What is dark matter? what is dark matter? matter for which we have theoretical reason to think it exists, but no observational evidence for its existence matter consisting of black holes matter that may inhabit dark areas of the cosmos where we see nothing at all matter that we have identified from its gravitational effects but that we cannot see in any wavelength of light
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Physics, 21.06.2019 23:30
After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?
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Physics, 23.06.2019 03:00
0.5 kg of silver increases temperature from 0 celsius to 7 celsius when heat is added how much heat energy produced this change in temperature
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Physics, 23.06.2019 07:20
An object that weighs 75n is pulled on a horizontal surface by a horizontal pull of 50 n to the right. the friction force on this object is 30 n to the left. what is the acceleration of the object?
Answers: 1
What is dark matter? what is dark matter? matter for which we have theoretical reason to think it...
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