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2 years ago

8: As a grade-school project, students construct a mobile representing some of the major food groups.

Physics

1 answer:

Airida [17]2 years ago

4 0

Answer:

m1=0.72kg m2=0.48kg m3=0.98

Explanation:

12*m1=18*m2, so 2*m1=3*m2

6*(m1+m2)=24*.03, so 2*m1+2*m2=2.4

so, 5*m2=2.4, m2=0.48 then, m1=0.72

(m1+m2+0.3+0.2)*18=31*m3

1.7*18=31*m3

m3=0.98

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MakcuM [25]

Answer:

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Explanation:

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$I_{0}$ = $10^{-12}$ W/ $m^{2}$

β=55 dB

Therefore plugging into the equation the values,

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Answer:

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