refraction

A bird in air is diving veritcally over a tank with speed 5 cm/s. Base of tank is silvered. A fish in the tank is rising upward along the same line with speed 2 cm/s. Water level is falling at a rate of 2 cm/s.{n of wter is 4/3}

What is the speed of the image of fish as seen by the bird directly?
What is the speed of the image of the fish seen by the bird...after reflection from the base??
What is the speed of image of bird relative to th fish looking upwards in cm/s?

4 Answers

1
Che ·

for 3rd 8cm/s ??

1
cute_cat ·

yeah.....
that was a mere guess u made no????
and but for the others....??

1
Philip Calvert ·

no need to guess on this one..

BT is being a bit too generous in physics u would say after having a look at their maths paper. !

as far as i remeber 1st one would be 6
2nd would be 3

1
Che ·

hey that wasnt a guess......i dont make guesses lik that without solving....so dont presume anything...ok
btw is this a bt q?
and if its a bt q....why r u asking here ....dont they hav solns.?

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