Mass of a sample of gas doesn't change, no matter what happens to its pressure, volume, or temperature.
Explanation:
The test for hydrogen consists of holding a burning splint held at the open end of a test tube of gas. If the gas is hydrogen it burns with a loud “squeaky pop” which is the result of the rapid combustion of hydrogen with oxygen to produce water.
If it takes
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seconds to reach the car, then the distance
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is
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.
The bear's distance from the tourist's starting point is
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For maximum
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, we set the equations equal to each other:
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

so the distance is
Folds and faults are difficult to identify because they occur in the interior of rocks and also due to the dense nature of the materials.
<h3>What are faults and folds?</h3>
Faults are lines of weakness are present in materials dues to uneven positioning of the particles of the material.
Folds occurs when infolds occur in materials.
Faults and folds usually occur in rocks.
Folds and faults are difficult to identify because they occur internally and also due to the dense nature of the materials.
Learn more about faults and folds at: brainly.com/question/14240712
Wavelength = (speed) / (frequency)
Speed of radio = speed of light.