Institution of Fire Engineering Tuition

2020 INTAKE:
PHYSICS TUITION
GRADE 9 (FORM 3)
SC
HSC (THEORY AND PRACTICAL)

Address: Morcellement St Andre
Phone: 59799799
Name: Mr Ramdewor

2019 intake:
Grade 9 (form 3)
SC and
Lower 6 and Upper 6 PRACTICALS ONLY (mechanical and electrical)

Morcellement st andre.
59799799

HSC: ULTRASOUND

Explain the principles of the generation of ultrasonic waves using piezo-electric transducer.
1. A quartz is used to produce an ultrasound.
2. Opposite faces act as electrodes.
3. Centres of (+) and (–) charge are not coincident.
4. A potential difference across crystal causes crystal to change shape.
5. An alternating voltage is applied across the crystal.
6. It causes crystal to oscillate at resonant frequency.

HSC: SENSING DEVICE

HSC: Chapter 16: Communication
Types of communication channels.
(excluding geostationary satellite and polar orbit satellite)

November 2017 grade threshold tables

http://www.cambridgeinternational.org/images/459105-physics-5054-november-2017.pdf

New set: Pendulum. Pulley. Ping pong ball. Marbles and railway track. Slotted mass. Plasticine. Tortional oscillation.
A variety of practical to improve your skills.

HSC
Explain using the principle of superposition formation of stationary wave:
1) Incident wave reflects on a hard surface.
2) Incident and reflected waves travelling in opposite direction overlap.
3) Both waves have same frequency.
4) The resultant displacement is the sum of displacements of each wave.
5) Nodes and antinodes are produced.

Explain why an e.m.f. is induced. [3 marks]

The coil is between magnetic field of N and S poles. The coil rotates and cuts magnetic field lines. The magnetic flux linkage changes continuously.

So beautiful to watch. Give it a try ;)

earth :: a global map of wind, weather, and ocean conditions See current wind, weather, ocean, and pollution conditions, as forecast by supercomputers, on an interactive animated map. Updated every three hours.

https://earth.nullschool.net/ /wind/isobaric/850hPa/overlay=wind_power_density/orthographic=65.36,-18.37,1242