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Consider the closed curve between 0 <= theta < 2pi given by r(theta) = 6 + alpha sin theta, where alpha is some real constant strictly between 0 and 6. The area in this closed curve is 97pi/2. Calculate the value of alpha.

Student uses the definition of area [A = 1/2 integral r(theta)^2 d theta], and proceeds using standard integration techniques to give a quadratic solvable for alpha. [alpha^2 = 25] Thus, alpha = 5.

GC
Answered by Graham C. Maths tutor
3288 Views

Assess the contribution of social action theories to our understanding of society

Symbolic interactionism forms the basis of social action theories, founded by the sociologist Mead. Mead saw society as built up by interactions between people that take place on the basis of meanings hel...

CS
Answered by Caitlin S. Sociology tutor
8108 Views

Outline and evaluate the biological approach in psychology. (8 marks)

The biological approach in psychology assumes that, to be able to fully understand human behaviour, we must look at biological structures and processes in the body, for example our genes and neurotransmit...

AF
Answered by Aiesha F. Psychology tutor
55164 Views

Name and describe both of Kirchhoff's laws.

The Loop rule, this states that the sum of the potentials in a loop must be equal to 0.The Junction rule, this states that the sum of the current entering the junction must be equal to the sum of the curr...

BB
Answered by Boris B. Physics tutor
1699 Views

Outline 3 reasons why girls tend to achieve more highly than boys in education (6 MARKS)

Girls may achieve better due to having more positive role models in schools, 86% of teachers in primary schools are female, so from a young age, girls see that they can achieve highly, subsequently giving...

CK
Answered by Chloe K. Sociology tutor
47101 Views

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