An empty party balloon will float to the ceiling of a room once it is filled with helium.A. What does this tell you about the density of air in the room compared to the density of helium?
B. For the balloon to float in air, what two factors might have changed about the balloon?
Answer those two questions of you know the answer.
Answers
Helium is a gas composed of itself, were air is composed of Oxygen and Nitrogen making the air more dense than the helium making it float to find other gases
Two factors to change are Air pressure (due to the balloon moving ) and the helium making the balloon rise.
That's about all I can explain...hope this helps >.<
What is a good sentence for the word orbit?
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All of the planets orbit around the sun, due to the gravitational pull of the sun
all the planets in our solor syestem orbit the sun
What is the best thing to study in Antartica?
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The animals, climate, weather.
The most basic is the weather and animals. But the soil and ice also tells about the past a lot.
About how much is one liter?
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Look at the liter man it’s a great way to learn how much every liquid measurement is
If the forces acting on a moving object are balanced what will happen to the object
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I don't think the object would have a change in motion since the net force acting on the object is 0.
What is alloys? write the composition of bronze and brass
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Brass is comprised of copper and zinc. Bronze is comprised of copper and tin.
An alloy is a mixture of 2 or more metals or nonmetals or a metal and a nonmetal. Alloys are made, in order to suit the desired properties, which other metals/nonmetals don't have. Alloys are made by mixing the metal/nonmetal powders or by mixing them in molten state, etc.. Bronze consists of Copper & Tin Brass consists of Copper & Zinc. -----------------------------------------------------(HOPE THIS HELPS)--------------------------------------------