Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 25, Problem 6Q
To determine
To show that for a thermistor,
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
ssm In the conduction equation Q = (kA AT):/L, the combination
of terms kA/L is called the conductance. The human body has the
ability to vary the conductance of the tissue beneath the skin by means of
vasoconstriction and vasodilation, in which the flow of blood to the veins
7.
and capillaries is decreased and increased, respectively. The conductance
can be adjusted over a range such that the tissue beneath the skin is equiv-
alent to a thickness of 0.080 mm of Styrofoam or 3.5 mm of air. By what
factor (high/low) can the body adjust the conductance?
The equation below defines the performance of a RTD thermometer:
dy
+a,y=F(t) .
dt
Where
a, = 100 °C/V
a, = 225 sec-°C/V
F (t) = 25 °C for t < 0
F (t) = 100 °C for t 20
And the initial temperature of the thermometer before being put in the boiling water at 100 °C is
25 °C. The initial output is 0.25 volts. Find the following:
1. Time constant, t;
2. Static sensitivity coefficient, K;
3. How long it will take for the thermometer to reach the reading of 90 °C .
electrical resistance type thermometer of range -180 C has an inaccuracy of 1%. What is the percentage error if this gauge used to measure a temperature of 45 "C? Is this gauge suitable to measure this value of teperature? What is the range of the gauge to give a maximum error of 0.7% for this readine (45 C? The inaccuracy still ±1%. momcter
Chapter 25 Solutions
Physics Laboratory Experiments
Ch. 25 - Prob. 1ASACh. 25 - Prob. 2ASACh. 25 - Distinguish between a positive and a negative...Ch. 25 - Are the of a metal conductor and the of a...Ch. 25 - What are the circuit conditions when a Wheatstone...Ch. 25 - Prob. 6ASACh. 25 - What is the value of for copper in terms of...Ch. 25 - Prob. 3QCh. 25 - Prob. 4QCh. 25 - Prob. 5Q
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- One process for decaffeinating coffee uses carbon dioxide ( M=44.0 g/mol) at a molar density of about 14,0 mol/m3 and a temperature of about 60 . (a) Is CO2 a solid, liquid, gas, or supercritical fluid under those conditions? (b) The van der Waals constants for carbon dioxide are a=0.3658 Pa m6/mol2 and b=4.286105 m3/mol. Using the van der Waals equation, estimate pressure of CO2 at that temperature and density. `arrow_forwardWhat volume of water at 0°C can a freezer make into ice cubes in 1.0h, if the coefficient of performance of the cooling unit is 6.0 and the power input is 1.8 kilowatt? Express your answer to two significant figures and include the appropriate units.arrow_forward1.7 Ideal gas response functions Find the thermal expansion coefficient and the isothermal compressibility for an ideal gas and show that in this case Cp - Cy = - a² can be reduced to Cp – Cy = Nkg for the molar specific heats. TV Ктarrow_forward
- How would I draw the following graphs for a simple ohmic device from the equations V=IR and P=IV=I^2R=V^2/R: plot V vs. I with constant R, plot P vs V with constant R, plot P vs R with constant I, and plot P vs I with constant R.arrow_forwardConsider a plate-type collector with a wire to plate spacing of 0.115 m (4.5 in.) and an applied voltage of 50 kV. The mean gas velocity through the collector is 1.5 m/s. Estimate the collecting plate length required for a collection efficiency of 100 per- cent for 0.5-um particles at 420°K. Assume that p = 2.1.arrow_forwardQ /Find the next integral: E V 2m(E – %x)dx h aarrow_forward
- 40000cm, and at 1000C its length is 40060cm. (a) What is the linear expansion coefficient of the alloy? (b) what is the temperature when its length is 39975cm?arrow_forwardThe reaction rate for the prepupal development of male Drosophila is temperature-dependent. Assuming that the reaction rate is exponential as in R x e-bdlCB!) , the activation energy for this development is 3.01 x 10-19 J. A Drosophila is originally at 20.10°C, and its temperature is increasing. If the rate of development has increased 3.50%, how much has its temperature increased? The value of the Boltzmann constant is 1.381 x 10-23 J/K (see Table B.1). °Carrow_forwardFind the temperature u(x,t) from the heat equation in a laterally insulated copper bar 80 cm long with c**2=1.158 cm**2/sec. If the initial temperature is represented by the below graph and the ends are kept at 0C.arrow_forward
- In the calibration step of a thermochemistry experiment, a current of 124 mA, from a 24.0 V source was allowed to flow through the electrical heater for219 s and was found to result in an increase in the temperature of the calorimeter and its contents of +1.39 K. Given that the energy supplied by an electrical circuit is the voltage multiplied by the current, multiplied by the time, what is the heat capacity of the calorimeter and its contents? A) 194 JK^-1 B) 322 JK^-1 C) 469 JK^-1 D) 731 JK^-1arrow_forward(a) What is the best coefficient of performance for a refrigerator that cools an environment at -28.5°C and has heat transfer to another environment at 46.5°C? 3.262 (b) How much work in joules must be done for a heat transfer of 4186 kJ from the cold environment? 1283.26 (c) What is the cost (in cents) of doing this if the work costs 15.0 cents per 3.60 x 106 J (a kilowatt-hour)? 5.35 (d) How many k) of heat transfer occurs into the warm environment? 5469.26 kJ (e) Discuss what type of refrigerator might operate between these temperatures. The inside of the refrigerator (actually freezer) is at (-28.5 °C) so this probably is a commercial meat packing freezer. The exhaust is generally vented to the outside so as to not heat the building too much.arrow_forwardPresents the diagram of the problem, necessary formulas, clearance and numerical solution: A poorly designed electronic device has two screws attached to different parts of the device that almost touch each other inside. steel bolts and brass are at different electrical potentials and if they touch, a short circuit will develop will damage the device. The initial separation between the ends of the screws is 5 μm to 27 ◦C. At what temperature will the screws touch? Assume that the distance between the walls of the device is not affected by temperature change and the coefficient coefficients of linear expansion αlaton = 19x10−6 ◦C −1 and αsteel = 11x10−6 ◦C −1arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
