Development of Western science is based on two
great achievements: the invention of the formal
logical system (in Euclidean geometry) by the
Greek philosophers, and the discovery of the
possibility to find out causal relationships by
A motorcyclist goes on a road trip and travels 25
km [E] and then 30 km [W] in a total time of two
hours. Determine the:
a) net displacement, total distance, and final
b) average speed and average velocity.
vector arrows could also
All things are parts of one single system, which is called Nature; the individual life is good when it is in
harmony with Nature. Zeno, 4th century B.C.
Zeno's Challenge to the Ancient Philosophers
Activity 1: Describing and Classifying Motion
Before continuing, be sure to check the Assessment and Evaluation
document in your FirstClass classroom for further instructions.
Global Positioning System: Advantages and Disadvantages
The Global Positioning System is a navigation system. It is a network of 24 satellites
placed into orbit by the U.S. Department of Defense.GPS satellites circle the earth twice a day. It
Light as a Particle Answers
Arrange light beams of the colours red, green and violet in order of increasing
Red has the longest wavelength. Using f = v/, red has the smallest frequency.
Using E = h
11Magnetism and Electromagnetism
If you have two identical iron rods, only one of which is a bar magnet, explain
how you could determine which is which without using any other material or
The iron bar magnet will have N and S poles,
vi) The maximum kinetic energy, Ekmax, of
hotoelectrons is not affected by light brightness (i
ntensity). Consider the equation
, that rel
ates charge on the electron
with energy (this E can be Ek).
An electron gun will accelerate an electron t
EMR Wave Questions
The electric fields are changing in the following diagrams. Draw in the current
and induced magnetic fields:
The magnetic fields are changing in the following diagrams. Draw in the current
The sound pattern is developed by picking up soun
d through a microphone and producing a varying c
urrent which represents sound. The current (or ele
ctron flow) is converted into light which is recorded
on the film.
When the film is projected in the thea