Well now, here we go again. When you start talking about the properties of
things moving near the speed of light, now you have to start specifying WHO
is measuring them.
-- If two scientists together got ahold of a piece of an asteroid one day,
brought it to their lab, measured its mass and its volume, calculated its
density, and each of them wrote the number down in his notebook, AND THEN . . .
-- If one of them somehow went to space and landed on that same asteroid,
while the other scientist, still on Earth, watched the asteroid shoot through
space at some high speed, THEN . . .
-- The travelling scientist, sitting on the asteroid and shooting through space,
could dig up a lump of it, measure its mass and volume, calculate its density,
check the number against his notebook, and he would find that it was still the
same density as before. It had not changed since he and his colleague did the
same measurement together in ther lab.
-- The scientist who stayed home ... if he had some way to measure the mass
and volume of a lump of the asteroid as it whizzed past him at a high speed ...
would find that its density has increased. That's because once the asteroid
started moving, any lump of it would shrink in the direction of its motion, while
the mass of the lump would become larger. More mass, divided by less volume,
would show up as increased density.
-- If the two scientists could communicate, they would get into a terrible argument.
Their answers would be different, and they would BOTH be correct.
-- And it would not even depend on the speed of the asteroid. It would happen
at ANY speed ... it's just that the DIFFERENCE would become greater as the speed
increases.
If you understand this, then you haven't read it carefully enough. What it describes
can't be. But it is.
I'm so glad you asked.
Gold has the highest density of the metals listed.
The property that has the greatest variation is a star's density.
Actually generally speaking Asteroids are heavily composed of high density rock. Dust and Ice are generally the properties of a Comet mostly because they aren't formed near the sun.
The Earth's core.
Osmium has the greatest density (of any stable element) - this is due to Lanthanide Contraction, where poor shielding of nuclear charge results in decreased atomic radius.
as density of medium increase velocity of sound decreases.
due to velocity modulation density modulation occurs in TWT
Steel has the greatest density of the three.
Mercury has the greatest density as a liquid in room temperture.
The Earth has the greatest average density, of all the planets.
Asteroids are "large" lumps of rock whereas meteoroids are small particles, either grains of dust or boulder sized lumps of material.
Fats (lipids) have the greatest calorific density, whether they are oils or animal fats.
In 1870, the area with the greatest population density was the city of Manila in the Philippines.
Dynamic pressure of air = 0.5 * density * velocity of air = Pascal Where: Density = kg / cubic meter Velocity of air = m / s
More resistance, caused by a greater density.
That is called the velocity of the object. Velocity = Distance divided by Time taken.
it is osmonium.