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What is polymorphism in regards to Object Oriented Programming (OOP)? Provide an example.

The word ‘polymorphism’ literally means ‘a state of having many shapes’ or ‘the capacity to take on different forms’. When applied to object oriented programming languages like Java, it describes a langua...

Answered by Paras R. • Computing tutor

1439 Views

A particle of mass 5kg is held at rests on a slope inclined at 30 degrees to the horizontal. The coefficient of friction for the slope is 0.7, determine whether the particle will move when released.

Frictional force acting:F_Max= uR = 0.7 x 5 x 9.81 x cos(30) F_Max = 29.7NWeight acting down the slope:F = 5 x 9.81 x sin(30)F = 24.5NFric...

Answered by Myles I. • Maths tutor

4813 Views

How does a metal in powder form react faster with acid than the same metal in strips/blocks?

This is due to the metal in the powder form having a larger surface area. There are 4 ways to increase the rate of reaction. Increasing the concentration of the reactants, increasing the temperature, addi...

Answered by Amy N. • Chemistry tutor

9242 Views

How does Dickens present the theme of social class in the novel 'Great Expectations'

Pip spends his youth living on the Kent marshes which immediately presents his childhood in a lower class as being extremely isolated with a lack of opportunity. In the dialect at the time, it is likely t...

Answered by Erin R. • English tutor

4561 Views

Explain how the human body might protect itself from microorganisms.

There are two different types of microorganism - bacteria and viruses. The human body is covered in bacteria, the majority of which is good bacteria and they won't cause any harm. The rest are pathogens w...

Answered by Petya I. • Biology tutor

2266 Views