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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.

686,985 Questions

How long are harp strings?

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it depends on how big the harp is.

Centripetal and centrifugal forces in Europe?

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You question isn't very clear but I'll assume you are interested in the definitions of centripetal and centrifugal forces.

Centripetal Force: Force on an object that pushes into a curved path

Centrifugal Force: Force exerted by an object that is being forced to follow a curved path

If you are on a merry-go-round holding onto a pole the pole exerts a centripetal forces on your hands that keeps you from flying off the edge. You exert a centrifugal force on the pole due to your mass and the acceleration you are undergoing due to your circular path. These forces are in equal and opposite directions as long as you hold on. If you let go both forces disappear and you travel in a straight line. However the pole you were holding travels in a curved path so from your perspective you are being flung off the ride.

In Europe the units of force would be Newtons while anti metric zealots elsewhere might use slugs or pounds force.

If you are referring to centripetal and centrifugal forces due to the earths rotation then the centripetal force is the portion of gravity acting on you that is needed to keep you from flying off into space due to your circular path on the surface of a rotating globe. The centrifugal force reduces the force you exert on the earth. It's equal to your weight on earth minus your weight on an equivalent sized earth that isn't rotating (you'd be a bit heavier in the later case). The magnitude of this effect in Europe wold depend on your exact latitude and altitude since these would determine your distance from the earth rotational axis and thus your rate of angular acceleration.

How fast is the rotation of the earth?

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The earth spins at approx 1000 mile per hour.

This is quite simple to calculate - the circumference of the planet is 24000 miles approx - and there are 24 hours in a day.

What are seven valuable resources?

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The seven valuable recources are: 1. Sophie Green 2. Emily Gray 3. Holly Rave 4. Jamaican Tash 5. Heather Purdie 6. Vanessa Fountain 7. Me

How do eyes foucus?

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Eyes are able to focus when the Ciliary muscles attached to the lens adjust itself. They adjust itself so that the curvature of the lens varies according to where the light rays are coming from, so that it hits the retina properly to form a clear image.

How does force affect the motion and speed of an object?

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As Newton's laws state, the greater the force, the more an object will accelerate or slow down. The force in the opposite direction of motion is called friction. So if you have a 3Kg block travelling at 2m/s, with a friction of 1m/s you will need at least 5N to keep it going. The more force you apply, the faster the block will travel, so it accelerates. The less force you apply the more it slows down and eventually stops because the friction is greater than the force applied. An object that travels in a uniform direction at a uniform speed (Newtons 1st law) will continue traveling in the same way and in the same direction (inertia) unless acted upon by a resultant force (friction).

A beam of light is made from how many lights?

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the question is phrased poorly, but i think the answer is seven, as in white light is split into seven different wavelengths when passed through a prism.

What is 23824100?

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23824100 = 23,824,100

What material will be the best to make a rope?

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the best material to make a rope is the spider web.

What is thePressure of gravity fed water tanks?

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Measure the vertical distance from the top of the water in the tank to the point of use. Multiply that distance by 0.44 to get the answer in psi.

Example: if the top of the tank is 20 feet above the point of use, the water pressure at the point of use will be 8.8 psi.

Note, this does not account for friction losses in the pipe. If the pipe runs a long distance from the tank to the point of use, there will be pressure losses in the pipe, especially if the pipe is a small diameter. The larger diameter, the less those pressure losses will be.

Scientific discoveries in australia?

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the world is upsidedown. A2. Well, the world is right way up, it is the sky (and stars) that are inverted. When the left half of the moon is bright as seen in the northern hemisphere, in the southern hemisphere it will be the right half that is bright

Green house effect to the environment?

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Greenhouse gases are very insulating, so when they float up to the atmosphere, they insulate the world. Sunlight and heat goes in through them, but more goes in than goes out. So gradually all the heat is being built up in the world. They are called greenhouse gases because they have the same effect on the Earth that a greenhouse has on the plants inside: it lets heat in but not out.

This is what is causing global warming.

What are some of the disadvantages of traditional farming?

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you might not get all the profit when people buy it at the shop

At what rate of simple interest per annum an amount will be doubled in 10 years?

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At approximately 7.9% a sum will double itself in 10 years.

For rough mental arithmetic, there is a 'rule of 70' for doubling of an investment. Divide the number 70 by the time period. e.g. 70 / 10 in the example given. Works reasonably well for small interest rates.

What makes air a mixture?

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air is not a mixture. it is a compound. it is made up of 1 oxygen atom nd 2 hydrogen atoms

How does a backbone that can bend help an animal move?

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Without a backbone that can bend, you would never be able to tie your shoelaces.

What is the Adjective of mood?

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Emotional. Or moody.

Should science be directed?

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This question is too broad to be answered. Can you elaborate a little? For example, you might mean: Should government-funded researchers be held accountable? or Should medical trial research be conducted and evaluated by completely disinterested parties? or you might mean: Should scientific research be conducted under the direction of a religious authority?

What are the two types of motion according to direction?

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linear - designated by v

cyclic - designated by w