SweetBriar
16.11.2020 •
Physics
If velocity is measured in kilometers per hour and time in measured in hours, the unit of acceleration is
a. hours
b. kilometers per hour
c. kilometers per hour per hour
d. kilometers
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Ответ:
c - kilometres per hour²
Ответ:
Question: "What is the half life of Strontium-90? Explain your answer"
28.8 years / Strontium-90 has 52 neutrons and 38 protons.