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What is half life

What is diffraction and refraction

What is b^6÷√((b^3)^(½))?

Factorise 6x^2+8xw

Describe production of thermal power

Make n subject : ( p / q ) =(( n^ 2 ( ( r / t )^ 3 ) ))/ p

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Differentiate between lepton and neutrino

The population of the country increases exponentially at the rate of X% for every five years from 1960 to 2015.
In 1960, the population was 60 100
2015, the population was 120 150
Find the velue of X.

Describe how the TV screen lights.
Include terms like;
Cathodes
Anodes
Voltages supply
Electric currents
Cathode rays
(Deflections)
Accelerate
Metalic plates
Electrons
Fluorescent screens

Explain thermionic emissions by high voltage