Предмет: Физика, автор: notqgo

V=0,013м^3
t=12с
P=11300км/м^3
F?

Ответы

Автор ответа: nastasia658
1

Ответ:

Дано:                             СИ

V  = 120 см³               120·10⁻⁶ м³

ρ =  7 800 кг/м³                                       - плотность стали

___________

m - ?

По формуле:

m = ρ·V

находим массу стальной детали:

m = 7800· 120·10⁻⁶ = 0,936 кг

Ответ: m = 0,936 кг

Объяснение:

по моему так

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Глагол ‘TO BE’ (быть кем-то, чем-то; находиться где-то)

Infinitive Past Indefinite Participle II
to be was (ед. ч.)
were (мн. ч.) been


спряжение глагола’to be’

Лицо Форма
Present Past Future
I
He
She
It
We
You
They am
is
is
is
are
are
are was
was
was
was
were
were
were shall be
will be
will be
will be
shall be
will be
will be