Physics, asked by blazeayaan12, 8 months ago

Theory A group of students is asked to determine the diameter of a large inflatable beach ball. One student uses a long piece of string to find the circumference of the ball. He then calculates the diameter. Suggest one practical difficulty in measuring the circumference of the ball. …..................................................................................................................................................... ......................................................................................................................................................... .................................................................................................................................................... [1] (i) Describe a different method that another student may use to measure directly the diameter of the beach ball. You may include a diagram in your answer. ......................................................................................................................................................... ......................................................................................................................................................... ......................................................................................................................................................... .................................................................................................................................................... [2] (ii) Suggest two ways in which the student in (b)(i) can make the measurement of the diameter accurate. 1 .................................................................................................................................................... ......................................................................................................................................................... 2 ..................................................................................................................................................... ......................................................................................................................................................... [2]

Answers

Answered by Itznikhilhere

$<!DOCTYPE html> <html> <head> <title>3D Animation</title> </head> <body> <div class="stage" style="width: 120px; height: 120px;"> <div class="cubespinner"> <div class="face1">Nikhil </div> <div class="face2">Cricketer</div> <div class="face3">Your_Freind</div> <div class="face4">Heroic</div> <div class="face5">Phenomenol</div> <div class="face6">Man_Mortal</div> </div> </div> <style> body { margin: 100px 50px 50px 50px; } @-webkit-keyframes spincube { from,to { -webkit-transform: rotateX(0deg) rotateY(0deg) rotateZ(0deg); } 16% { -webkit-transform: rotateY(-90deg); } 33% { -webkit-transform: rotateY(-90deg) rotateZ(90deg); } 50% { -webkit-transform: rotateY(-180deg) rotateZ(90deg); } 66% { -webkit-transform: rotateY(-270deg) rotateX(90deg); } 83% { -webkit-transform: rotateX(90deg); } } @keyframes spincube { from,to { -moz-transform: rotateX(0deg) rotateY(0deg) rotateZ(0deg); -ms-transform: rotateX(0deg) rotateY(0deg) rotateZ(0deg); transform: rotateX(0deg) rotateY(0deg) rotateZ(0deg); } 16% { -moz-transform: rotateY(-90deg); -ms-transform: rotateY(-90deg); transform: rotateY(-90deg); } 33% { -moz-transform: rotateY(-90deg) rotateZ(90deg); -ms-transform: rotateY(-90deg) rotateZ(90deg); transform: rotateY(-90deg) rotateZ(90deg); } 50% { -moz-transform: rotateY(-180deg) rotateZ(90deg); -ms-transform: rotateY(-180deg) rotateZ(90deg); transform: rotateY(-180deg) rotateZ(90deg); } 66% { -moz-transform: rotateY(-270deg) rotateX(90deg); -ms-transform: rotateY(-270deg) rotateX(90deg); transform: rotateY(-270deg) rotateX(90deg); } 83% { -moz-transform: rotateX(90deg); -ms-transform: rotateX(90deg); transform: rotateX(90deg); } } .cubespinner { -webkit-animation-name: spincube; -webkit-animation-timing-function: ease-in-out; -webkit-animation-iteration-count: infinite; -webkit-animation-duration: 12s; animation-name: spincube; animation-timing-function: ease-in-out; animation-iteration-count: infinite; animation-duration: 12s; -webkit-transform-style: preserve-3d; -moz-transform-style: preserve-3d; -ms-transform-style: preserve-3d; transform-style: preserve-3d; -webkit-transform-origin: 60px 60px 0; -moz-transform-origin: 60px 60px 0; -ms-transform-origin: 60px 60px 0; transform-origin: 60px 60px 0; } .cubespinner div { position: absolute; width: 300px; height: 300px; background: rgba(255,255,255,0.9); line-height:200px; text-align: center; font-size: 50px; } .cubespinner .face1 { color: CadetBlue; -webkit-transform: translateZ(60px); -moz-transform: translateZ(60px); -ms-transform: translateZ(60px); transform: translateZ(60px); } .cubespinner .face2 { color: ForestGreen; -webkit-transform: rotateY(90deg) translateZ(60px); -moz-transform: rotateY(90deg) translateZ(60px); -ms-transform: rotateY(90deg) translateZ(60px); transform: rotateY(90deg) translateZ(60px); } .cubespinner .face3 { color: blue; -webkit-transform: rotateY(90deg) rotateX(90deg) translateZ(60px); -moz-transform: rotateY(90deg) rotateX(90deg) translateZ(60px); -ms-transform: rotateY(90deg) rotateX(90deg) translateZ(60px); transform: rotateY(90deg) rotateX(90deg) translateZ(60px); } .cubespinner .face4 { color: orange; -webkit-transform: rotateY(180deg) rotateZ(90deg) translateZ(60px); -moz-transform: rotateY(180deg) rotateZ(90deg) translateZ(60px); -ms-transform: rotateY(180deg) rotateZ(90deg) translateZ(60px); transform: rotateY(180deg) rotateZ(90deg) translateZ(60px); } .cubespinner .face5 { color: red; -webkit-transform: rotateY(-90deg) rotateZ(90deg) translateZ(60px); -moz-transform: rotateY(-90deg) rotateZ(90deg) translateZ(60px); -ms-transform: rotateY(-90deg) rotateZ(90deg) translateZ(60px); transform: rotateY(-90deg) rotateZ(90deg) translateZ(60px); } .cubespinner .face6 { color: DarkSlateGray; -webkit-transform: rotateX(-90deg) translateZ(60px); -moz-transform: rotateX(-90deg) translateZ(60px); -ms-transform: rotateX(-90deg) translateZ(60px); transform: rotateX(-90deg) translateZ(60px); } </style> </body> </html>$

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Answered by cute71367

One practical difficulty in measuring the circumference is that if you bring students to the beach they might be more inclined to sun bathe and go swimming.

Another that they might not have brought along a tape measure.

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