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Physics, 21.06.2019 20:30
When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m
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Physics, 21.06.2019 22:30
The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage
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Physics, 22.06.2019 08:00
5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.
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Physics, 22.06.2019 11:20
More solar radiation is absorbed by earth’s surface than by
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Afactor that influences your resting metabolic rate is...
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