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Physics, 21.06.2019 19:30
Describe the path of a ray that approaches a mirror parallel to the principal axis.
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Physics, 22.06.2019 12:00
Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?
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If you let go of the notebook after lifting it, will it move? how?...
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