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Nataliya [291]
2 years ago
9

A mobile phone is 35% efficient. Over half an hour 11 kJ of energy is transferred to the phone.

Physics
1 answer:
kramer2 years ago
6 0
<h3><u>A</u><u>n</u><u>s</u><u>w</u><u>e</u><u>r</u><u>:</u><u>-</u></h3>

  • Energy Transferre=11KJ
  • Efficiency=35%
<h3>☆Usefully transferred energy:-</h3>

\\ \sf\longmapsto 35\%\:of 11

\\ \sf\longmapsto 35\%\times 11

\\ \sf\longmapsto \dfrac{35}{100}\times 11

\\ \sf\longmapsto \dfrac{385}{100}

\\ \sf\longmapsto 3.85KJ

\\ \sf\longmapsto 3850J

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