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what is the total resistance of 2 resistors each with resistance 2 ohms in parallel?

1/R t = 1/R 1 + 1/R 2 The equation for resistors in parrallel. If R 1 and R 2 are both 2 ohms then 1/R t = 1/2 +1/2 = 1 so R t = 1 ohm. Note: Don't forget the units at the end.
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Answered by Hermione W. • Physics tutor
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Solve: 3x + 4 = x + 12

In this algebraic problem, we are faced with two unknowns (x's) on both sides of the equation. Remember that what we do to one side, we must also do to the other side. So to tackle this, we will first focus ...
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Answered by Tristan F. • Maths tutor
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What is the significance of the colour 'red' in Steinbeck's 'Of Mice and Men'?

The colour red was used to symbolise Curley's wife. It is described that her nails, dress and other physical characteristics as being red. This portrays her character as perhaps being quite promiscuous and o...
PB
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What causes a heart attack (also known as mycocardial infarction) and how are they treated?

During an individuals life arteries become covered in fatty plaque deposits. This causes the the inside (lumen) of the arteries to narrow. This narrowing increases the likelyhood of blockage of platelets and...
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Answered by Saskia C. • Biology tutor
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One of the teachers at a school is chosen at random. The probability that this teacher is female is 3/5 There are 36 male teachers at the school. Work out the total number of teachers at the school.

We are told that the probability that a randomly chosen teacher is female is 3/5, or 60%. This means that the overall proportion of female teachers at this school is also 3/5, or 60%. In turn, this means tha...
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Answered by Aleksandar G. • Maths tutor
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