answersLogoWhite

0

🧪

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

Who was the crew of Apollo 5?

From what I read, it was an unmanned mission.

Who was the crew of Apollo 4?

The crew of Apollo 4 was made up of all Navy captains: Command Module Pilot Walter M. Schirra, Jr., Senior Pilot Donn F. Eisele, and Lunar Module Pilot R. Walter Cunningham. Apollo 4 was an unmanned mission that tested the Saturn V rocket and the spacecraft systems in Earth's orbit.

When a satellite is in orbit. Why does it follow a curved path?

The gravitational pull is causing the satellite to orbit around because the pull is the same all the way around. If it ever managed to leave the gravitational pull, it would just wander pretty aimlessly and even then it would go in a straight line.

Hope this helps!

Comment: In more "scientific" words :

1. The satellite has a velocity that is along the line of its orbit ( in other words "tangential" to the orbit, at any instant).

2. The planet, that the satellite orbits, is trying to pull the satellite in the direction of the planet.

3. The combination of these things results in the curved path. The satellite is constantly being diverted from its direction at a tangent to the orbit by gravity.

Is a bathroom window translucent?

It depends on the type of window. Some bathroom windows are clear, while others may be frosted or tinted for privacy.

What is antumbra?

The antumbra is the region of a shadow that is partially shaded and partially illuminated by a light source, such as during a solar eclipse when the moon does not entirely cover the sun. It is the area where the light source is not completely blocked, creating a dimmer shadow than the umbra.

What elements of science fiction are there in the city of ember?

Well first of all there are 6 elements of science fiction; Fantastic object (a special object), special characters (weird or different characters like aliens in some books) , Heroism (a hero like Hercules), Good versus evil, magic (like wizards) and something else that i can't think of right now.

There are only two elements in the story; heroism and fantastic object. The fantastic object is the instructions that help Lina and Doon on the little journey. Heroism accourred at the ended when they found the new place.

I'm in fifth grade and I know this stuff. I'm not trying to be mean but some people are just ignorant and might need to go back to school to learn this crap again.

Why there is a smoke seen inside the airplanes?

Presuming that the phenomenon is not actually real smoke, Inside an aeroplane, if for some reason the air pressure reduces, then the some of the water vapour in the air will condense into droplet form. This may be alarming, but is in itself no cause for concern.

What is space elevator used for?

Answer 1.

It WOULD be a device that could lift objects from the surface of the Earth up into Earth orbit without the use of rockets.

Answer 2.

Caveat lector: What is described in "Answer 1" by a previous contributor is a misconception.

The Space Elevator (SE), -- as is proposed by Brad Edwards, which is also known as the "Centrifugally Extended Carbon-Nanotube Tether Space Elevator" and like any of the others proposed systems, -- can only provide for a method to vertically reach a particular altitude relative to sea-level. But it DOES NOT provide a method for the tangential (i.e. the horizontal speed,) for orbital insertion, (i.e. the only angular acceleration that the tether can inject to the payload mass being carried is the angular acceleration that the tether itself has at the altitude in question, which is also the same angular acceleration of our planet).

What the above means is that overtime any object released from the tether at any altitude below the Geostationary Orbit (i.e. the altitude at which the center of gravity of the elevator system will be,) would eventually fall back to Earth's surface. For example; If the mass is released at the operational altitude of the ISS it will pretty much fall back to Earth almost vertically.

Any space elevator, (as for example a SpaceShaft,) is nothing more than a device used to eliminate the need of a rocket's 1st stage in reaching an altitude in which tangential velocities are to be reached by means of propulsion systems. Moreover, even if a satellite is intended for GEO insertion; it will still need to have some on-board propulsion system to at least get away from the elevator's car, (or climber,) and neighboring surroundings of the tether or SE station, which is pretty much as what a rocket's 2nd stage has to do.

Another important factor to further illustrate the mechanics of the popular Edwardian system is the importance of the release of any cargo, including satellites, at GEO. If a propulsion system is ignited while still being held at a required altitude other than GEO or above will put the tether under stress and a consequential deflection which might destabilize the system. N.b. if just one such events does not cause the described consequence, after a number of such activities will certainly destabilize the system.

The requirement of reaching a GEO altitude has other consequences which are related to orbital mechanics. What this means is that a significant amount of fuel will still be needed for the relocation of satellites intended for orbits other than GEO, e.g. anything intended for the ISS will need to travel all the way from GEO down back to the orbit at which the ISS may be, being anywhere between 200 km up to 400 km of altitude. Compare these distances with the distance from sea-level up to GEO which is at 35,786 km (22,000 mi), and this is the minimum possible altitude and not the desired altitude, (see Wikipedia's article about GEO).

So after the extended descriptions I have given above we can redefine the popular belief to:

  1. A system to ELIMINATE THE NEED OF THE 1ST STAGE OF A ROCKET and
  2. for the ASSISTED ORBITAL INSERTION of spacecrafts by providing some free-ride speed.

What are the five characteristics shared by all worms?

  1. Worms are multicellular organisms with elongated bodies.
  2. They lack limbs and skeletons, instead using muscles to move.
  3. Worms are cold-blooded, meaning they rely on their environment to regulate body temperature.
  4. They exhibit bilateral symmetry, with bodies divided into similar halves.
  5. Most worms have reproductive systems that allow for sexual reproduction.

What time will the rapture start?

The timing of the rapture, according to various religious beliefs, is not definitively known or can be predicted. It is often described as a moment when believers will be taken up to heaven, but the exact time is considered to be known only by God.

What is the first way a scientist displays data?

A scientist record the data in a table which displays it in a clear and readable format. Then they usually convert this into any sort of graph which allows them to compare the data. Graphs can include scatter graphs, line graphs, bar charts and pie charts, all of which depend on the data you are studying, hope that helped :)

What is outer space also know as?

Outer space is also known as the universe aka a word used in space science.

Who found the first nebula?

It was found by a German man named Seemore Butts. He had a hairy face and chest and butt.

Why does space probe need very little fuel?

In space there is no friction, so once the space craft gets moving it will stay in motion until it runs into something. The lack or resistance (friction) means it doesn't have to keep pushing to continue moving. It only needs enough fuel to get it up to speed then it will continue on by itself.

What makes the flame of the tirrill burner luminous?

Luminous flames are formed when the energy released is at a certain part of the electromagnetic spectrum. A red flame is given off when the energy is at the same energy and wavelength of red light. A yellow sooty flame is much lower energy and caused by a lack of oxygen.

Burning fuels produce heat. Heated atoms and/or molecules emit a photon as they return to a lower energy state.

Look at various flames, You may see concentric areas that are like layers, each one a different color. The fuel breaks up or is oxidized differently in each layer and each has a distinct temperature and chemical makeup.

Not all emitted light from a flame is visible, a lot is emitted in the infrared spectrum which we cannot see but will feel as it heats our skin. Some flames are totally invisible, like from hydrogen.

Some emitted light is only at very specific (narrow) frequencies, which we will see as certain colors, light and dark blue from methane premixed with air in a Bunsen burner or stove-top gas range.

Hot carbon atoms emit over a very wide range of frequencies at random, so we see yellow light from candles.

If hot enough, carbon emits a bluish white light, like from acetylene/oxygen.

What 2 words come from old English that relate to the moon?

"Month" and "Monday" are two words that come from Old English and relate to the moon. The Old English word for moon is "mona," which is reflected in both of these words.

What does fushion give the sun?

Fusion in the sun gives off light and heat energy through the process of nuclear reactions. This energy is the result of hydrogen atoms combining to form helium, releasing large amounts of energy in the process.

Is the mass of the solar system concentrated in the sun or in the planet?

The majority of the mass in the solar system is concentrated in the sun, accounting for about 99.86% of the total mass. The planets, including Earth, make up only a small fraction of the solar system's mass.

Why do they use red filters in dark rooms?

Photographic film is not light sensitive to red light ...

2nd Answer:

Actually, that is not true. When you are working with photographic film, any light at ALL will 'fog' the film and ruin your photos.

Photo paper is nowhere near as sensitive to red light as film is, so you can use a red "safe" light so you can see what you're doing as you print, develop, stop, and fix your photo prints. The room lights may be on as you rinse the print.

What is the instrument used for measuring sunlight?

Sunlight is light.The word has been added as the light comes from the sun.

Light is measure in candela as a unit ofmeasurement.

A Lux meter is used to measure light in the unit of candela.

How does radiation from the sun travel through space?

Radiation from the sun travels through space in the form of electromagnetic waves, specifically in the form of visible light, ultraviolet light, and other wavelengths. These waves do not require a medium to propagate and travel through the vacuum of space at the speed of light.

What is kinesology?

Kinesiology is the scientific study of human movement. It examines how muscles, bones, and tissues work together to create movement patterns. Kinesiologists often apply their knowledge in fields such as sports performance, rehabilitation, and fitness.

Can you give examples of zeugma?

  1. He lost his keys and his temper.
  2. She broke his heart and his favorite mug.
  3. He took his hat and his leave.

When our view of an object is blocked by either another object or by the earth's shadow?

The object is said to be in shadow due to being obstructed from direct light. This can occur when an object is blocked by another physical object, or when it falls within the Earth's shadow, known as an eclipse.

How did the planets start?

Planets formed by big rocks pulling in smaller rocks, and gas with their high gravity, and the same with each size of rock......... But that's just one of theories.

The other one is that there was a huge bang that started time and space itself, but if they checked their science their theory is proven to be wrong. But also different religions believe differently on how the planets were made so just keep that in mind.*

*(Yet many theories are still to be proven wrong so many beliefs and theories may not be true.)