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1.1 Units and quantities

1.1 Units and quantities

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Question 4

The average width of a microprocessor's central processing core is 1.2 cm.

A unit of distance called the core-width (CW\text{CW}CW) is defined such that 1 CW is equal to this average width.

The heat flux density of thermal radiation reaching the edge of the die is 250 mW/μm2250\text{ mW/}\mu\text{m}^2250 mW/μm2.

1 W=1 J/s1\text{ W} = 1\text{ J/s}1 W=1 J/s

The heat flux density, qqq, at a distance r r\,r from the central hot-spot is given by the equation:

q=Γr3 q = \frac{\Gamma}{r^3} q=r3Γ​

where r r\,r is measured in core-widths (CW\text{CW}CW).

State the unit of Γ\GammaΓ.

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Markscheme

1.1 Units and quantities Questions

  1. GCSE
  2. /Physics
  3. /1.1 Units and quantities

18 exam-style questions on Edexcel GCSE Physics 1.1 Units and quantities, covering 1.1.2 Unit prefixes, conversions, significant figures and standard form. Each one has a worked solution and a mark scheme showing where the marks go.

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