Which statements describe elements? Check all that apply -atoms of the same element can have different numbers of protons. A.-Atoms of the same element always have the same number of electrons. B.– Atoms of the same element can have different numbers of neutrons. C.– Atoms of the same element always have the same number of neutrons. D.– Atoms of the same element always have the same number of protons. E.– Atoms of the same element can be isotopes of that element.
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Physics, 21.06.2019 14:00
Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same
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Physics, 21.06.2019 17:30
What produces light and all other electromagnetic waves? a) the photoelectric phenomena b) heated metals c) charged particles d) radioactive samples (pls explain if you can : )
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Aphysical change is a change in the size, shape,, or stafe of matter true or false
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Physics, 22.06.2019 08:00
A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n
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Which statements describe elements? Check all that apply -atoms of the same element can have differe...
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