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¶
Use the books provided to answer the following:
What is rectilinear motion?
Name 3 ferromagnetic materials (is there a 4th?).
What are the unit prefixes (letter and name) for:
1012, 109, 106, 103, 102, 10−2,10−3, 10−6, 10−9, 10−12
What are the letters of the Greek alphabet? Give their names.
What does ‘Non-Ohmic conductor’ mean? Give four examples.
What is the velocity of sound in air at 0°C?
0°C equals how many K, exactly?
What are the main types of experimental error?
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?
Define the metre, the kilogram, the second, the newton, and the joule. Which are base units and why?
Use 4- or 5-figure log tables to calculate the following:
- 28.5×137
- 0.056×55.62
- 0.0335÷0.48
- 73500÷0.6885
- 5.3224
- 3√6.03
- log(0.002)
- 101.3
- \sin (26°\ 36')
- \cos^{-1}(0.391)
- \tan (53.552°)
- \tan (216°)
- \cos (126°)
- Convert to radians: \quad 90° \qquad 72° \qquad 200°
- Convert to degrees: \quad 1.12\text{rad} \qquad 3 \pi\text{rad} \qquad 3\pi/2\text{rad}
- \ln{(7.9)}
- e^{1.5}
- \ln (0.14)
- \ln (40)
- e^{15}
- e^{0.02}
- \sqrt{553}
- \sqrt{0.07}
Graphs.
In an Ohm’s Law experiment, where V = IR, the following readings were obtained:
Draw a graph of V against I, and hence find R.
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.