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If 10 N is required to move an object 2m, what is the work done?

Work done (joules) = Force (newtons) x distance moved in direction of the force (metres) Work done = 10 x 2 = 20J
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Answered by Katrina T. • Physics tutor
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What conditions increase the likelihood of fossilisation?

Cold and low oxygen - minimises likelihood of organisms decaying
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Answered by Katrina T. • Biology tutor
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2.4 g of magnesium reacts with 1.6 g of oxygen. What is the empirical formula of the oxide formed?

Ar of Magnesium = 24; Ar of Oxygen = 16 number of moles = mass divided by Ar number of moles of Mg = 2.4/24 = 0.1 number of moles of Oxgen = 1.6/16 = 0.1 ratio of Mg to O = 0.1:0.1 = 1:1 So oxide produced is...
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Answered by Katrina T. • Chemistry tutor
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Explain the difference in the speed of conduction of an action potential along the length of a myelinated neurone and a non-myelinated neurone.

First, we need to explain how the action potential is conducted along the length of the axon. An action potential is transferred along an axon by the movement of Na + and K + ions into and out of the cell. T...
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Answered by Catherine H. • Biology tutor
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How do you analyse a source?

Analysing a source is a challenge, particularly when you'll probably be doing this analysing in the stressed environment you'll get in an exam. Though by using the same kind of formula to apply to any source...
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Answered by Luke M. • History tutor
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