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Examines the nature of inclined planes and wedges, how they can reduce the amount of force necessary to perform work, and ways in which they are used.
Número de páginas 48
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What causes sound? How does sound travel? Sound begins when matter vibrates. Without this vibration sound could not move and nothing would make any noise. Starting with tiny molecules, this book explains the main concepts of sound and furthers understanding through a series of easy-to-do experiments that will appeal to readers of all ages.
What is matter and where can it be found? Everything in the world is made of matter, whether it is a solid, a liquid, or a gas. Important ideas about matter such as volume, mass, and how matter changes state are conveyed through a series of easy-to-do experiments.
La vida de Eva, una muchacha de 12 años, sufre un giro dramático cuando su madre entra en coma por circunstancias desconocidas. Su padre, entonces, decide enviarla una temporada a la isla de El Hierro, con su abuelo, al que apenas ve. Allí no solo descubrirá los encantos y misterios de la zona, sus costumbres y sus gentes, sino que, ayudada por su nuevo amigo Jonay, vivirá una fantástica aventura en donde leyendas como la del Garoé juegan un papel esencial. El desafío de la leyenda es una estupenda novela de aventuras, llena de acción y misterio, que nos descubre los encantos y el...
Offers encouragement and practical advice for meeting challenges head on, with words of inspiration and fun, reminding girls to be who they are.
Con páginas desplegables y atractivos modelos realistas de las especies de dinosaurios más populares, este libro es una maravillosa introducción al mundo de estas fascinantes criaturas. With foldout pages and beautiful, realistic models of the most popular dinosaur species, this book is an incredible introduction to the world of these fascinating creatures.
This beautifully illustrated book will begin to give the reader a glimpse into what Heaven will be like and what God has prepared for those of us who love Him and believe in His Son, Jesus! "What is Heaven Like, Mimi?" is based on the true story of Joy Brandt, born in 1929, and her near-death experience when she was 9 years old. Heaven is a real place and there are Biblical scriptures throughout the book to refer to. "I go to prepare a place for you, I will come again and receive you unto Myself; that where I am, there you may be also." John 14:3
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