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describe the structure of the cardiovascular system, considering causes, resulting outcomes and treatment of coronary heart disease (CHD)

describe and visualise heart and CVS structure to begin to understand the underpinning principles of the heart, arteries and veins. build upon these principles with regard to coronary heart disease and th...

Answered by Raffaele M. • Biology tutor

2037 Views

In the following passage (Aeneid 4.10-12) how does Vergil highlight Dido's admiration through her speech? Make two points, each referring to the Latin. (4)

In this passage, Vergil highlights Dido's admiration of Aeneas through her repeated questions & exclamations: 'Quis novus... quem sese ore ... quam forte' 'Who is this new man... with what bearing... ...

Answered by Charlotte F. • Latin tutor

1421 Views

A student has a mass of 80kg. How much would the student weigh on the surface of the Moon?

The Moon has a mass, M_M = 7.35 x 10²²kgThe Moon has a radius, R_M = 1.74 x 10m
We want to determine the gravitational constant for the Moon's surface to then calculat...

Answered by Guy B. • Physics tutor

2278 Views

Butan-2-ol cannot be directly converted to 1,2-dibromobutane. The conversion can be carried out in two stages by first converting butan-2-ol into X, which is then reacted with bromine.(continued in answers)

butan-2-ol --?→ X --Br₂→ 1,2-dibromobutane(a) State the name and draw the structural formula of X(b) State an equation and the conditions needed for the conversion of butan-2-ol into X.(c) Desc...

Answered by Kiril T. • Chemistry tutor

5922 Views

Electrons moving in a beam have the same de Broglie wavelength as protons in a separate beam moving at a speed of 2.8 × 10^4 m/s . What is the speed of the electrons?

de Broglie wavelength formula:
λ = h/mv,
whereλ = wavelength,h = Planck's Constant = 6.626 x 10^-34Js,m = mass of object,v = object's velocity,
Mass of proton m_p = 1.6...

Answered by Haider A. • Physics tutor

9219 Views