University Physics with Modern Physics, Volume 2 (Chs. 21-37); Mastering Physics with Pearson eText -- ValuePack Access Card (14th Edition)
14th Edition
ISBN: 9780134265414
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 42, Problem 42.58PP
To determine
What happens when voltage is kept constant instead of keeping current as constant during the temperature increases from 25°C to 150°C.
- a) At first the current increases, then it decreases.
- b) The current increases.
- c) The current decreases, eventually approaching zero.
- d) The current does not change unless the voltage also changes.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A length of copper wire is connected to a constant voltage source and a current of 0.4 A is precisely measured at a temperature of 34°C. The temperature of the wire increases and later the current is 0.33 A. Find the temperature of the wire when the current is 0.33 A. For copper, ? = 0.0068 °C-1 at 20°C.
Temperature=
Question 1
(a) State Coulomb's Law. What is unit of electric charge?
(b) When a 390 g piece of iron at 200°C is placed in a 85
g copper calorimeter cup containing 230 g of glycerine
at 15°C, the final temperature is observed to be 40°C.
Estimate the specific heat of glycerine.( specific heat of
iron 450 J/kg°C, Specific heat of copper 385 J/kg°C)
A length of iron wire is connected
to a constant voltage source and
a current of 0.3 A is precisely
measured at a temperature of
28°C. The temperature of the wire
increases and later the current is
0.26 A. Determine the
temperature of the wire when the
current is 0.26 A. For iron, a =
0.00651 °C-1 at 20°C. answer- °C
please explain dont skip steps
please
Chapter 42 Solutions
University Physics with Modern Physics, Volume 2 (Chs. 21-37); Mastering Physics with Pearson eText -- ValuePack Access Card (14th Edition)
Ch. 42.1 - If electrons obeyed the exclusion principle but...Ch. 42.2 - Prob. 42.2TYUCh. 42.3 - Prob. 42.3TYUCh. 42.4 - One type of thermometer works by measuring the...Ch. 42.5 - Prob. 42.5TYUCh. 42.6 - Prob. 42.6TYUCh. 42.7 - Suppose a negative charge is placed on the gate of...Ch. 42 - Van der Waals bonds occur in many molecules, but...Ch. 42 - Prob. 42.2DQCh. 42 - The H2+ molecule consists of two hydrogen nuclei...
Ch. 42 - The moment of inertia for an axis through the...Ch. 42 - Prob. 42.5DQCh. 42 - Prob. 42.6DQCh. 42 - Prob. 42.7DQCh. 42 - The air you are breathing contains primarily...Ch. 42 - Prob. 42.9DQCh. 42 - Prob. 42.10DQCh. 42 - What factors determine whether a material is a...Ch. 42 - Prob. 42.12DQCh. 42 - Prob. 42.13DQCh. 42 - Prob. 42.14DQCh. 42 - Prob. 42.15DQCh. 42 - Prob. 42.16DQCh. 42 - Prob. 42.17DQCh. 42 - Prob. 42.18DQCh. 42 - Prob. 42.19DQCh. 42 - Prob. 42.20DQCh. 42 - Prob. 42.21DQCh. 42 - Prob. 42.22DQCh. 42 - Prob. 42.23DQCh. 42 - Prob. 42.24DQCh. 42 - If the energy of the H2 covalent bond is 4.48 eV,...Ch. 42 - An Ionic Bond, (a) Calculate the electric...Ch. 42 - Prob. 42.3ECh. 42 - Prob. 42.4ECh. 42 - Prob. 42.5ECh. 42 - Prob. 42.6ECh. 42 - Prob. 42.7ECh. 42 - Two atoms of cesium (Cs) can form a Cs2 molecule....Ch. 42 - Prob. 42.9ECh. 42 - Prob. 42.10ECh. 42 - A lithium atom has mass 1.17 1026 kg, and a...Ch. 42 - Prob. 42.12ECh. 42 - When a hypothetical diatomic molecule having atoms...Ch. 42 - The vibrational and rotational energies of the CO...Ch. 42 - Prob. 42.15ECh. 42 - Prob. 42.16ECh. 42 - Prob. 42.17ECh. 42 - Prob. 42.18ECh. 42 - Prob. 42.19ECh. 42 - Prob. 42.20ECh. 42 - Prob. 42.21ECh. 42 - Prob. 42.22ECh. 42 - Prob. 42.23ECh. 42 - Prob. 42.24ECh. 42 - Prob. 42.25ECh. 42 - Prob. 42.26ECh. 42 - Prob. 42.27ECh. 42 - Prob. 42.28ECh. 42 - Prob. 42.29ECh. 42 - Prob. 42.30ECh. 42 - Prob. 42.31ECh. 42 - Prob. 42.32ECh. 42 - Prob. 42.33PCh. 42 - Prob. 42.34PCh. 42 - Prob. 42.35PCh. 42 - The binding energy of a potassium chloride...Ch. 42 - (a) For the sodium chloride molecule (NaCl)...Ch. 42 - Prob. 42.38PCh. 42 - Prob. 42.39PCh. 42 - Prob. 42.40PCh. 42 - Prob. 42.41PCh. 42 - Prob. 42.42PCh. 42 - Prob. 42.43PCh. 42 - Prob. 42.44PCh. 42 - Prob. 42.45PCh. 42 - Prob. 42.46PCh. 42 - Prob. 42.47PCh. 42 - Prob. 42.48PCh. 42 - Prob. 42.49PCh. 42 - Prob. 42.50PCh. 42 - Prob. 42.51PCh. 42 - Prob. 42.52PCh. 42 - Prob. 42.53CPCh. 42 - Prob. 42.54CPCh. 42 - Prob. 42.55CPCh. 42 - Prob. 42.56PPCh. 42 - Prob. 42.57PPCh. 42 - Prob. 42.58PP
Knowledge Booster
Similar questions
- An extension cord that you would use for a lamp is much thinner than an extension cord recommended for use with large appliances. If you plugged in a refrigerator using a lamp extension cord, the plastic coating of the cord could melt and perhaps start a fire. Why does this occur? How can this hazard be prevented?arrow_forward(a) Taking into account the thermal expansion of the tungsten filament. You may assume a thermal expansion coefficient of 12×10−6 / ºC . (b) By what percentage does your answer differ ?arrow_forwardA bulb delivers 33 W of radiant energy when its filament is at 1900 °C . If the temperature increases by 100 °C , what is the new rate of energy radiated by this bulb? O 39.51 W 36.11 W O 27.56 W O 40.52 Warrow_forward
- A copper-constantan thermocouple generates a voltage of 4.75 x 10-3 volts when the temperature of the hot junction is 110 °C and the reference junction is kept at 0 °C. If the voltage is proportional to the difference in temperature between the junctions, what is the temperature in degrees Celsius of the hot junction when the voltage is 2.08 x 10-3 volts?arrow_forwardQuestion 4arrow_forwardA copper rod, an aluminum rod, and a brass, each 6.00 m in length and 1.00 cm in diameter, are placed end to end with the aluminum rod between the other two. The free end of the copper rod is maintained at the water’s boiling point, and the free end of the brass rod is maintained at the water’s freezing point. If T1 and T2 are steady-state temperature copper-aluminum junction and aluminum-brass junction respectively. Where TC is the temp at the freezing point of water and TH is the temp at the boiling point of water. Show the derivation of the equation in picture A and picture B for computing its steady-state temperature of copper-aluminum junctionaluminum-brass junction.arrow_forward
- A copper rod, an aluminum rod, and a brass, each 6.00 m in length and 1.00 cm in diameter, are placed end to end with the aluminum rod between the other two. The free end of the copper rod is maintained at the water’s boiling point, and the free end of the brass rod is maintained at the water’s freezing point. If T1 and T2 are steady-state temperature copper-aluminum junction and aluminum-brass junction respectively. Where TC is the temp at the freezing point of water and TH is the temp at the boiling point of water. Show that the steady-state temperature for (a) the copper-aluminum junction and (b) the aluminum-brass junction are the following. Picture T1 is for the copper-aluminum junction. Picture T2 is for the aluminum-brass junction.arrow_forwardA copper rod, an aluminum rod, and a brass, each 6.00 m in length and 1.00 cm in diameter, are placed end to end with the aluminum rod between the other two. The free end of the copper rod is maintained at the water’s boiling point, and the free end of the brass rod is maintained at the water’s freezing point. If T1 and T2 are steady-state temperature copper-aluminum junction and aluminum-brass junction respectively. Where TC is the temp at the freezing point of water and TH is the temp at the boiling point of water. Show the derivation of the equation in picture A and picture B for computing its steady-state temperature of copper-aluminum junctionaluminum-brass junction respectively.arrow_forwardYou are insulating a metal pipe carrying a hot fluid. The outside Diameter of the pipe is 3.5 cm, and the pipe has a length of 7.7 meters. Due to the fluid inside the pipe, the outside surface of the metal fluid pipe is kept at a constant temperature of 85.0°C. The metal pipe is inserted inside of a thin-wall circular tube, which has an inside diameter of 11.2 cm (ignore the resistance of the thin-wall circular tube). The space between the outside of the hot metal pipe and the inside of the thin-wall circular tube is filled with foam insulation, k = 0.036 W/m-K. The outside of the thin-walled circular tube is kept at a constant temperature of 28.0°C. Due to a manufacturing error, the metal pipe was not centered inside the thin-wall tube when the foam insulation was added, but was instead installed with an eccentricity of 2.0 cm (i.e. the center of the metal pipe is 2.0 cm distance from the center of the thin-walled circular tube). Calculate the increase in the heat transfer rate due to…arrow_forward
- A copper rod, an aluminum rod, and a brass, each 6.00 m length and 1.00 cm diameter, are placed end to end with the aluminum rod between the other two. The free end of the copper rod is maintained at water’s boiling point, and the free end of the brass rod is maintained at water’s freezing point. If T1 and T2 are steady-state temperature copper-aluminum junction and aluminum-brass junction respectively. Show that the steady-state temperature for (a) the copper-aluminum junction is:arrow_forwardIn a typical experiment performed to measure the electrical equivalent of heat, the following data are obtained: current drawn, 2.00 A; applied voltage, 3.00 V; mass of water, 122 g; mass of calorimeter, 30.8 g; specific heat of calorimeter, 0.100 cal/g Cº; time of run, 3 minutes; initial temperature of water, 25.5 °C; final temperature of mixture, 27.5°C. Find the value of J from these data.arrow_forwardAn incandescent light bulb has a tungsten filament that is heated to a temperature of 3.00 x103 K when an electric current passes through it. If the surface area of the filament is approximately 1.00 x 10-4 m? and it has an emissivity of 0.370, what is the power radiated by the bulb?The Stefan-Boltzmann constant (0) is 5.670 x 10-8 W/(m 2. k4). Thank u!arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning