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Lily goes on a car journey. For the first 30 min. her average speed is 40 mph. She then stops for 15 min. She then completes the journey at an average speed of 60 mph. The total journey time is 1 h. What is her overall average speed?

average speed=total distance/time taken ; distance=speed x timeFor the first part of her motion the distance she travelled, d₁=40 x 1/2 (as 30 minutes represent half an hour), so d₁=...

Answered by Stefania-Alexandra J. • Maths tutor

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How the 'Wizard of Oz' Film Influenced Fashion

The “The Wizard of Oz” has had a large influence on fashion, both in design and in photos. Just look at Vogue’s December 2005 photo shoot taken by famed photographer, Annie Leibovitz. It features actress ...

Answered by Emily B. • Design & Technology tutor

2693 Views

Describe energy transformations in a oscillating pendulum, which undergoes simple harmonic motion. How this implies the velocity at critical (lowest and highest) points?

Our object will have a combination of potential energy (due to it's position relative to the ground) and kinetic energy (due to it's velocity).Consider the potential energy first. It depends on the height...

Answered by Ksenija K. • Physics tutor

2083 Views

Silas Marner: Write about Eppie and how she is presented in the novel.

Throughout the novel, George Eliot presents Eppie as innocent, angelic and perfect. Description of her as 'golden' reflects how precious she is due to the value of gold both now and in the nineteenth cent...

Answered by Emily B. • English Literature tutor

5784 Views

A shape consists of a quarter circle (radius r = 4cm) attached to a triangle (side length = 4cm and hypotenuse = 5cm). This shape is surrounded by a square (side length 8cm). If the shape is coloured in, what is the area in the square that is uncoloured?

Draw out what the question says. Geometric problems are easier to solve when they can be visualised. First calculate the area of the quarter circle: A = 1/4 \pi r^2Use Pythagoras to calculate the base len...

Answered by Tom A. • Maths tutor

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