Roboguru

Setiap detik di Matahari terjadi perubahan kg materi menjadi radiasi. Apabila laju cahaya dalam vakum adalah cm/s, daya yang dipancarkan oleh Matahari adalah ...

Setiap detik di Matahari terjadi perubahan begin mathsize 14px style 4 cross times 10 to the power of 9 end style kg materi menjadi radiasi. Apabila laju cahaya dalam vakum adalah begin mathsize 14px style 3 cross times 10 to the power of 10 end style cm/s, daya yang dipancarkan oleh Matahari adalah ...

  1. begin mathsize 14px style 3 comma 6 cross times 10 to the power of 30 end style watt

  2. begin mathsize 14px style 4 comma 8 cross times 10 to the power of 27 end style watt

  3. begin mathsize 14px style 3 comma 6 cross times 10 to the power of 26 end style watt

  4. begin mathsize 14px style 1 comma 2 cross times 10 to the power of 18 end style watt

  5. begin mathsize 14px style 5 comma 0 cross times 10 to the power of 10 end style watt

Jawaban:

begin mathsize 14px style increment m equals 4 cross times 10 to the power of 9 space end exponent kg c equals 3 cross times 10 to the power of 10 space cm divided by straight s equals 3 cross times 10 to the power of 8 space straight m divided by straight s straight P equals fraction numerator increment straight E over denominator increment straight t end fraction equals fraction numerator increment mc squared over denominator 1 end fraction space space space space space space space space space space space space space space space space equals fraction numerator 4 cross times 10 to the power of 9 space end exponent open parentheses 3 cross times 10 to the power of 8 close parentheses squared over denominator 1 end fraction space space space space space space space space space space space space space space space space equals 4 cross times 10 to the power of 9 space end exponent cross times 9 cross times 10 to the power of 16 space space space space space space space space space space space space space space space space equals 36 cross times 10 to the power of 25 space end exponent space space space space space space space space space space space space space space space space equals 3 comma 6 cross times 10 to the power of 26 space end exponent  end style

Jadi, jawaban yang  benar adalah C.

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