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Gennadij [26K]
3 years ago
8

If the mass of a material is 50 grams and the volume of the material is 5 cm^3, what would the density of the material be?

Physics
2 answers:
natta225 [31]3 years ago
7 0

Density is always (mass)/(volume).

For the piece of material you've got there, the density is

(50 grams)/(5 cm^3).

kotykmax [81]3 years ago
5 0
D = M / V

D = 50 / 5

D = 10 g/cm^3
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A uranium and iron atom reside a distance R = 44.10 nm apart. The uranium atom is singly ionized; the iron atom is doubly ionize
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Answer:

distance r from the uranium atom is 18.27 nm

Explanation:

given data

uranium and iron atom distance R = 44.10 nm

uranium atom = singly ionized

iron atom = doubly ionized

to find out

distance r from the uranium atom

solution

we consider here that uranium electron at distance = r

and electron between uranium and iron so here

so we can say electron and iron  distance = ( 44.10 - r ) nm

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so charge on electron is q1 =  - 1.602 × 10^{-19} C

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put here k = 9*10^{9} and find r

9*10^{9}\frac{1.602 *10^{-19}*1.602 *10^{-19}}{r^{2} }  =  9*10^{9}\frac{1.602 *10^{-19}*1.602 *10^{-19}}{(44.10-r)^{2} }

\frac{1}{r^{2} } = \frac{2}{(44.10 -r)^2}

r = 18.27 nm

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