Calculus
6th Edition
ISBN: 9781465208880
Author: SMITH KARL J, STRAUSS MONTY J, TODA MAGDALENA DANIELE
Publisher: Kendall Hunt Publishing
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Chapter 7.6, Problem 38PS
To determine
To find: the effect when the circuit has "long run" current
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2. Thermistors measure temperature, have a nonlinear output and are valued for a limited
range. So when a thermistor is manufactured, the manufacturer supplies a resistance vs.
temperature curve. An accurate representation of the curve is generally given by
= a₁ + a₂ ln(R) + a₂ {ln (R)}² + a₂ {ln (R)}³
where T is temperature in Kelvin, R is resistance in ohms, and a 9₁, 9₂, a are constants of
the calibration curve.
Given the following for a thermistor
R
T
ohm
°C
1101.0 25.115
911.S 30.151
656.0
40.120
451.1
50.128
Approximate the value of temperature in °C for a measured resistance of 900 ohms. (Use
any method)
13. Please provide a step y step solutuon for this problem.
51. If objects of weights x and wi are suspended from the balance in Figure 14(A), the cross-beam is horizontal if
bx = aw1. If the lengths a and b are known, we may use this equation to determine an unknown weight x by selecting wi
such that the cross-beam is horizontal. If a and b are not known precisely, we might proceed as follows. First balance x
by wi on the left as in (A). Then switch places and balance x by uwz on the right as in (B). The average = (w1 + w2)
gives an estimate for x. Show that i is greater than or equal to the true weight x.
(A)
(B)
FIGURE 14
Chapter 7 Solutions
Calculus
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