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junior college 2 | H2 Maths
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junior college 2 chevron_right H2 Maths chevron_right Singapore

please help for physics ! thank you

Date Posted: 3 years ago
Views: 253
NABIL EL EUCH
NABIL EL EUCH
3 years ago
Radius of circular bowl = 400 /2 = 200mm

Speed of pulse = 250mms-1
In 1 second, the distance travelled by the pulse would be
Distance travelled = Speed x Time = 250 x 1 = 250mm




However, the pulses formed on the surface of the water would reflect each other at the centre of the circular bowl, where they meet. So, any specific pulse would move (from the side of the bowl) to the centre of the bowl (a distance of 200mm from the side of the bowl), and then it gets reflected back (now moving towards the side of the bowl).

In 1 second, a pulse moves a total distance of 250mm. For the first distance of 200mm, it moves inwards (towards the centre). Thus, for the remaining 50mm, the pulse is moving outwards, at a radius of 50mm.

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NABIL EL EUCH
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