Top answers

How do you measure the gradient of a straight line joining two points?

There is a simple method for working out the gradient of a straight line joining any two points, for which the X and Y coordinates are known. For instance, if our first point is: A(X 1 ,Y 1 ), and our second...
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Answered by Alex T. • Maths tutor
12898 Views

A patient has the cold, explain to them why antibiotics can only be used to treat certain types of infection and the issues that develop when antibiotics are used too much.

Infections can be caused by bacteria, viruses or fungi. Antibiotics are a class of drug designed to kill or stop the growth of bacteria. They cannot be used to treat infections caused by viruses, such as the...
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Answered by Catherine S. • Biology tutor
3672 Views

What is terminal velocity? (falling bodies)

When an object falls down through a fluid (e.g. water, oil, air..) there are usually two forces acting on it. They are the weight force acting downwards and the drag force acting upwards. The weight force co...
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Answered by George F. • Physics tutor
6849 Views

What is the result of this binary addition: 0110 + 0101 ?

the answer is 1011.
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Answered by Sofia A. • Computing tutor
20838 Views

How do meanders and ox-bow lakes form?

In the lower course of the river, meanders (bends in the river) form when water is moving faster on one side of the channel than the other. The greater energy of the faster moving water causes lateral (horiz...
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Answered by Isabel S. • Geography tutor
16519 Views