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3 years ago

15

Subtances found on the periodic table are considered elements compounds and molecules true or false

1 answer:

Aneli [31]3 years ago

3 0

I believe your answer would be False

They would only be elements because compounds and molecules consist of multiple elements

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A simple ideal Brayton cycle uses argon as the working fluid. At the beginning of the compression, P1 = 15 psia and T1 = 70°F, t

Shtirlitz [24]

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4 years ago

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prohojiy [21]

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3 years ago

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3 years ago

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A train car has a mass of 10,000 kg and is moving at +3.0 m/s. It strikes an identical train car that is at rest. The train cars

shtirl [24]

In order to compute the final velocity of the trains, we may apply the principle of conservation of momentum which is:
initial momentum = final momentum
m₁v₁ = m₂v₂

The final mass of the trains will be:
10,000 + 10,000 = 20,000 kg
Substituting the values into the equation:

10,000 * 3 = 20,000 * v
v = 1.5 m/s

The final velocity of the trains will be 1.5 m/s

3 0

3 years ago

String linear mass density is defined as mass/unit length. Calculate the linear mass density in kg/m of a string with mass 0.3g

SIZIF [17.4K]

Answer:

Linear mass density, $\lambda=2\times 10^{-4}\ kg/m$

Explanation:

Given that,

Mass of the string, m = 0.3 g = 0.0003 kg

Length of the string, l = 1.5 m

The linear mass density of a string is defined as the mass of the string per unit length. Mathematically, it is given by :

$\lambda=\dfrac{m}{l}$

$\lambda=\dfrac{0.0003\ kg}{1.5\ m}$

$\lambda=0.0002\ kg/m$

or

$\lambda=2\times 10^{-4}\ kg/m$

So, the linear mass density of a string is $2\times 10^{-4}\ kg/m$ . Hence, this is the required solution.

5 0

4 years ago