An electric Iron rated at 2600 W contains a steel plate, heated to a working temperature of 215°C. Room temp=18°C. Deduce whether the plate could reach its working temperature in less than 1 minute. Mass (steel plate)=890g & C (steel)=450J/kg/K

We are given the power of the iron, 2600W and we know that Power = Energy/Time. We are also given the specific heat capacity of steel (C) which gives us a clue that we should use Q = mcT(delta) (meaning, Energy = massspecific heat capacitychange in temp).Therefore, to see what the heat energy transferred is, we do Q = 0.89kg * 450 * (215-18) = 78898.5 JThen, to see the time taken for this heat energy to be transferred, we do T = E/P = 78898.5 / 2600 = 30.3sTherefore, the plate reaches its working temperature in 30.3s, which is less than 1 minute.

Answered by Oni B. Physics tutor

3476 Views

See similar Physics GCSE tutors

Related Physics GCSE answers

All answers ▸

A rollercoaster carriage of mass 100kg has 45kJ of Kinetic Energy at the lowest point of its ride. Ignoring air resistance and friction between the wheels and the tracks, what is the maximum height above this point it could reach? [Take g as 10m/s/s)


Describe the purpose of the moderator in a nuclear fission reactor.


Why would the National Grid limit the amount of fossil fuels we combust at peak times of energy demand?


Compare the advantages and disadvantages of the two methods of generating electricity (figure 1 in answer):


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences