PA Physics home work

 Bersama Dia Yosua 1:9   "Bukankah telah Kuperintahkan kepadamu : kuatkan dan teguhkanlah hatimu? Janganlah kecut dan tawar hati, sebab TUHAN, Allahmu, menyertai engkau, ke manapun engkau pergi “. Bersama Dia Tanyaku Sering kita terdiam untuk sekedar bertanya, Kini telah sampai di manakah diriku ? Apakah aku masih sebatang ranting kering? Ataukah kini menjadi dahan yang kuat?   Sering kita terdiam untuk sekedar bertanya, melihat di balik cermin,     apakah semuanya baik baik saja Sipu terpampang menyudahi pandangan, kembali merenung siapakah kita, tanya yang mampu menggoyahkan keyakinan. jawaban lirih bukan saja terbuang tapi tertindas dan tenggelam dalam lumpur Coba aku pahami namun semua tetap tak terbaca seolah   hilang dalam gelap, Merintih di sudut jalan, tak terbaca, terbuang, tak bernilai Sempatku terdiam dan memahami segala masalah Namun semua tetap terlilit dalam kabut Akankah semua kembali berwarna. Terlihat ...

SIMPLE MECHINES 1 LEVER

Simple Mechine

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Practice sound from water in glass Practice music instrument glass filled water

Sound test questions 1 What type of waves are sound waves? Light Transverse Longitudinal 2 Which do sound waves travel fastest through? Solid Gas Liquid 3 What are the areas where particles are pulled further apart in sound waves called? Compression Vacuum Rarefaction 4 What is the name given to the range above human hearing? Infrasound Ultrasound Infrared 5 What is the speed of sound in air? 300 000 km/s 340 m/s 340 miles per hour 6 Which of these is the correct order for the speed of waves starting with the fastest? Sound, light, water Light, water, sound Light, sound, water 7 Which of these is the correct equation for speed? speed = distance ÷ time speed = distance × time distance = speed × time 8 Where is SONAR used? In hospitals to find broken bones In fishing boats to find fish In hospitals to look at unborn babies 9 What are the units of frequenc...

PAPhysicsScience Engineering Physics Questions and Answers – Sounds and Waves – 1 This set of Engineering Physics Multiple Choice Questions & Answers (MCQs) focuses on “Sounds and Waves – 1”. 1. Statement: Ocean waves hitting a beach are always found to be nearly normal to the shore. Reason: Once waves hitting a beach are assumed to be plane waves. a) Both statement and reason are true and the reason is the correct explanation of the statement b) Both statement and reason are true but the reason is not the correct explanation of the statement c) Statement is true but the reason is false d) Both statement and reason are false View Answer Answer: a Explanation: Both the statement and reason are true. Once waves are transverse in nature, they hit the shore normally. As these waves spread out, their radius of curvature becomes so large that they may be considered as plane waves. 2. Statement: When a beetle moves along the sand within a few tens of centimetres of a...