Physics, 17.10.2021 21:00 tyannamonae
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The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?
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If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c
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2. A sample of strontium-90 has an activity of 5000 Bq. After 120 years the activity has fallen to 6...
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