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A ball, dropped vertically, falls d metres in t seconds. d is proportional to the square of t. The ball drops 45 metres in the first 3 seconds. How far does the ball drop in the next 7 seconds?

First we form equations from the information given in the question. The first equation we can form is that d is directly proportional to the square of t. This means that d = kt 2 ,where k is a constant of pr...
Answered by • Maths tutor
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What is the function of a cadence in western music and what are the different types?

The function of the musical cadence in western music is to either create tension at the end of a musical phrase to lead into another segment of music, or to definitively conclude a musical phrase. This is co...
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Answered by David B. • Music tutor
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What do we mean by the phrase "être verbs" when using the perfect tense in French?

When using the perfect tense in French, there are three components to a phrase. The first is the pronoun (I, you, he/she, we, they). The second is the auxiliary verb, and the third is the past participle. Wh...
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Answered by Kathryn B. • French tutor
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How to write a redox equation from half equations

There are three crucial steps in balancing redox half equations, which, when mastered, allow any two half equations, no matter how to complex, to be easily balanced. First, we balance the electrons, by deter...
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Answered by Jess H. • Chemistry tutor
6030 Views

Give reasons for the increase in ionisation energy across a period in the table of elements.

Marks awarded for mention of outer most shells of electrons, shielding effects along side distance from nucleus of respective atoms as well as increased positive charge due to increased number of protons pre...
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Answered by Jack S. • Chemistry tutor
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