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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

What is the weight of a 42 kg object if the object was on the moon where g is always 1.6 ms?

The mass of an object does not depend on gravitational pull. Their mass would still be 42 g on the moon.

(By the way, that's one small person, with the mass of about 3 empty soda cans...)

What is the movement of heat through outer space?

Heat in outer space is primarily transferred through radiation, as there is no medium like air or water for conduction or convection. Objects in space will emit thermal radiation in the form of electromagnetic waves to transfer heat energy. Without a medium to conduct heat, radiation becomes the dominant method for transferring heat across space.

What cool things could happen in the year 2020?

In 2020, we could see advancements in technology such as the popularization of 5G networks, more progress in artificial intelligence, and potentially breakthroughs in renewable energy solutions. Additionally, there may be significant developments in space exploration and scientific discoveries.

Where does the bus for chestnut pick us up?

The bus for Chestnut picks up passengers at the designated bus stop located on Main Street, near the corner of Elm Avenue. You can refer to the schedule or contact the bus company for specific information on pick-up locations and times.

A hypothesized way to travel between stars without waiting for thousands of years?

One hypothesis is the concept of warp drive, which involves bending spacetime to enable faster-than-light travel. Another idea is using wormholes to create shortcuts through spacetime. Both methods are currently purely theoretical and would require a deep understanding of physics that we do not yet possess.

When does a forming star become stable?

A forming star becomes stable when it reaches a balance between the inward force of gravity and the outward force generated by nuclear fusion in its core. This balance allows the star to maintain a stable size and temperature for a prolonged period of time, during which it enters the main sequence phase of its life cycle.

What are the answers to the chemistry review and reinforcement worksheets?

When students try to obtain the answers to the chemistry review and reinforcement worksheets online they will not find them. These are not online, so students will need to review study materials.

Maximum Sun light is reflected by ocean water than by glaciers?

Ocean water appears lighter in color and reflects more sunlight compared to glaciers, which are usually covered in darker debris and absorb more sunlight. This difference in reflectivity is due to the varying properties of the two surfaces, with water having a higher albedo (reflectivity) compared to ice and snow.

Does black absorb the most sunlight?

Yes, black objects absorb the most sunlight as they absorb all colors in the visible light spectrum. This absorption helps to convert sunlight into heat energy. White objects, on the other hand, reflect most of the sunlight, making them appear cooler.

What is every months gem stone?

January February March Garnet * Friendship * Loyalty Amethyst * Sincerity * Security Aquamarine * Love * Hope April May JuneDiamond * Love * Strength Emerald * Faith * Courage Pearl * Tranquility * Longevity July AugustSeptember Ruby * Success * Devotion Peridot * Fame * Dignity Sapphire * Purity * Mercy OctoberNovember December Opal * Happiness * Truth Topaz * Fidelity * Good luck Turquoise * Prosperity * Happiness

How does the earth cool down during night?

At night, the Earth cools down by radiation as heat from the surface is emitted into the atmosphere. This radiation escapes into space, causing the temperature to drop. Clear skies with low humidity allow for more efficient cooling because there are fewer clouds and water vapor to trap the heat at the surface.

What considered the oldest medical science?

Ayurveda is considered the oldest medical science, originating in India over 5000 years ago. It focuses on holistic health and the balance between mind, body, and spirit through diet, herbal remedies, yoga, and meditation.

Is wire a natural resource?

Yes, wire is typically made from natural resources such as metals like copper or aluminum that are extracted from the earth. These metals are refined and processed to create wires that are used in various applications.

How many rings does jupter have?

There are 4 main parts to the rings of Jupiter. The Jovian ring system is faint and consists mainly of dust. It has four main components: a thick inner torus of particles known as the "halo ring"; a relatively bright, exceptionally thin "main ring"; and two wide, thick and faint outer "gossamer rings", named for the moons of whose material they are composed: Amalthea and Thebe.

What are 3 equations used in science classes with at least 3 variables?

Ideal Gas Law:

PV=nRT

Pressure

Volume

Number of moles

R-> ideal gas constant 8.314 8.314 J/mol*K

Temperature

Law of Partial Pressures

Ptotal=Pa+Pb+Pc+...

Black Hole Entropy (Stephen Hawking)

Where is anti gravity point in the world?

There is no known "anti-gravity" point on Earth. Gravity is a fundamental force that acts uniformly across the planet. Any perception of reduced gravity in specific locations, such as the famous "Gravity Hill" optical illusion, is due to visual or perceptual tricks rather than actual changes in gravity.

How far can the eye see a candle burning?

The average human can see a candlelight up to approximately a mile away.

Why is lower part of ship painted regularly?

The lower part of a ship is painted regularly to prevent corrosion from seawater and marine organisms. The paint acts as a protective barrier, preventing rust and damage to the hull of the ship, which can compromise its structural integrity. Regular maintenance also helps improve the ship's performance and fuel efficiency.

Why does th surface of limestone crumble when heated?

The surface of limestone crumbles when heated because heat causes the moisture and other volatiles in the limestone to evaporate rapidly, leading to a process known as thermal spalling. This rapid evaporation creates pressure within the limestone, leading to the breakdown of its structure and causing it to crumble.

Where can you publish a theory?

If you have a theory to publish, it must first go through peer review. Peer reviews are people who are facile in the subject, and are able to appreciate what you have done.

If they think you have a theory to publish, they will suggest/invite you to have it poublished in a 'learned journal' of a Learned Socity.

The Learned Society will publish if their own reviewers think it is a valid thoery.

Once published, the theory is then open to world wide access. Where other people may accept or question the theory .

As a general rule the reviewers are University Professors, who will review independently, and/or work for the Leanred Socity .

Here's a question to theorise over. ' What is the Square Root of minus one?'

Can you make an artificial sun if sun dies?

Creating an artificial sun is currently beyond our technological capabilities. If the sun were to die, experts believe that other forms of energy generation and survival strategies would be needed to sustain life on Earth.

What are some examples of natural defenses?

Examples of natural defenses in living organisms include the immune system, physical barriers like skin and mucous membranes, detoxifying enzymes in the liver, and the ability to generate heat or fevers to fight off infections. In plants, natural defenses can include thorns, toxins, and chemicals that repel pests or pathogens.

What is happening when your eyes distinguish an object as having a certain visual color?

Your eyes perceive color as flags. There are chemical tubes in the eye that contain flags for the color that you see around you. For example when you see a blue ball your eyes pick up the color blue via the chemical tubes. The chemical tubes entrusted with capturing the color blue "flash" and send signals to the brain which the brain intreprets as being blue. While this occures the chemical within the tube deplets, the amount of depleted chemical marks the intensity of the color in terms of brightness. So if it were a very bright, shining blue then the chemical withing the tubes deplets more and signals the brain to intrepret the ball to be very shiny. Thus this explains why you temporarily become blind when you look into the sun. When you look into the sun, the light coming from the sun is white meaning it has all of the colors of the visible spectrum, thus all of the chemical tubes become active in the eye, and since the sun burns with a great intensity, the chemical within thse tubes deplete very quickly and completely, hence in one sense your are not technically blind but are actually seeing every color of the spectrum at the same time. Then in a couple of minutes, while looking away from the sun, the chemicals in the tubes return and once again you can see.

If gravity dominates the expansion of the universe what would happen to the universe?

If gravity dominated the expansion of the universe, the universe would eventually stop expanding and begin to contract. This would lead to a "Big Crunch" scenario where all matter in the universe collapses back into a hot, dense state.