Answer:
12
Step-by-step explanation:
5^2 + b^2 = 13^2
25 + b^2 = 169
169-25= 144
take the square root of 144
answer: 12
Answer:
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Step-by-step explanation:
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It will take 8.2 x 10^20 electrons to have the same mass as one dust particle.
To get this answer, we divided the mass of the dust particle by the mass of the electron.
7.5 x 10^-10 divided by 9.1 x 10^-31 is 8.2 x 10^20