Предмет: Физика, автор: TeaWithMint2000

главный мозг или професеор помогите пожалуйста с решением заранее при многом благодарен:),спам=бан​

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Ответы

Автор ответа: fatt52
1

Ответ:

Объяснение:

7) A=2.3*10⁸ Дж    m=2 кг  q=4.6*10⁷ Дж/кг   n=?

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n=A/Q=A/(q*m)=2.3*10⁸/(4.6*10⁷*2)=0.25 (25%)

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8) Δt=40°   m1=0,01 кг   c=4200 Дж/(кг*С)   r=22.6*10⁵ Дж/кг   m2=?

===

r*m1=c*m2*Δt

m2=r*m1/(c*Δt)=22.6*10⁵*0.01/(4200*40)≈0.135 кг

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