What is the wires resistance when it is hot

Assignment Help Physics
Reference no: EM13514106

The heating element of a simple heater consists of a 1.9-m-long, 0.65-mm-diameter nichrome wire. When plugged into a 120 V outlet, the heater draws 7.0 A of current when hot.

(part A) What is the wire's resistance when it is hot? (in ohms)

(part B) Use your answer to part A to calculate the resistivity of nichrome in this situation. (in ohms x m)

Reference no: EM13514106

Questions Cloud

Find the magnitude of the gravitational force on the drop : A spherical water drop 3.7 ?m in diameter is suspended in calm air due to a downward-directed atmospheric electric field of magnitude E = 12100 N/C. find the magnitude of the gravitational force on the drop
How to calculate the size of a hydrogen atom : Calculate the 'size' of a hydrogen atom in its ground state according to this definition. Go on to explore how the 'size' varies as the definition is changed to other precentages, and plot your conclusion.
What is the angle of the third order inside the water casing : a diffraction grating 1.5 mm wide produces the fifth order pie/4 with light wavelength 650nm on the screen 80 mm away. What is the angle of the third order inside the water casing
Compute concentrations of hydroxide and hydronium ions : Calculate the concentrations of hydroxide and hydronium ions in a solution prepared by dissolving 0.308 g of solid NaOH in enough water to make 225 mL of solution. Kw = 1.0E-14. Hydroxide ion concentration
What is the wires resistance when it is hot : The heating element of a simple heater consists of a 1.9-m-long, 0.65-mm-diameter nichrome wire. What is the wire's resistance when it is hot
Explain the cell potential be higher with the addition : Why would the cell potential be higher with the addition of 6 M Na2S solution to .001 M of CuSO4 (compared to 6 M NH addition to .001 M CuSO4)
Explain positronium consists of an electron and a positron : Positronium consists of an electron and a positron (same mass, opposite charge) orbiting round their common centre of mass. The broad feature of the spectrum are therefore expected to be hydrogen-like, the differences arising largely from the mass..
Define how many milliliters of nh4cl must be added to nh3 : How many milliliters of 3.4 M NH4Cl must be added to 250 mL of 0.23 M NH3 to obtain a buffer solution having pH=9.40
What is the minimum value of youngs modulus allowed : A cable is 50.0 m long and has a diameter of 2.50cm. A force of 10,000 N is applied to the end of the cable. what is the minimum value of young's modulus allowed

Reviews

Write a Review

Physics Questions & Answers

  Evaluate the mechanical energy of the system

A mass-spring system oscillates with an amplitude of 5.60 cm. If the spring constant is 228 N/m and the mass is 454 g, Determine the mechanical energy of the system

  What is the youngs modulus of the wire

A rock of mass 0.340 kg is spun horizontally at the end of a wire that is 1.00 m long and has a diameter of 1.00 mm. what is the Young's modulus of the wire

  How much kinetic energy is created during skaters maneuver

Two figure skaters, one weighing 625N and the other 700N , How much kinetic energy is created during the skaters maneuver

  Determine the final temperature of the soda and watermelon

An ice chest at a beach party contains 15 cans of soda at 3 ° C. Each can of soda has a mass of 0.38 kg, determine the final temperature T of the soda and watermelon

  What horizontal pushing force is required

A 59.3-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.714, What horizontal pushing force is required to just start the crate moving

  What is the equilibrium temperature of the mixture

A 2.31?102g piece of copper at a temperature of 401.K and a 1.07?102g piece of aluminum at a temperature of 2.17?102K, What is the equilibrium temperature of the mixture

  How many higher orders of maxima can be seen

A grating has 530 rulings/mm and is 5.4 mm wide.  How many higher orders of maxima can be seen

  What is the total time the bullet is in contact with board

An indestructible bullet, 2cm long, is fired straight through a board which is 10 cm thick. What is the total time the bullet is in contact with the board

  Determine the number of turns in the solenoid

A certain superconducting magnet in the form of a solenoid of length 1.20 m can generate a magnetic field of 11.0 T in its core when its coils carry a current of 145 A. Find the number of turns in the solenoid

  What is its activity after it has been on the shelf

A drug tagged with 9943Tc (half-life = 6.05 h) is prepared for a patient. what is its activity (R) after it has been on the shelf for 2.0 h

  The coefficients of friction between the box and roof

A 15.00 block is attached to a very light horizontal spring of force constant 450 and is resting on a smooth horizontal table. Suddenly it is struck by a 3 stone travelling horizontally at 8 to the right, whereupon the stone rebounds at 2.00 horizont..

  How far from the table will the block hit the floor

A block of mass m =2.00kg is released from rest at h=0.300 m from the surface of a table at the top of a theta=50.0 degree incline as shown below. How far from the table will the block hit the floor

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd