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Find the area of a sector with a radius of 5cm and an angle of 120 degrees?

pi r r

pi 5x5

25pi = 360 degrees 

120/360 x 25pi = 25/3 pi

Teaching Points:

Area of a circle + other formalue for circumfrence 

Degrees of a circle 

Fracti...

AP
Answered by Anish P. Maths tutor
5060 Views

Which of these is a correctly balanced equation for respiration? C6H12O6 + 3O2 → CO2 + 3H2O C6H12O6 + 6O2 → 6CO2+ 6H2O C6H12O6 + 6O2 → 6CO2 + 3H2O

Teaching points:

Go through balancing equations 

Formalae of glucose 

Different types of Respiration - and how to balnce other equations 

Respiration in animals vs plants 

...
AP
Answered by Anish P. Biology tutor
9078 Views

How is the resting membrane potential produced in typical mammalian neurons?

The membrane potential describes the movement of charged ions across a membrane. A positive membrane potential indicates net movement of positive charge into the cell, or net movement of negative charge o...

AT
Answered by Alex T. Biology tutor
10131 Views

i) Write a full balanced equation for (a) the complete combustion of glucose and (b) the incomplete combustion of glucose. ii) Following from part i) suggest a reason (and explain) the difference with the product in reaction (a) and that of reaction (b).

Part I (4 marks) a) C6H12O+ 6O-> 6CO+ 6H2O b) C6H12O+ 3O2 -> 6C...

LG
Answered by Lavan G. Chemistry tutor
10037 Views

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(X1,Y1

AT
Answered by Alex T. Maths tutor
11935 Views

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