Physics, 21.07.2019 08:30 marleenlove3
All atoms of the element potassium have 19 protons. one of the most stable types of potassium atoms has the mass number 39. how many neutrons make up one of these potassium atoms? 19 20 38 58
Answers: 1
Physics, 22.06.2019 05:10
A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm
Answers: 2
Physics, 22.06.2019 15:40
If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.
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Physics, 22.06.2019 22:00
Should we celebrate the voyages of zheng he mini q answer key
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Physics, 23.06.2019 00:50
which statements describe the image? check all that apply.the wood is releasing argon gas.this information is useful for dating ancient rock.the process works only with organic matter.the element has a half-life of 5,730 years.this shows the half-life of carbon-19.
Answers: 1
All atoms of the element potassium have 19 protons. one of the most stable types of potassium atoms...
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