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A car travels 100 metres in 20 seconds. i) What is the cars speed? ii) How far would the car travel in 1 minute 40 seconds?

To answer this question, we will need the following equation: SPEED = DISTANCE/TIME (A multiplication and division triangle will be shown)i) The speed of the car is calculated by doing 100 metres/ 20 seconds...
DH
Answered by Delwar H. • Physics tutor
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Solve this simultaneous equation: 3x + y = 10, x + y = 4

x = 3
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Answered by Hibah M. • Maths tutor
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Solve this simultaneous equation for x: 3x + y = 10, x + y = 4

x = 3
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Answered by Hibah M. • Maths tutor
4088 Views

Why is the boiling point of water significantly greater than that of other group 6 (16) hydrides?

Water exhibits hydrogen bonding between neighbouring molecules, where other group 6 hydrides are held together by much weaker (ca. 10 x) Van Der Waal's forces of attraction. Waters hydrogen bondong ability a...
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Answered by Joe S. • Chemistry tutor
7095 Views

Rationalise the denominator of 1/(4 + sqrt(3))

This denominator is irrational because it contains a surd. To rationalise the denominator we multiply the numerator and denominator by the conjugate of the denominator. In this case, the conjugate of the den...
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Answered by Giles M. • Maths tutor
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