Skip to content

Help Zone

Student Question

Français
2
Back
avatarUnusualCrocodile8319
Secondary IV • 1yr.

Hi, I can’t seem to understand how I can find time with the EE formula. How is this possible and what are the steps? (By the way, it’s not an exam don’t worry I’m not cheating)


T

image.jpg

Ce contenu est protégé par le droit d'auteur. Toute reproduction à l'extérieur des forums Alloprof est interdite et pourra être considérée comme une violation du droit d'auteur.

i-icon

hank you!

Physics
Provide an answer
avatar
avatar

{t c="richEditor.description.title"} {t c="richEditor.description.paragraphMenu"} {t c="richEditor.description.inlineMenu"} {t c="richEditor.description.embed"}

Submit my answerSubmit my answer

Explanations (1)

  • Explanation from Alloprof

    Explanation from Alloprof

    This Explanation was submitted by a member of the Alloprof team.

    Options
      avatarKylan Tteacher check
      Team Alloprof • 1yr. edited September 2022

      Hi UnusualCrocodile,

      Thanks for your question!

      Before using the EE formula, you must find the time it takes to reach 1.0 MJ with a power of 1700W.

      Remember that 1 W equals to 1 J per second. Thus, 1700 W equals to 1700 J/s.

      1.0 MJ equals 1,000,000 J. If you divide this number by 1700 J/s, you will find the time it takes to produce 1.0 MJ.

      Therefore, you need to find the real consumption of energy of the fryer with an energy efficiency of 90% (by using the EE formula). Then, you will be able to find the answer using the method I described.

      Don't hesitate to reach out if you have any question!

      Kylan

    Québec RioTinto Desjardins Pathy TROTTIER OTHER
    Ask a question