Physics, 05.10.2019 03:00 corianrigby97
Tiguan moved a solid and a liquid together in a beaker. he
determined that a chemical change occurred,
if his conclusion is correct, which substances could he have
been observing and why?
ice mixed into warm ol, because the change of state that
occurred when the ice melted cannot be reversed
baking soda mixed into vinegar, because the production of
bubbles indicates that a new substance formed
sugar moved into hot water, because the disappearance of
solid indicates that the chemical identity of the sugar
changed
sand mixed into water, because when sand was added
the mass of the beaker increased
subs
Answers: 3
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Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?
Answers: 1
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A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.
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Tiguan moved a solid and a liquid together in a beaker. he
determined that a chemical change o...
determined that a chemical change o...
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