ICSE Class 10 Answered

please answer both of these question soon

Asked by defence | 04 Apr, 2019, 07:20: PM

Expert Answer

1 90 space k m divided by h space equals space 25 m divided by s A s space w e space k n o w f r o m space w o r k space e n e r g y space t h e o r e m w o r k space d o n e space b y space f o r c e space equals space c h a n g e space i n space k i n e t i c space e n e r g y W space equals space space K f minus K i space equals space 1 half cross times m v squared space minus 0 space equals space 1 half cross times 1200 cross times 25 cross times 25 equals space 375 space K J n o w space a s space w e space k n o w fraction numerator w over denominator t space end fraction equals space P s o space t space equals space W over P equals space 375000 over 25000 space equals space 15 space s e c 2 i n space l e f t space s i d e space 10 o h m space a n d space 8 space o h m space r e s i s t o r s space a r e space i n space s e r i s space t h e n space t h e space r e s u l a tan t space equals space 18 space o h m t h i s space 18 o h m space i s space i n space p a r a l l e l space w i t h space 9 o h m space t h e space e q u i v a l e n t space r e s i s tan c e space equals space 6 o h m t h i s space 6 space o h m space i s space i n space s e r i e s space w i t h space 14 space o h m space s o space t h e space r e s u s l tan t space r e s i s tan c e space equals space 14 plus 6 space equals space 20 space o h m o n space t h e space r i g h t space s i d e t h e space 15 space o h m space a n d space 5 space o h m space r e i s s t o r s space a r e space i n space s e r i e s space t h e n space t h e space e q u i v a l e n t space r e s i s tan c e space equals space 15 plus 5 equals space 20 space o h m t h i s space 20 o h m space r e s i s tan c e space i s space i n space p a r a l l e l space w i t h space 20 space o h m space s o space t h e space e q u v a l e n t space r e s i s t o r s space equals space 10 o h m t h i s space 10 space o h m space i s space i n space s e r i e s space w i t h space 6 space o h m space s o space t h e space r e s u l tan t space equals space 10 plus 6 space equals 16 o h m t h i s space 16 space o h m space i s space i n space p a r a l l e l space w i t h space 48 space o h m space s o space t h e space e q u i v a l e n t space r e s i s tan c e space equals 12 space o h m t h i s space 12 space o h m space i s i s space s e r i e s space w i t h space l e f t space s i d e space s o space t h e space n e t space r e s i s tan c e space b e t w e e n space p o i n t space A space A n d space B space i s space space equals space 12 plus 20 equals 32 o h m

Answered by Ankit K | 04 Apr, 2019, 11:20: PM

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ICSE Class 10 Answered

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