Question

The temperature of a sample of tungsten is raised while a sample of copper is maintained...

The temperature of a sample of tungsten is raised while a sample of copper is maintained at
20.0°C. At what temperature will the resistivity of the tungsten be four times that of the copper?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A tungsten filament with 5.00 mV applied across it has a current of 1.35 mA and...
A tungsten filament with 5.00 mV applied across it has a current of 1.35 mA and a temperature of 20.0 degrees C. When 5.00 V are applied across the filament, it has a current of 0.250 A. (a) What is the temperature of the tungsten filament with 5.00 V across it? (Tungsten has a resistivity of 5.60 x 10-8 W m at 20.0 degrees C, and a temperature coefficient of resistivity of 4.50 x 10-3 degrees C-1.) (b) If the...
At what temperature will aluminum have a resistivity that is two times the resistivity of copper...
At what temperature will aluminum have a resistivity that is two times the resistivity of copper at room temperature? °C
At what temperature will aluminum have a resistivity that is two times the resistivity of copper...
At what temperature will aluminum have a resistivity that is two times the resistivity of copper at room temperature? The answer is 72.74 degrees Celsius but I am not sure how to get to that answer. Assume room temp is 20 degrees celsius.
(a) A 34.7-m length of copper wire at 20.0°C has a radius of 0.29 mm. If...
(a) A 34.7-m length of copper wire at 20.0°C has a radius of 0.29 mm. If a potential difference of 7.0 V is applied across the length of the wire, determine the current in the wire. (Use the values in the following table.) Resistivities and Temperature Coefficients of Resistivity for Various Materials (at 20°C) Material Resistivity (Ω · m) Temperature Coefficient of Resistivity [(°C)−1] Silver 1.59 ✕ 10−8 3.8 ✕ 10−3 Copper 1.7 ✕ 10−8 3.9 ✕ 10−3 Gold 2.44...
(a) A 35.1-m length of copper wire at 20.0°C has a radius of 0.31 mm. If...
(a) A 35.1-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of 7.0 V is applied across the length of the wire, determine the current in the wire. (Use the values in the following table.) Resistivities and Temperature Coefficients of Resistivity for Various Materials (at 20°C) Material Resistivity (Ω · m) Temperature Coefficient of Resistivity [(°C)−1] Silver 1.59 ✕ 10−8 3.8 ✕ 10−3 Copper 1.7 ✕ 10−8 3.9 ✕ 10−3 Gold 2.44...
1. If the 0.100 mm diameter tungsten filament in a light bulb is to have a...
1. If the 0.100 mm diameter tungsten filament in a light bulb is to have a resistance of 0.177 Ω at 20.0°C, how long should it be? The resistivity of tungsten at 20.0°C is 5.60  10-8Ω · m. 2. A power transmission line is hung from metal towers with glass insulators having a resistance of 4.95 ✕ 109 Ω. What current (in mA) flows through the insulator if the voltage is 220 kV? (Some high-voltage lines are DC.)
A tungsten wire has a radius of 0.090 mm and is heated from 20.0 to 1350...
A tungsten wire has a radius of 0.090 mm and is heated from 20.0 to 1350 °C. The temperature coefficient of resistivity is α = 4.5 10-3 (C°)−1. When 240 V is applied across the ends of the hot wire, a current of 1.8 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire. ____m
PLEASE SHOW ALL WORK! 00-gauge copper wire has a diameter of 9.266 mm and a resistivity...
PLEASE SHOW ALL WORK! 00-gauge copper wire has a diameter of 9.266 mm and a resistivity of 1.68 × 10−8 Ω · m at 20.0◦C. The wire is 1.00m in length. a) What is the power loss in the wire if the wire carries 110. A? b) The temperature coefficient of resistivity for copper is α = 3.90 × 10−3 ◦C−1. If the copper is at 40.0◦C, what is its new resistivity? c) If it still has the same power...
The vapor pressure of a liquid doubles when the temperature is raised from 91° C to...
The vapor pressure of a liquid doubles when the temperature is raised from 91° C to 99° C. At what temperature will the vapor pressure be four times the value at 91° C?. Answer should be in Celsius.
A light bulb has a diameter of 2.17x10-3m and an unknown length. a.) If the light...
A light bulb has a diameter of 2.17x10-3m and an unknown length. a.) If the light bulb has a resistance of 20.5 Ω at room temperature, (which is 20.0 °C) then what is the length of the filament? ______m b.) At room temperature (20.0 °C) there is a current of 5.85A that flows through the filament when a voltage is applied to it. What is the power output of the filament at room temperature?   _____ W. c) If the voltage...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT