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2 years ago

When the volume of the gas is 16 cm3, its pressure is 20 L/cm2. Find the volume of the gas when the pressure is 2.2 L/cm2.

Mathematics

2 answers:

olga55 [171]2 years ago

6 0

The answer is a.145.45cm^3

gizmo_the_mogwai [7]2 years ago

6 0

Answer:

option A

Step-by-step explanation:

given,

Volume of gas(V₁) = 16 cm³

Pressure of the gas(P₁) = 20 L/cm²

Volume of Gas(V₂) when pressure(P₂) is 2.2 L/cm²

considering temperature constant

P₁ V₁ = P₂ V₂

20 × 16 =2.2 × V₂

V₂ = $\dfrac{20\times 16}{2.2}$

V₂ = 145.45 cm³

hence, the correct answer is option A

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2000 soldiers stand in a row. Beginning from the left, each soldier calls out a number, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, and

Cloud [144]

Answer:

The number of soldiers that call out a number 3 is 666 soldiers

Step-by-step explanation:

The parameters given are;

Number of soldiers = 2000

Soldiers calling from the left = 1, 2, 3,.....

Soldiers calling from the right = 1, 2, 3,.....

Therefore, since the number soldiers calling out the number 3 are 1 in 3 from the left and 1 in 3 from the right, we split the soldiers into 2 groups of 1000, with one group calling from left and the other group calling from the right;

The number of 3s in called out in the first group from the left is therefore;

1000/3 = 333.33 which is 333 soldiers or from the 3rd soldier to the 999th soldier

Similarly the number of 3s called out from the second group = 333

Hence the total number of soldiers that call out a number 3 = 333 + 333 = 666 soldiers.

8 0

2 years ago

the diagram shows a rectangle is 13 cm the area of the rectangle is 93.6 cm calculate the width of the rectangle.

Korvikt [17]

Answer:

7.2 cm

Step-by-step explanation

The area of a rectangle is calculated by multiplying the width and the length together. Therefore:

13 multiplied by x = 93.6

x = 93.6 divided by 13

x= 7.2

3 0

2 years ago

Read 2 more answers

What is the approximate value of x in the diagram below? (Hint: You will need

Delicious77 [7]

Answer:

B. 39.59

Step-by-step explanation:

So 43 degrees, you know the length of the opposite side (27) and the angle (43 degrees), the only unknown is the hypotenuse. So you're looking for a trigonometric ratio that uses the angle (all of them do, except technically the inverse don't), the opposite side, and the hypotenuse. Sine is defined as $\frac{opposite}{hypotenuse}$ . So let's plug in known values: