Top answers

Explain the processes that lead to the contraction of a single muscle

A nervous impulse travels to the neuromuscular junction and causes the release of acetylcholine into the synaptic cleft. Depolarisation of the motor end plate spreads through the muscle via transverse tubule...
PB
Answered by Prashan B. • Biology tutor
3081 Views

1. (a) Express 7cosx - 24sin x in the form R cos (x + a), (b) hence what is the minimum value of this equation

(a) Rcos (x+a) = Rcosxcosa - Rsinxsina 7cosx - 24sinx = Rcosxcosa - Rsinxsina Rcosa = 7, Rsina = 24 Tan a = 24/7 a = 1.287 (3 S.F.) R 2 = 24 2 + 7 2 R = 25 Therefore 25cos(x + 1.287) (b) minimum value = -1 *...
PB
Answered by Prashan B. • Maths tutor
15057 Views

Analyse Gatsby’s attitude to Daisy in aiming to achieve his own version of the American Dream. Refer to the extract as a starting point.

Example paragraph: The extract initially describes Baldwin’s departure from a building, and the particular language choices aid us in relating the text to Gatsby’s intense business lifestyle and how this aff...
CF
Answered by Charlotte F. • English tutor
2517 Views

Literature often reflects destruction with little room for redemption. Compare and contrast two of the texts you have studied in light of this comment.

Ian McEwan and Tennessee Williams weave the theme destruction into the novels ‘Atonement’ and ‘A Streetcar Named Desire’ by portraying the influence of class and wealth and the injustice it causes. The ident...
PB
11155 Views

Find the normal to the curve y = x^2 at x = 5.

Differentiate the original equation (y = x^2) to find the gradient (m) of the line which is a tangent to the curve. Dy/dx = 2x Therefore m = 2 Calculate the negative reciprocal (m2) which will give the gradi...
AS
Answered by Aphisha S. • Maths tutor
4373 Views