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What is a Derivative?

A derivative is the result of an operation called differentiation. If we differentiate something, a function, the result tells us how much the function changes with respect to a chosen variable. For instance...
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Answered by Danny W. • Maths tutor
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What is the modulus of 3+4i?

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Use the kinetic theory of gases to explain why the pressure inside a container increases when the temperature of the air inside it rises. Assume that the volume of the container remains constant.

The kinetic theory of gases states that a gas consists of many molecules in constant motion. A rise in temperature increases the mean speed of these molecules, and therefore their momentum (=mv). The increas...
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Answered by Epen T. • Physics tutor
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What is an enzyme?

An enzyme is a biological catalyst. It is a protein with an active site that binds to a substrate to accelerate a chemical reaction.
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Answered by Epen T. • Biology tutor
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Sollte es in den Schulen ein Handyverbot geben?

Auf einer Seite sind Handys ein nutzliches Werkzeug, weil sie als Wörterbuch oder Taschenrechner benutzt werden können, um Schülern zu helfen, weiter zu lernen, Es würde auch bedeuten, dass die Schulen sovie...
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Answered by Bernadette R. • German tutor
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