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x = 2t + 5, y = 3 + 4/t. a) Find dy/dx at (9.5) and b) find y in terms of x.

This is a standard parametric equations question, it is important that the methodology behind answering this question is understood.

For part a) we simply use the chain rule (dy/dx = dy/d...

Answered by Jonathan T. • Maths tutor

9976 Views

A student is measuring the acceleration due to gravity, g. They drop a piece of card from rest, from a vertical height of 0.75m above a light gate. The light gate measures the card's speed as it passes to be 3.84 m/s. Calculate an estimate for g.

This question is simply a matter of finding and applying the correct equation of motion.

First, draw a diagram - even if the situation in the questions seems really simple, it's always us...

Answered by Philippa M. • Physics tutor

7476 Views

What is the self fulfilling prophecy?

Labelling and the self-fulfilling prophecy explains criminal and anti-social behaviour in terms of societal factors, specifically the way others behave towards you.The self-fulfilling prophecy shows how a...

Answered by Nish S. • Psychology tutor

18734 Views

A votre avis, quels sont les avantages de faire du sport et pourquoi est-ce que tant de jeunes n’en font pas assez ? Qu’est-ce qu’on peut faire pour encourager les jeunes à faire plus de sport ?

Faire du sport est quelque chose d'essentieul. Malheureusement, beaucoup de jeunes aujourd'hui n'ont simplement pas le temps d'en pratiquer. A cause de la pression scolaire, ils sont obligés de se conc...

Answered by Lois S. • French tutor

3200 Views