A1-2: Use of Books and Graph Drawing

Apparatus

Selection of Physics books; 4 or 5 figure log tables; 1 sheet of graph paper.

Procedure

  1. Use the books provided to answer the following:

    1. What is rectilinear motion?

    2. Name 3 ferromagnetic materials (is there a 4th?).

    3. What are the unit prefixes (letter and name) for:

      1012, 109, 106, 103, 102, 102,103, 106, 109, 1012

    4. What are the letters of the Greek alphabet? Give their names.

    5. What does ‘Non-Ohmic conductor’ mean? Give four examples.

    6. What is the velocity of sound in air at 0°C?

    7. 0°C equals how many K, exactly?

    8. What are the main types of experimental error?

    9. a=5±0.005m and b=3.5±0.01m. What is the error in a+b in metres and in %? What is the % error in ab?

    10. Define the metre, the kilogram, the second, the newton, and the joule. Which are base units and why?

  2. Use 4- or 5-figure log tables to calculate the following:

      1. 28.5×137
      2. 0.056×55.62
      3. 0.0335÷0.48
      4. 73500÷0.6885
      5. 5.3224
      6. 36.03
      7. log(0.002)
      8. 101.3
      1. \sin (26°\ 36')
      2. \cos^{-1}(0.391)
      3. \tan (53.552°)
      4. \tan (216°)
      5. \cos (126°)
      1. Convert to radians: \quad 90° \qquad 72° \qquad 200°
      2. Convert to degrees: \quad 1.12\text{rad} \qquad 3 \pi\text{rad} \qquad 3\pi/2\text{rad}
      1. \ln{(7.9)}
      2. e^{1.5}
      3. \ln (0.14)
      4. \ln (40)
      5. e^{15}
      6. e^{0.02}
      1. \sqrt{553}
      2. \sqrt{0.07}
  3. Graphs.

    1. In an Ohm’s Law experiment, where V = IR, the following readings were obtained:

      A1-2.1

      Draw a graph of V against I, and hence find R.

    2. A cell of internal resistance r and emf E supplies current through a resistor R. The equation which applies is:

      r=R \left(\frac{E-V}{V}\right)

      Readings of R and V are obtained, and 1/R is plotted against 1/V. Explain how the gradient and y-intercept can be used to find E and r.