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A particle of mass 0.5 kg is moving down a rough slope (with coefficient of friction = 0.2) inclined at 30 degrees to the horizontal. Find the acceleration of the particle. Use g = 9.8 ms^-2.

Resolving perpendicular to the plane: R - mg cos30 = 0. Therefore, R = m g cos30, where R is the reaction force perpendicular to the plane. Res...

MB
Answered by Matthew B. Maths tutor
5328 Views

Evaluate f'(1) for the function f(x) = (x^2 + 2)^5

First, we must differentiate the function. To do this we must let the contents of the bracket be equal to 'u'. We now can produce two equations, one by subbing in 'u' into the function f(x) to give us u^5...

TU
Answered by Tahrim U. Maths tutor
2820 Views

Describe how vaccination can lead to protection against bacterial meningitis (6 marks)

Vaccines provide a dead/inactive form of bacterial meningitis. Phagocytes such as macrophages recognise the antigens of bacterial meningitis as foreign so engulf the pathogen forming a phagosome. The lyso...

JH
Answered by James H. Biology tutor
9740 Views

Explain the process of skeletal muscle contraction and why glucose is required for this process.

In skeletal muscle there exists a thick filament, myosin, and a thin filament, actin. For contraction both of these filaments need to interact causing a power stroke and muscle contraction. At rest, the m...

SM
Answered by Shabri M. Biology tutor
3293 Views

Describe two features of the October Manifesto (6 marks) (IGCSE)

One feature of the October Manifesto was that it enabled the Tsar to survive the revolution of 1905. This is because Nicholas II showed that he was prepared to make concessions by introducing reforms whic...

MG
Answered by Mary G. History tutor
7400 Views

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