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6.5 Uses and dangers of radioactivity

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Question 33

The energy, $E$ , released in nuclear fusion is equivalent to the loss in mass, $m$ , according to the equation:

E = mc^2

where $c\,$ is the speed of light:

\times 10^8 \text{ m/s}

In 1 second, the energy radiated by the massive star Vega is 1.80 × 10²⁸ J.

Calculate the loss in mass of Vega in 1 second.

[2]

Markscheme

6.5 Uses and dangers of radioactivity Questions

GCSE
Physics
6.5 Uses and dangers of radioactivity

94 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity. Each one has a worked solution and a mark scheme showing where the marks go.

6.5 Uses and dangers of radioactivity

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6.5 Uses and dangers of radioactivity

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

Question 33

The energy, $E$ , released in nuclear fusion is equivalent to the loss in mass, $m$ , according to the equation:

E = mc^2

where $c\,$ is the speed of light:

\times 10^8 \text{ m/s}

In 1 second, the energy radiated by the massive star Vega is 1.80 × 10²⁸ J.

Calculate the loss in mass of Vega in 1 second.

[2]

Markscheme

6.5 Uses and dangers of radioactivity Questions

GCSE
Physics
6.5 Uses and dangers of radioactivity

94 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity. Each one has a worked solution and a mark scheme showing where the marks go.