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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 simple machine starts with L?

Well, honey, the simple machine that starts with an L is a lever. It's basically a long stick that you use to lift stuff with less effort. So, next time you need some extra muscle power, just grab yourself a good ol' lever and get to work!

Why does the jumper feel heavier after it is washed?

When a jumper (sweater) is washed, it absorbs water which adds weight to the garment. The water molecules fill the spaces in the fabric, increasing the overall mass of the jumper. Additionally, wet fabric tends to cling closer to the body, giving the sensation of heaviness as it is worn.

What is the scientific name of buttocks?

Well, darling, the scientific term for buttocks is the gluteus maximus. That's just a fancy way of saying "booty" in Latin. So next time someone asks about your gluteus maximus, just give them a little wiggle and a wink.

Is oxygen is the harmful or useful gas?

Oxygen is a vital gas necessary for human and animal survival. It is used by cells in the body to produce energy. However, excessive exposure to pure oxygen can be harmful and toxic, leading to lung damage or even fire hazards in certain conditions.

Are sound waves a transverse wave?

No, sound waves are longitudinal waves, meaning that the particles of the medium move parallel to the direction of the wave propagation. Transverse waves have particles that move perpendicular to the direction of wave propagation.

What is the density of water in fps system?

The density of water in the fps system (feet-pound-second) is approximately 62.4 pounds per cubic foot. This value is commonly used in engineering and physics calculations where the fps system is employed. It is important to note that the density of water can vary slightly depending on temperature and pressure conditions.

How do you detonate C4?

Composition C-4 is an insensitive plastic explosive. Insensitive means that it must be subjected to a high energy shock wave (physical shock, not electrical) in order for it to detonate. That shock is provided by a high energy blasting cap. Ordinary levels of impact, such as being dropped, thrown, kicked, or even struck by a fired bullet will not cause C-4 to detonate under normal conditions.

Is CO2 a nonelectrolyte?

Yes, CO2 is considered a nonelectrolyte as it does not dissociate into ions in solution. It remains as a covalent molecule.

How does air turn into liquid?

Well, isn't that just a happy little question! When air gets really cold, it can condense into a liquid. Just like when you're painting a beautiful winter scene, the cold air causes the water vapor in the air to come together and form tiny droplets that we see as liquid. It's like nature's own magic trick, creating a peaceful and serene transformation from gas to liquid.

Where are 3 places in which you can find fresh water?

Fresh water can be found in various locations on Earth, including rivers, lakes, and groundwater reservoirs such as aquifers. Rivers are bodies of flowing fresh water that typically originate from springs or melting snow. Lakes are large bodies of standing fresh water that can be natural or man-made. Groundwater reservoirs, such as aquifers, are underground layers of permeable rock or sediment that store and transmit fresh water.

Why are the flames different colors when burning a log?

a different color flame, will indicate the different levels of oxygen intake of the flame. when the flame is blue, it indicates that the flame has a very low amount of O2 in the gas which is trying to burn. And when the flame is RED, means that there is more oxygen available when it is burnt.

What did the moon look like 3 nights ago?

Find the answer in your local almanac, due to the fact I don't know your time or location.

How long is the day and night on Mars?

because mars is quite close to the sun and it rotates to;so it allows there to be day and night on mars:)

hope i helped

Edit: Mars has a solar day (24 hours on Earth) of about 24 hours and 39 minutes. If night and daytime were of equal length that would give a night of

about 12 hours and 20 minutes.

However there's a lot of variation, just as there is on Earth. It depends on the

seasons and the latitude mainly. Mars is quite like Earth in its axial tilt, but its "year" is nearly twice as long. So the seasons will be similar, but longer.

How many siblings did Alfred Adler have?

Oh, let's paint a happy little picture of Alfred Adler's family. He had three siblings - two brothers and a sister. Each sibling added their own unique color to the canvas of Adler's life, creating a beautiful and diverse family portrait. Just like in art, each member of his family played an important role in shaping who he became.

What is a word for a change in the position or place of something?

The word for a change in the position or place of something is "displacement." In physics, displacement refers to the vector quantity that represents the change in position of an object, typically measured from its initial position to its final position. It is a crucial concept in understanding motion and calculating distance traveled.

Who is the killer in problem solving activity untrue confessions?

I have 3 suspects based on my observation and hypothesis

Suspects: Gerald McNutt, Leopold Looney and Griselda Cracklin

Gerald McNutt said: "I snatched on of his bowling trophies from the wall and brought it down on his head." but there is no blood on his chair nor head and the trophy is back on its place and place like nothing is happen

Leopold Looney said: "I'd grabbed the globe-shaped paper weight form the desk and kill him." but there is no blood on his chair nor head either and the globe like shape has no blood stains and it is back were its place before the murder happen

and i think the real suspect is Griselda Cracklin. why?

because he strangled the victim using his scarf and burned it

and i think 2 to 4 hits can cause brain damage and severe bleeding on it

and the 2 suspects that i said there weapon to kills is place back and it had no blood stains and the victims body is sit like its someone strangled him from behind

How far would a car travel in 4 seconds at a speed of 45 km per hour?

Oh, dude, let me break it down for you. So, if a car is going 45 km per hour, that means it's covering 45 kilometers in an hour, right? So in 4 seconds, it would cover a fraction of that distance, which is like... umm... a quarter of a minute? Yeah, let's go with that. So, in 4 seconds, the car would travel about 50 meters. Cool, right?

Example of reversed word?

A palindrome

e.g. DAD or ABBA.

What if clothes are made of metal?

i think it is hard and heavy so its hard to wear

What is ethane's hydrocarbon formula?

The hydrocarbon formula of the chemical ethane is C2H6.

Why does the density of a substance not change with the sample size?

Density is an intrinsic property of a substance that is based on its mass and volume. Regardless of the size of the sample, the mass and volume will change proportionally, resulting in a constant density. This is because density is a ratio of mass to volume, so as long as the substance remains the same, its density will not change with sample size.

How do I mix 1 Quart in a 20 parts water 1 part chlorine bleach?

To mix 1 quart of chlorine bleach with a ratio of 20 parts water to 1 part bleach, you would need to measure out 1/20th of a quart of bleach (which is approximately 1.6 fluid ounces) and mix it with 19.2 ounces of water. Make sure to use proper measuring tools and protective gear as bleach is a strong chemical.

Is cutting snowflakes out of paper a physical change?

Papermaking is not one single unit operation but a series of operations some of them such as pulping and bleaching etc. are chemical change while sheet formation, pressing, drying etc. are physical change.

How is a massive star's stage 4 different than an average star's stage 4?

In the context of stellar evolution, a massive star's stage 4, also known as the red supergiant phase, differs from an average star's stage 4, which is the red giant phase, primarily in terms of mass and size. Massive stars have significantly higher mass compared to average stars, leading to more intense nuclear fusion reactions and the production of heavier elements in their cores. This results in a more rapid evolution and ultimately a more violent end stage, such as a supernova or even a black hole formation, compared to the relatively peaceful fate of an average star, which typically ends as a white dwarf.