Предмет: Другие предметы, автор: harafgt

Провести розрахунок виливки "Куля", за вихідними данними:
1.знайти об'єм виливки
2.знайти масу (вагу) виливки
Дані:диаметр-50см, питома вага сплаву Ст.3- 7.8кг/см3

Ответы

Автор ответа: m9ster
0

Ответ:

1. Радіус кулі: r = 50см / 2 = 25см

Об'єм кулі: V = (4/3) * π * r³ = (4/3) * 3.14 * 25³ = 65 449 см³

Об'єм виливки дорівнює об'єму кулі.

Об'єм виливки: 65 449 см³

2. Маса виливки дорівнює об'єму, помноженому на питому вагу.

Маса виливки: 65 449 см³ * 7.8 кг/см³ = 510,157 кг (або 510 кг 157 грамів)

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Sylvia Venner is a 12 year old dancer. She's from Australia but lives in Whitstable, England,
with her parents, her older sister sister Gloria and younger brother Charlie. She dances in competitions.
Her dream is to dance on stage in a London theatre. When Sylvia was four, her mother started dancing
with her for fun. A year later, Sylvia joined a dance school in the town where she lives. She works
hard at dancing. “I practice for two hours every day after school and for three hours every Saturday
morning. My feet are still growing. It's important to make sure you have the right size shoes when you
dance in competitions so last month I went to London to buy some new ones.
1) Whose family lives in the UK?
a) Sylvia b) Parents c) Sylvia's d) Her parent
2) Which child is the oldest in their family?
a) Gloria b) Charlie c) Sylvia d)Their mother
3) What's Sylvia's greatest wish?
a)to go to Australia
b)to go to the theatre
c)to buy new shoes d)to dance in a London theatre
4) How old was Sylvia when she started dancing?
a)three b)four c)six d)seven
5) How old was Sylvia when she began to study at a dance school?
a)four b)five
d)seven
6) On what days does Sylvia study dancing in the morning?
a)at weekends b)on Saturdays c)on Sundays don all week days
7) What is Sylvia's problem?
a)she is tired b)her feet are growing c)she feels bad d)she often falls down
8) In Sylvia's opinion, what is important when dancing competitions?
a)to be tall b) to be thin c) to have nice shoes d)to have the right size shoes
9) When did Sylvia go to London?
a)next month b) last month c) this month
c) six
d) last year​