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Derive an expression to show that for satellites in a circular orbit T² ∝ r ³ where T is the period of orbit and r is the radius of the orbit.

For an object to stay in a steady orbit; F=mv2/r where: F is the force on the object towards the centre of the orbit, m is the mass of the object, v is the radial velocity of the object, and r ...

JM
Answered by James M. Physics tutor
5455 Views

Solve 5x + 10 = 2x(5x + 10)

First multiply out the right hand side to get5x + 10 = 10x^2 + 20xThen rearrange so everything equals zero, forming a quadratic equation10x^2 + 15x - 10 = 0 To make things easier, you can simplify the equ...

AM
Answered by Amy M. Maths tutor
3784 Views

Discuss the possible effects that mutation can have on the structure and function of a protein (3 marks)

Mutation can result in changes to a proteins primary, secondary and tertiary structure. Deletion mutations and mutations resulting in a new stop codon can result in the <...

EM
Answered by Emma M. Biology tutor
6412 Views

Explain a reflex arc

A reflex arc is the nerve pathway which follows a reflex action. First a stimulus, like a pin prick, is detected by receptors in the skin. A sensory neurone then sends electrical impulses to a relay neuro...

CS
Answered by Clara S. Biology tutor
10428 Views

Lee este texto de la novela de José Martí, Amistad funesta. Complétalo, escogiendo palabras de la lista A – P en la página siguiente. Escribe la letra de la palabra en la casilla.

A K I G H O L J B P 
I will show the text during the lesson.

KD
Answered by Kate D. Spanish tutor
1820 Views

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