Determine at what temperature aluminum will have the same resistivity as tungsten does at 24?C.

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genius_generous answered 1 month ago

The resistivity of tungsten increases approximately linearly with temperature from 56.0 nΩ · m at 293...

The resistivity of tungsten increases approximately linearly with temperature from 56.0 nΩ · m at 293 K to 1.10 µΩ · m at 3500 K. A lightbulb is powered by a 120-V dc power supply. Under those operating conditions the temperature of the tungsten filament is 2500 K, the length of the filament is equal to 5.30 cm, and the power delivered to the filament is 36.4 W. Estimate the following. (a) the resistance of the filament Ω (b) the...

You have 520 g of aluminum at an initial temperature of 350 °C. (Aluminum has a...

You have 520 g of aluminum at an initial temperature of 350 °C. (Aluminum has a specific heat capacity c = 0.214 cal/(g°C).) You place it into a beaker filled with 860 g of water at an initial temperature of 18 °C. (Water has a specific heat capacity c = 1.0 cal/(g°C).) Assume that no phase changes or chemical reactions occur during this time. Calculate the final temperature of the aluminum~and water. Calculate the amount of heat that enters the...

In a machine that temperature changes from 20 ∘C up to 120 ∘C a tungsten wire...

In a machine that temperature changes from 20 ∘C up to 120 ∘C a tungsten wire filament 13.0 cm long with a diameter of 1.20 mm will be used. The wire will carry 11.0 A at all temperatures ( Resistivity of tungsten at 20 ∘C is 5.25×10^−8Ω⋅m , the temperature coefficient of resistivity at 20 ∘C is 0.0045 ∘C^−1 ). A-)Calculate the maximum electric field in this filament? B-)Calculate the resistance of the filament with that field? C-)Calculate the maximum potential drop...

In a machine that temperature changes from 20 ∘C∘C up to 120 ∘C∘C a tungsten wire...

In a machine that temperature changes from 20 ∘C∘C up to 120 ∘C∘C a tungsten wire filament 15.0 cmcm long with a diameter of 1.30 mmmm will be used. The wire will carry 14.0 AA at all temperatures ( Resistivity of tungsten at 20 ∘C∘C is 5.25×10−8Ω⋅m5.25×10−8Ω⋅m , the temperature coefficient of resistivity at 20 ∘C∘C is 0.0045 ∘C−1∘C−1 ) Calculate the maximum electric field in this filament? Calculate the resistance of the filament with that field? Calculate the maximum potential drop over the...

In the experiment: To determine the resistivity of a semiconductor using Four probe method. What does...

In the experiment: To determine the resistivity of a semiconductor using Four probe method. What does the floating potential mean? Like what's the difference between potential and floating potential? Also what does the correction factor in this experiment signify? Like why do we need the correction factor in this experiment? The value of the correction factor in this experiment is G7 which is 2ln2.

Consider the blackbody radiation emitted at a temperature of 500◦C. (i) Explain why a tungsten wire...

Consider the blackbody radiation emitted at a temperature of 500◦C. (i) Explain why a tungsten wire in an old-fashioned light-bulb starts to glow as it becomes sufficiently hot. (ii) Calculate the percentage pressure increase of the blackbody radiation if the temperature is raised to 550◦C. An electron escapes the hot tungsten wire and is subsequently trapped in a one-dimensional square quantum well. The potential outside the well can be approximated as infinite. (iii) Sketch the probability distribution of the electron...

An aluminum plate with a thickness of 2L=0.22m is initially at a temperature of To=250°C. The...

An aluminum plate with a thickness of 2L=0.22m is initially at a temperature of To=250°C. The plate is suddenly brought into contact with a fluid at a temperature of T∞=50°C, where the convection heat transfer coefficient is h=500 W/ m2K. Determine a. the mid-plane temperature at t=300 seconds. b. the total heat transfer from the plate to the fluid in 300 seconds if the surface area of one side of the plate is 1 m2 .

Given that the initial rate constant is 0.0190s−1 at an initial temperature of 24 ∘C , what...

Given that the initial rate constant is 0.0190s−1 at an initial temperature of 24 ∘C , what would the rate constant be at a temperature of 100. ∘C for the same reaction described in Part A? (Part A The activation energy of a certain reaction is 47.0 kJ/mol . At 24 ∘C , the rate constant is 0.0190s−1. At what temperature in degrees Celsius would this reaction go twice as fast? T2 = 35C)

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At what temperature will a molecule of UF6 have the same average speed as a molecule of hydrogen at 37 degrees celsius?

12a. A 0.260-kg piece of aluminum that has a temperature of -159 °C is added to...

12a. A 0.260-kg piece of aluminum that has a temperature of -159 °C is added to 1.0 kg of water that has a temperature of 2.7 °C. At equilibrium the temperature is 0 °C. Ignoring the container and assuming that the heat exchanged with the surroundings is negligible, determine the mass of water that has been frozen into ice. Number Units b. If the price of electrical energy is $0.09 per kilowatt·hour, what is the cost of using electrical energy...

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