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Science

The observation, identification, description, experimental investigation, and theoretical explanation of phenomena is all part of science. Nothing is immune to the scientific process: from charm quarks that haven't existed naturally since the beginning of time to Pluto, recently demoted from planet to dwarf planet. Questions on knowledge about the material and physical aspects of our world are asked and answered here.

203,801 Questions

How long for earth to go round sun?

365.26 days

The 0.26 day difference between the normal 365-day year is accounted for by adding an extra day each leap year.

Why do planes fly at very high altitudes?

Planes fly at high altitudes to benefit from thinner air, which reduces air resistance and drag. This allows planes to fly more efficiently, saving fuel and increasing speed. High altitudes also provide more stable air currents, resulting in a smoother ride for passengers.

What is a list of things that happens at midnight?

At midnight, some common occurrences include the start of a new day, the changing of date, possible fireworks or celebrations, people sleeping or resting, and some cultures believe it's the time when supernatural events are more likely to occur.

True or false. A concave lens usually produces real images?

False. A concave lens usually produces virtual images. Concave lenses cause light rays to diverge, so the image formed is located behind the lens and cannot be projected onto a screen.

What material should have high electro magnetic property?

Materials such as iron, cobalt, nickel, and certain alloys containing these elements are known for their high electromagnetic properties. These materials are often used in the production of magnets and electromagnetic devices due to their ability to retain magnetization effectively.

Why does a film artist use a concave mirror when applying make up?

A film artist uses a concave mirror when applying makeup because when the face of the person is placed between the pole and focus of the concave mirror, an erect, virtual and highly magnified image is formed, which is important for the artist when applying makeup. For the same reason, a concave mirror is used while shaving too.

Suggest some possible reasons why there are fewer births on weekends?

One reason for fewer births on weekends could be that scheduled inductions and cesarean sections are less likely to be performed over the weekend unless medically necessary. Additionally, medical staff availability, especially obstetricians and nurses, may be limited on weekends, leading to fewer deliveries. Finally, expectant mothers may be more likely to try to hold off going into labor until the following week for convenience or to avoid disruptions in their plans.

What are the Chances of seeing life on other planets?

The chances of finding life on other planets depend on various factors, such as the presence of water, suitable environmental conditions, and the possibility of organic molecules. While we have not found definitive evidence of life beyond Earth yet, ongoing research and exploration increase our understanding of the potential for life elsewhere in the universe.

How do you hoot with your hands?

Start off by using your palm wrapped round the opposite armpit, (skin to skin) and flex your arm up and down. Now you have an idea of the causative effect, transfer the demonstration to your palms. Is this what you wanted?

Why toilet windows of modern house are made of translucent glasses?

Toilet windows in modern houses are often made of translucent glass to provide privacy while still allowing natural light to enter the space. This helps to create a bright and airy atmosphere in the bathroom, without compromising on the privacy of the individuals using it. Additionally, translucent glass allows for better ventilation in the bathroom while maintaining a sense of openness.

What absorbs or reflects energy from the sun in the atmosphere?

Gases like water vapor, carbon dioxide, and ozone in the atmosphere can absorb and reflect energy from the sun. Particulate matter, such as dust and pollution, can also play a role in absorbing or reflecting solar energy in the atmosphere.

How did space shuttle Columbia get to launch pad in 1981?

Nasa has two big vehicles called crawlers: the shuttle gets lifted vertically onto the top of these crawlers, attached to the other rockets, then the crawler 'crawls' to the launch "site" where takeoff happens. so technically, the launch "pad" is the top of the crawler, so the shuttle got to the "pad" on a crane, but got to the launch "site" on top of the nasa crawler.

Do blind people have control of their eyes?

Yes, blind people may still have some limited control over their eye movements, but their ability to see is either significantly impaired or absent. Their eye movements may occur in response to sounds or other sensory stimuli.

Does passing wind when in a spacesuit damage the suit?

no it dosent although peeing in the suit without the proper underwear will damage the suit(that is true somtimes when they go out of the ship for a long time they just wear these paints whitch the can carry human waist

How may the Earth's position in space be related to the cycle of extinctions earth?

The Earth's position in space and its movement through the galaxy can impact the planet's exposure to cosmic events, such as asteroid impacts or fluctuations in extraterrestrial radiation. These events have been suggested as potential factors in past extinction events on Earth by affecting the planet's climate or causing catastrophic changes to the environment.

What planits are made of gas?

Gas giant planets, such as Jupiter and Saturn, are primarily made of hydrogen and helium gases. These planets have thick atmospheres composed mainly of these gases, with solid cores deep in their interiors.

What are the advantages of convex mirror?

Convex mirrors provide a wider field of view compared to flat or concave mirrors, making them ideal for use as side-view mirrors in vehicles. They also produce virtual images that make objects appear smaller and further away than they actually are, which can be beneficial for surveillance and security purposes. Additionally, convex mirrors are less prone to damage and are less likely to break compared to flat or concave mirrors due to their curved shape.

What are the advantages of a convex mirror?

  • They can be used in stores for the clerks to watch for thiefs
  • In cars as side mirrors to prevent accidents in blind spot
I could only think of two but I hope they help!!

Is there anything that is fundamentally unknowable?

Yes. What happens when someone else jumps into a black hole.

There is still no scientifically positive proof for the "Big Bang " , so it is unknowable for the day .But tomorrow is another day.

Why is the sky endless?

That almost becomes a philosophical question depending on what you define as "sky" and what you define as "endless"

Consider, what is the sky? Is it simply the area that we perceive as being above the horizon? Is it our atmosphere? Is it space?

One might argue that that since we consider it "the sky" when we see it's colourful shades during the day, and we also consider it "the sky" when we see the infinite depths of space at night, then the sky must not be a tangible entity but simply a region of our perception.

In that case, then the answer might be no. The sky has boundaries then, as it ends at the horizon. In that case, the sky might be thought of as an enclosed circle.

But wait - that's only if you consider the perimeter of the sky. If you consider it's depth as we perceive it then the sky is limited during the day, when all we can see is the blue haze of the nitrogen in our atmosphere, but limitless at night, when we can see in to the depths of space.

Even then though you might have a contradiction. Can we really see infinitely into the depths of space? Is space itself truly endless? Here we move into questions whose answers no-one really knows.

What different kinds of storms is there?

Some common types of storms include thunderstorms, hurricanes, tornadoes, blizzards, and dust storms. Each type of storm has unique characteristics and can have varying levels of intensity and impact on the environment.

Why microscope produces inverted image?

The reason a microscope produces an inverted image is simply due to the number of lenses within it, or more specifically, the number of focal points it has. A microscope with a single lens will have a single focal point. Each focal point will invert the image once, meaning that a microscope with a single lens will produce an inverted image. If you were to add another lens to the microscope and align it the proper distance from the first lens, it would be possible to reorient the image to be right side up. As a side note, our eyes work the same way, the images coming into our eyes are inverted by our own lenses, its up to our brain to flip things right side up.

Chemists whose specialty is determining the composition of chemicals work in the field of?

If this is a homework question, your teacher should be ashamed.

The answer is probably supposed to be "analytical chemistry." However, organic chemists, inorganic chemists, physical chemists and biochemists all might do this to some extent, so really a better answer would just be "chemistry" and even that might be too narrow.