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Radioactive Decay

Radioactive isotopes of elements have unstable arrangement of neutrons and protons in their nuclei. To become more stable, they emit alpha or beta particles. But this changes the number of protons and neutrons in the nucleus resulting in the formation … Continue reading

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Nuclear Radiation

Discovery: Henry Becquerel discovered radioactivity accidentally in 1896.   Nuclear radiation: Some elements contain atoms with unstable nuclei. With time, the unstable nucleus disintegrates. While doing so, it shoots out a tiny particle and sometimes wave energy as well. Since … Continue reading

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Sketching linear graphs

Sketching linear graphs using the gradient and y-intercept: In linear equations in the form y = mx + b m is the gradient b is the y intercept Sketching linear graphs that pass through the origin: Graphs that pass through … Continue reading

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Gradient

Gradient: Gradient is the measure of a line’s steepness (slope). The gradient of a line describes the change in y values as the x value increases by 1. The size of the gradient tells us how steep a line is. … Continue reading

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Linear Equations

There is a Linear relationship between two variables if a uniform change in the independent variable produces a uniform change in the dependent variable. A linear relationship produces a linear graph (straight line). A linear graph is represented by the … Continue reading

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