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A boy kicks a ball and it is accelerated uniformly from rest so that after 10 seconds it has achieved a speed of 15m/s. Find the ball's acceleration.

First, clearly set out the information we know: U=0m/s, V=15m/s, T=10s, and identify the value we are wanting to find out: A=? Check that all of these value's units are in meters and seconds only. Recall the...
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Answered by Emma W. • Physics tutor
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How has European material culture since the sixteenth century, been affected by China?

China provided Europe with tea, porcelain, and the design inspiration that gave rise to the cult of Chinoiserie. These Chinese exports had an enormous impact in shaping British culture, and European elite ma...
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Answered by Lorna S. • History tutor
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How do I resolve forces on a slope?

For any question which asks you to consider multiple forces acting on a body, the first thing you should do is draw a clear diagram, with all forces (and in this case angles) labelled.Once this has been done...
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Answered by Dan B. • Physics tutor
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How is insulin secretion controlled?

Beta cells in the pancreas contain potassium and calcium ion channels - potassium ion channels are normally open and calcium channels closed. When glucose concentrations outside of the cell are high the gluc...
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Answered by Bethany F. • Biology tutor
9866 Views

What is an enzyme?

Enzymes are proteins that catalyse the conversion of substrates into products. Similar to other catalysts, enzymes are chemically unchanged during the reaction and they do not change the position of any equi...
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Answered by Bethany F. • Biology tutor
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