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PhD Engineering in Lancaster.

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ASKED BY MELINA

MATHS π―#### A right angled triangle with one side 5.7 cm and the other 6.3 cm what is x (the short side, base)?

For this question you need to use Pythagoras' Theorem: the square of the hypotenuse (the longest side, which is opposite the right angle) is equal t...

ASKED BY HAMZA

SCIENCE π¬#### Chemistry: My question is how does a greater concentration speed up particles and cause collisions? 2nd question: How does a catalyst impact any results taken?

Simply increasing concentration does not increase the speed of the particles, it increases the rate of reaction. The greater concentration of partic...

ASKED BY OMAR

MATHS π―#### Helen draws a random circle. she then measure it diameter and circumference. should get a circumference, C, of 405mm correct to 3 significant figures she get a diameter, D, of 130mm correct 2 significant figures. Helen want to find the value of Pi using a formula Pi =D/C calculate the lower bound and upper bound for Helen's value of pi give your answer correct to 3 decimal place?

First, you want to find the lower and upper bounds of the circumference C and diameter D. C = 405mm to 3sf so the bounds are: 404.5 to 405.5 We find...

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