Physics, 16.12.2020 23:50 andres2865
Krypton-85 has a half-life of 10.76 years. It decays into rubidium-85. Suppose a sample contains 4 atoms of krypton-85 and 12 atoms of rubidium-85. About how old is the sample?
Answers: 2
Physics, 22.06.2019 12:00
Infrared radiation has wavelengths that are shorter than visible light is part of the visible light spectrum has wavelengths that are longer than visible light has the same wavelengths as ultraviolet radiation
Answers: 1
Physics, 22.06.2019 12:30
Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground.what is his gravitational potential energy above the ground?
Answers: 1
Physics, 22.06.2019 21:00
Earth's atmosphere is composed of mostly two gases. name the two gases that make up the majority of the atmosphere and use the pie chart to tell the percentages of each.
Answers: 2
Krypton-85 has a half-life of 10.76 years. It decays into rubidium-85. Suppose a sample contains 4 a...
English, 28.06.2019 20:30
Mathematics, 28.06.2019 20:30
Health, 28.06.2019 20:30
Mathematics, 28.06.2019 20:30
Biology, 28.06.2019 20:30
English, 28.06.2019 20:30