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Serjik [45]
2 years ago
9

(URGENT 75 points)You are given two same party balloons (one filled with helium and the

Physics
1 answer:
skad [1K]2 years ago
5 0

\frac{100}{0.214+-0.006} = 454.55 g/cm3

I'm not too sure since the graduated cylinder was missing and I really don't know how to do it then. But give this a shot. Are you sure it wasn't a graduated cylinder, because I have no idea what that means

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What does the model below represent?
serious [3.7K]

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B. a chemical reaction

Explanation:

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3 years ago
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What's the momentum (in kg-m/s) of a cannonball with a mass of 21 moving with a velocity of 25 m/s?
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P=mv
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A tank of volume 0.25 ft is designed to contain 50 standard cubic feet of air. The temperature is 80° F.Calculate the pressure i
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Answer:

The inside Pressure of the tank is 4499.12 lb/ft^{2}

Solution:

As per the question:

Volume of tank, V = 0.25 ft^{3}

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Temperature, T' = 80^{\circ}F = 299.8 K

Temperature, T = 59^{\circ}F = 288.2 K

Now, from the eqn:

PV = nRT                      (1)

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n' = 2n

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n and n' are the no. of moles

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\frac{PV}{P'V'} = \frac{nRT}{n'RT'}

P' = 2P\frac{T'}{T} = 2\times 2116\times \frac{299.8}{288.2} = 4499.12 lb/ft^{2}

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3 years ago
The area in which the attraction and the repulsion of a magnet's poles are felt is a(n)
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The are is called a magnetic field.


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An instrument is defective for all of the following conditions EXCEPT:_______
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