Science Experiments

No, there is too much atmospheric drag at these heights for a satellite to maintain an orbit, but it is too high for airplanes which have 'air breathing' engines. Some high altitude planes such as the SR-71 Blackbird and U2 can fly up to 25km, but not as high as 50km which is the lower boundary for the Mesosphere. Some experimental rocket planes such as the X-15 have been able reach these heights.

Animals with a segmented body plan belong to the phyla Arthropoda, Annelida, and Chordata. Segmentation involves the repetition of body units along the length of the organism, which can be seen in arthropods with their jointed limbs, annelids with their repeated segments, and chordates during embryonic development.

Eratosthenes calculated the Earth's circumference by measuring shadows at two different locations at the same time. He then used the angles of the shadows cast by a vertical stick to calculate the Earth's circumference using geometry and trigonometry. By comparing the shadow angles at two different locations, Eratosthenes was able to estimate the Earth's size accurately.

When you hold a spiral paper over a lit candle, the heat causes the air within the spiral to rise, creating a mini updraft that makes the spiral rotate. The rotation is caused by the temperature difference between the inside and outside of the spiral paper.

Yes, you can run faster on the moon because the moon's gravitational pull is weaker than Earth's. This means you would weigh less on the moon and could move more easily. However, it is important to note that the moon's surface is rocky and uneven, which can affect your running speed.

I never heard of a fifth kind of matter, I only know the 3 basic ones and the 4th one.

-Solid

-Liquid

-Gas

-Plasma

Unless you meant to hit 4 instead of 5, You are trippin' imo :)

2nd Answer:

The 'missing' kind of matter is 'filament or filamental matter'. This is similar to plasma, but the molecules travel only in one direction, even if that is away from a center of gravity.

Benzene is a stable aromatic compound with a delocalized ring of electrons. Its structure does not readily allow for addition reactions, which are necessary for polymerization to occur. The electron density in benzene is evenly distributed around the ring, making it difficult for monomers to add to the benzene structure in a way that would initiate polymerization.

Yes, the rock at the edge of the 600m high cliff has more potential energy than the rock at the edge of the 200m high cliff. Potential energy is directly proportional to the height, so the higher the cliff, the more potential energy the rock has.

In the Geiger and Marsden experiment, alpha particles were fired at a thin gold foil. They observed that while most alpha particles passed straight through, some were deflected at large angles and even back towards the source. This led to the conclusion that the majority of the atom's mass is concentrated in a small, positively charged nucleus, causing the deflections.

Clouds form when warm, moist air rises and cools, causing water vapor to condense into liquid droplets. The two requirements for this process are moisture in the air and a decrease in temperature to reach the dew point where condensation can occur.

Scientists can predict tides in advance using mathematical models based on the gravitational interaction between the Earth, the moon, and the sun. By understanding the positions and motions of these bodies, scientists can accurately forecast the height and timing of tides in a given location.

Electromagnetic waves transfer energy through oscillating electric and magnetic fields. This transfer occurs through a vacuum because they do not require a medium for propagation. Examples of electromagnetic waves include light, radio waves, microwaves, and X-rays.

Centrifugal forces generated by the Earth's rotation cause a bulging effect in the oceans, creating two tidal bulges on opposite sides of the planet. This, combined with the gravitational forces from the Moon and Sun, leads to the formation of tides. The interplay between gravitational and centrifugal forces influences the timing and height of tides.

You are confused between speed of sound and pitch. The speed of sound will remain constant at specific temperature and the medium. Since 256 Hz is a higher pitch, it will be shriller.

Hope that helps :D

In a process involving a semi-permeable membrane, substances are separated based on their size and solubility. This membrane allows only certain molecules or ions to pass through while blocking others. This method is commonly used in processes like reverse osmosis and dialysis for purification and separation purposes.

Another contributor wrote:

Humans are polluting the environment and causing damage to natural ecosystems by things such as deforestation and air pollution. Human activities are mainly disrupting natural cycles such as the carbon cycle. Humans are emitting extra extra carbon dioxide into the air and cutting down trees that absorb carbon dioxide and emit oxygen. So basically the earth had a stable biosphere right up until the industrial revolution. That's when people started using more machines. The environment has a very delicate balance, after the industrial revolution people started using more resources, producing more waste, damaging the air and water and overall disrupting the balance of the environment. Though unfortunately this wasn't realized until recent times. Scientists are working on ways to help protect the environment but they still have a long way to go. And also a lot of big companies and powerful people don't want to use a lot of today's alternatives because they are worried about loss of money and power.

The Population I group of stars

The sector of the streak plate closest to the original inoculation point most often shows confluent growth because bacteria from the original inoculum have had more time to multiply and cover the surface in that area.

-- There would be no light, except the light from the stars.

-- There would be no day, night, or seasons.

-- The temperature on Earth would be about 400 degrees below zero.

Everywhere. All the time.

-- That means there would be no plants, liquid water, air, birds, bugs,

animals, or people here.

it's called areodynamics. When you throw it, the nose evens out the air on the top and bottom of the plane.

It depends on the location and time of year.

The burning of natural gas involves a chemical reaction known as combustion. This exothermic reaction involves the natural gas (mostly methane) combining with oxygen from the air to produce carbon dioxide, water vapor, and heat energy.

it isn't correct to say it rises or falls. A better way to ask the question is: "Why do hot things (like hot air) rise above cold things (like cold air)?"

To answer this question, it is important to understand what heat is.

Heat is energy. When we say something is hot, we really are saying it has a lot of stored

energy.What does this energy do?

Matter is made up of incredibly small pieces called atoms and molecules. Atoms and molecules are always moving.

The more energy these atoms and molecules have, the faster they move. The faster they mover, the more space they take up.

If something is hot, it weighs the same as if it were cold, but it just takes up more space.

This leads us to the concept of density. Because hat air takes up more space than cold air, hot air has a smaller density. Less dense hot air will "float" above the more dense cold air.

The sun is a yellow dwarf star. Its color, temperature, and size classify it as such compared to other types of stars.

Alhena, more commonly referred to as Gamma Geminorum (or simply HR 2421 in the Bright Star Catalogue) is approximately 105 light years (32 parsecs) from Earth.