7 question, test prepared

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7 question, test prepared

7 question, test prepared
1 . S uppose y o u a re b ore d a nd d ecid e to d o s o m e p eople w atc h in g. Y ou n otic e a lo ng lin e o f p eople w ait in g fo r s o m eth in g. A s th e f ir s t p ers o n l e ave s th e lin e th ere w ould b e a g ap, w hic h w ould g et fille d. B ut th e g ap w ould e xte nd a ll t h e w ay d ow n th e lin e. W hat d ete rm in es th e s p eed o f th is g ap? Is th is a n e xa m ple o f a tr a nsve rs e o r a lo ngit u din al w ave ? 2 . B eca use y o u r e ve l in c h aos y o u’v e d ecid ed th at it w ould b e in te re stin g to h ave a p endulu m w it h th e b ob m ade o ut o f a g la ss s p here th at’s f ille d w it h M erc u ry . W hat w ould h appen to th e fr e quency o f th is p endulu m if th e s p here h ad a h ole in it a nd w ould a llo w t h is M erc u ry to le ak o ut s lo w ly ? 3 . W hat a re s o m e r e aso ns w hy m ost c e ilin gs a re m ad e fr o m w hit e , te xtu re d m ate ria l? 4 . I f a c ylin der o f s o lid g la ss o r c le ar p la stic is p la ce d a bove th e w ord s L E AD O XID E a nd v ie w ed fr o m a bove a s is s h ow n in th e b elo w p ic tu re w e s e e th at th e r e d L E AD g ets i n ve rte d b ut th e b lu e O XID E d oesn ’t . E xp la in w hy. 5 . T he in dex o f r e fr a ctio n fo r r e d lig ht is 1 .3 31, a nd t h at fo r b lu e lig ht is 1 .3 40. If a r a y o f w hit e lig ht e nte rs th e w ate r fr o m a ir a t a n a ngle o f in cid ence o f 8 3.0 0 d egre es, w hat a re t h e u nderw ate r a ngle s o f r e fr a ctio n fo r th e b lu e a nd r e d c o m ponent? 6 . A t a n in te rs e ctio n o f h osp it a l h allw ays, a c o nve x m ir ro r is m ounte d h ig h o n a w all to h elp p eople a vo id c o llis io ns. T he m ir ro r h as a r a d iu s o f c u rv a tu re . L oca te a nd d escrib e th e i m age o f a p atie nt 1 0.0 m fr o m th e m ir ro r. D ete rm in e t h e m agnif ic a tio n o f th e im age. 7 . D ia m onds h ave a s p ark le to th em b eca use o f th e r a th er h ig h c rit ic a l a ngle fr o m d ia m ond i n to a ir . T his m eans th at lig ht b ounce s a ro u nd in sid e o f a d ia m ond m any m ore tim es a nd w ill le ave a d ia m ond g oin g in a ll d ir e ctio ns. D ete rm in e t h e c rit ic a l a ngle fo r th e a ir /d ia m ond b oundarie s. T he in dex o f r e fr a ctio n fo r d ia m ond is 2 .4 17.

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