculator to graph the function, and estimate the value of x that gives the maximum volume and then estimate the maximum volume. Round to one decimal place.
Poiseuilles Law for Rate of Fluid Flow Poiseuilles law for the rate of flow of a fluid through a tube is a fourth-order polynomial that is also a power function: F=cR4, where F is the flow rate measured as a volume per unit time, c is a constant, and R is the radius of the tube. a. Assume that R increases by 10. Explain why F increases by 46.41. Hint: Consider 1.10 raised to the fourth power. b. What is the flow rate through a 3/4inch pipe compared with that through a 1/2inch pipe? c. Suppose that an artery supplying blood to the heart muscle see Figure 5.86 is partially blocked and is only half its normal radius. What percentage of the usual blood will flow through the partially blocked artery?
Torricelli's Law Water in a tank will out of a small hole in the bottom when tank is nearly full than when it is nearly empty. According to Torricelli's Law, the Height h(t) of water remaining at time t is a quadratic function of t. A certain tank is filled with and allowed to drain. The height of Water is measured at different times as shown in the table. (a) Find the quadratic polynomial that best fits data. (b) Draw a graph of the polynomial from part(a) together With a scatter plot of the data. (c) Use your graph from part (b) to estimate how long it takes for the tank to drain completely.
Local extrema these exercises involve local maximaand minima of polynomial functions. Graph the function P(x)=(x2)(x4)(x5) and determine how many local extrema it has. If a < b < c, explain why the function P(x)=(xa)(xb)(xc) must have two local extrema-
(a) Give the general form of polynomial function P of degree n. (b) What does it mean to say that c is a zero of P? Give two equivalent conditions that tell us that c is a zero of P.
Modeling Polynomials Sketch the graph of a fifth-degree polynomial function that has a zero of multiplicity 2and a negative leading coefficient. Sketch the graph of another polynomial function with the same characteristics except that the leading coefficient is positive.
Modeling Polynomials Sketch the graph of a fourth-degree polynomial function that has a zero of multiplicity 2 and a negative leading coefficient. Sketch the graph of another polynomial function with the same characteristics except that the leading coefficient is positive.
Too Many Corn Plants per Acre? The more corn a farmer plants per acre, the greater is the yield the farmer can expect. But only up to a point, many plants acre can cause Overcrowding and decrease yields, data give yields per acre for various densities of corn plantings, as found by researchers at a university test farm. (a) Find the quadratic polynormal that best fits the data. (b) Draw a graph of the polynomial from part (a) together with a scatter plot of the data. (c) use your result (b) to estimate the yield for 37000 plants per acre.
Think About It Sketch the graph of a fifth-degree polynomial function whose leading coefficient is positive and that has a zero at x=3of multiplicity 2.