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What are formal and informal pronoums and how to know which to choose?

A big difference between french and english are the way some pronoums are used. "You" can be translated in two different ways. You can translate it to "Tu" and "Vous". This is b...
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Answered by Skeena W. • French tutor
2738 Views

Describe the living components of an ecosystem

The living components of an ecosystem consist of flora, fauna and bacteria, also known as biotic factors. Energy travels through the ecosystem through trophic layers. Trophic layer one consists of primary pr...
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Answered by Eloise B. • Geography tutor
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The equation of the line L1 is y = 3x – 2. The equation of the line L2 is 3y – 9x + 5 = 0. Show that these two lines are parallel.

The equation of a straight line is usually given in the form y = mx + c. To prove that two lines are parallel we will need to show that both lines have the same gradient. The gradient of a line is the slope/...
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Answered by Tanya K. • Maths tutor
4933 Views

The focal length of the lens is 10 cm. Calculate the power of the lens. State the unit.

first, convert to metres:10cm = 0.1mlens power = 1/focal lengthpower = 1/0.1 =10units are Dioptres, Dso the power of the lens is 10 D
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Answered by Aleks H. • Physics tutor
4157 Views

The rate of the reaction between magnesium ribbon and hydrochloric acid can be increased by increasing the concentration of the acid. State two other ways of increasing the rate of this reaction

Increase the surface area of the magnesium, for example by using a powder.Increase the temperature of the reaction.Add a catalyst
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Answered by Aleks H. • Chemistry tutor
5252 Views