December 2018 2 17 Report
1 suatu batang plastik digosom dengan kain wol berulang kali.jika batang plastik tersebut didekatkan ke potongan potongan kertas kecil,potongan kertas akan
a tertarik batang plastik yang bermuatan listrik negatif
b tertarik batang plastik yang bermuatan listrik positip
c tidam tertarik batang plastik yang bermuatan listrik negatif
d tidak tertarik batang plastik yang bermuatan listrik positip

2 seseorang mengamati sebuah benda yang amat kecil dengan miskroskop.jarak fokus lensa objektif=6 mm dan jarak fokus lensa okuler=4 cm.benda yang diamati diletakkam 7 mm di depan lensa objektif.panjang mikroskop jika mata tak berakomodasi adalah
a 4,2 cm
b 8,2 cm
c 18,75 cm
d 37,5 cm

3 ciri ciri tranformator step up di antaranya adalah
a np>ns dan lp>ls
b np>ns dan lp c npls
d nl
4 dengan menggunakan termometer skala kelvin,suhu sebuah benda terukur 353 k jika suhu benda tersebut diukur dengan termometer skala fahrenheit akan menunjukkan suhu
a 64 f
b 80 f
c 176 f
d 373 f

5 pada suatu pengukuran,suhu benda dengan termometer skala celcius terukur suhu 40 c jika pengukuran dilakukan dengan termometer skala fahrenheit,suhu benda tersebut sama dengan
a 40 f
b 54,22 f
c 72 f
d 104 f

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How to jog wthout getting ant lower back pain buy supportive shoes bad pair of shoes can be the main cause of back pain joggers should replace their shoes at least once every year even if they appear to have little wear and tear on the outside buy extra arch supports if you have high arches this will increase the cushion on the bed of the shoe and prevent fallen arches and other injuries food injuries can also cause low back pain because the structures that support the back are weak jog on a soft surface as often as possible choose a rubber track or soft soil over concreate jogging is a high impact sport that causes shock waves to travel up yout spine every time you hit a hard surface warm up your muscles prior to every jogging session walk for 1 to 2 blocks before you start to jog start slow and slowly build up speed after the first half of a mile do reguler toning and strengthening exercises alternate your jogging sessions with pilates or yoga to strengthen individual muscles throughout your entire body train with light weight or resistance bands 2 to 3 times per week 1 why should ww replace our jogging shoes every year because a back pain can be caused by bad shoes b it will break after five uses c it will have new tears every year d we will always need new shoes every year 2 foot injuries can also cause low back pain the underlined word is closest in meaning to a heels b odor c stink d wounds 3 why do we need to jog on a soft surface to a increase the cushion on the bed of the shoe b minimize shockwaves that travel up to our spine c prevent fallen arches and other injuries d warm up our muscles
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