A frog with the mass 30 g rests on the little wooden square float with square 100 cm2 and height 5 cm. How high shall the frog jump in order to make a float sink into the water completely. The water density is 1000 kg/m3, The wood density is 740 kg/m3. Please present the result in meters, rounded up to 3 significant digits.
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I seem not to understand this, or maye the formula used is different
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