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Physics
Physics regards the physical aspects of the natural world. It includes topics that deal with forces on different bodies within the universe and phenomena that explain how the universe works.
Total questions 139600
What would happen if there was no electricity?
Two ways of looking at this: 1. What if electricity didn't exist? Well, the universe literally would not exist as we know it,...
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Do the sun's tanning rays penetrate water and to what degree?
The sun's rays do penetrate water, but each color penetrates to a different extent. The more energetic colors penetrate deeper,...
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Are there any ways to pass through a laser sensor without being detected?
As the question asked about "passing through" a laser sensor, the answer speaks to the breaking of the laser beam. And that's not...
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How does Nikola Tesla's anti-gravity machine work?
Here are opinions and answers from WikiAnswers Contributors: Tesla's anti-gravity machine has nothing to do with gravity....
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Can you see static electricity?
It is very difficult to see any kind of electricity. But you can see the spark as a result of static electricity. This spark is...
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How much does a gallon of ice weigh?
To greatly simplify, a chunk of ice placed in a lab at STP masses roughly 0.92g/ml. If we assume that you are referring to a...
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What are the parts of a Microscope?
fine adjustment knob coarse adjustment knob slit light reflected mirror diaphragm objective lens handle stage...
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How does air pressure affect the bounce of a basketball?
The more air pressure in the ball, the higher the ball will bounce. The less air pressure, the lower the ball will bounce. This...
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What are the names and uses of the various laboratory tools?
Tools include beakers, microscopes, tweezers, hot plates, lasers, volt meters, test tubes, Erlenmeyer flasks, thermometers, test...
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Who invented the microscope?
The first true microscope was made in 1590 in The Netherlands. Hans Lippershey, Zacharias Jansen, and Hans Jenssen, all eyeglass...
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Are cosmic strings subatomic particles or the remnants from the big bang?
Cosmic strings are "theoretical" subatomic particles that are about one billionth of a millimeter in diameter. They are also...
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What are wavefronts?
(Physics) A wavefront is an imaginary surface joining all points in space that are reached at the same instant by a wave...
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What were Albert Einstein's achievements?
Albert Einsteins achievements where the theory of relativity or E=mc2,Brownian motion and more. He would calculate the movement...
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What did Albert Einstein invent?
He was not an inventor.He was a physicist. In the light of the extraordinary success of Newtonian Physics, in the beginning of...
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How does a dynamo work?
The movement of another body is transmitted to a rectangular coil of wire that is inside a U-Shaped magnet. The motion of this...
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What is the weight of the Earth?
Newton showed that, for spherical objects, you can make the simplifying assumption that all of the object's mass is concentrated...
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Why does space exist?
Without "space" we would have no place to "exist". It can also depend on how you look at it and what you believe in, as many...
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How does the elevation and air pressure affect the boiling point of water?
The only factor that determines the boiling point of water at any altitude is the barometric pressure (the altitude itself...
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What is the 'Law of Conservation of Mass or Matter'?
In the law of conservation of mass (or matter), the mass in a system that is closed will be constant. This holds despite what...
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How is fiber optic lighting better than traditional pool lighting?
it can be much prettier. of course it also moves electricity away from water alway a good thing, but a properly installed 12 volt...
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What turn of the century woman scientist researched radiation which led to the development of the x-ray?
Madame Curie Marie and Pierre Curie indeed studied radiation, however the DISCOVERY of the x-ray was made by and attributed...
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How much does one gallon of oil weigh?
One gallon of oil is 6-8 pounds depending on density. If you assume SAE 10W-30 oil; density is 875 grasm/litre = 1.929 pounds...
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Why is it when you suddenly stop a car people and packages fly forward but a helium balloon inside the car goes backwards?
When applying the brakes, the car is decelerating. Everything in the car, the people in the car, packages in the car, the balloon...
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Is it possible for something to explode in space like in the movies?
All chemical explosives that work on Earth will work in space. Here's why. Chemical explosives are just things that burn, but...
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What is the weight of 10 liters of Alum?
The answer to this question depends on the form of the aluminum. If the aluminum is a complete solid that has an actual volume of...
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What is the formula for calculating acceleration?
There are a few. The most famous is a = F/m, where F is the net force applied to a mass, m. Acceleration is also the change in...
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How much does automotive oil weigh?
As a rough guide engine oil usually weighs about 0.87 kg/litre or about 7.2 pounds per US gallon. Unfortunately a rough answer...
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Which substance melts an ice cube the fastest?
Water...It has the highest substance heat capacity i.e. water requires the largest loss of heat per mole to change phase (to...
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How much does one gallon of diesel fuel weigh?
The density of No. 2 diesel fuel is 850 grams/liter = 1.874 pounds/liter = 7.15 pounds per US gallon. Regular gasoline is...
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What is a Newton meter?
There are three different things that the phrase "Newton meter", all of them related to the unit of force called a "Newton": A...
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What is the modern periodic law of the elements?
The modern periodic law states that, "the physical and chemical properties of elements are periodic functions of their atomic...
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What affect does electricity have on soil?
Electrical current and ions can cause certain molecules (and moisture) to adhere to soil. Large amounts of current, such as a...
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How many grams are equal to one cubic centimeter?
This depends. A "gram" is a measure of mass, while a "cc" is a measure of volume. For example; 1cc of lead has more mass than 1cc...
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How does a microphone work?
A microphone is a device that converts acoustical pressure waves (sound) into electrical signals. All microphones have a...
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How many grams does a teaspoon of oil weigh?
About 4.3 grams Here's how I did it: - About 48 tsp are in 1 cup which converting to m^3 is about 0.000005 - Light crude oil...
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How much does ice weigh?
It depends on how much ice you have! If you have one kilogram of water, and then freeze it you will have one kilogram of ice. If...
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What is the charge and location and mass of a proton and a neutron and an electron in the atom?
The charge on a proton is +1. Its location is the nucleus, and its mass is 1.67262 x 10-27 kg. Protons have an effective size of...
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Do two 60-watt bulbs deliver the same light as one 120-watt bulb?
The higher the rated wattage of the bulb, the greater the luminous efficacy, which means you get more lumens per watt using a...
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How are hurricanes named?
The Atlantic is assigned six lists of names, with one list used each year. Every sixth year, the first list begins again. Each...
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What is the measure of the force of gravity on an object?
Force is the product of mass (scalar) and acceleration (vector): F = ma. Weight is a special case of that formula, where you...
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How do airplanes fly?
Two primary principles contribute to the creation of lift, which is what makes flight possible. Those two principles...
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What is the velocity of light in space and in different materials?
The speed of light (c) in a vacuum, is exactly 299,792,458 meters per second (ms-1), which rounds up very nicely to 300,000,000...
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When a radar gun says the pitch is 90 miles per hour at what point in the ball's travel to home plate is the radar gun measuring the velocity?
The measurement is made at the point where the ball is when the trigger is squeezed and the contacts close to activate the unit....
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Is the sky really blue because it reflects the color of the ocean?
No. The physics is based in the way light is scattered in the air, and it is discussed in the question, "Why is the sky blue?"...
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What is neutral buoyancy?
Buoyancy is the net upward force experienced by an object in a fluid. Pascal's principle dictates that fluid pressure on an...
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Where might eletrostatic charge be a hazard?
[Electrostatics generated by what is called triboelectric effect, occur all the time around us every day. We just don't notice...
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What is the force called when an object such as a Hot Wheels car performs a loop on a looped track and generates force against the surface?
This question is actually two questions in one -- what is the force on the Hot Wheels car, and what is the force against the...
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Does sunlight reflected off a mirror increase the temperature of the sun-rays?
A standard planar mirror will not increase the energy contained in the rays that reflect off it. In fact, there will be some loss...
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Can density be used to identify a substance?
Yes, it is possible. To identify an object using its density you need only a few things: an accurate scale to find the mass of...
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How do you make a weight scale?
If you're going to make a weight scale you're going to have to go through alot of trouble just to make. Might as well buy...
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What are the functions of newton scale?
°N = °C x 33/100
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How much does a gallon of antifreeze weigh?
It depends on how dilute the antifreeze is, for cars, antifreeze is usually a mixture of antifreeze and water. However, ethylene...
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What are the laws of physics?
There are Newton's Three Laws of Motion, and many others that include thermodynamics, electromagnetism, and quantum physics....
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What is ISO?
International Organization for Standardization
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Do peanuts explode in lemonade?
If normal peanuts are put in normal lemonade, then no.
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How is radiation emitted from the body?
The body radiates energy through thermal conduction through the skin to the air, clothes, etc, around the body. A small amount of...
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What are rainbows made up of?
Rainbows have no physical properties, though an argument could be made for them being made up of light. They are caused by the...
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Does a gallon of water weigh more than a gallon of beer?
Even though some of the carbohydrates and sugars have been fermented into alcohol, which is less dense than water, there are...
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How fast do things fall?
When objects fall on Earth, they accelerate at 9.8 meters per second per second -- or 9.81 meters per second squared (m/s2 or...
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How much pressure can an egg take?
An ostrich egg can be compressed quite a bit. A chicken egg, not so much. It also depends on whether you put the pressure on the...
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What are the advantages of nuclear fission power?
The biggest advantage is that it is an established way to generate electricity without emitting carbon dioxide. This is more and...
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Where can you find a list of hockey player puck speeds?
This is not a stat that is kept, except for the annual All Star game, when there is a Skills Competition, during the pregame...
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Lattice parameter of metal A and B are 2 and 4 what will be lattice parameter of alloy AB A20B and A50B?
??
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Does a rifle bullet rise after it leaves the barrel of the gun?
Assuming that (1) the gun was fired in a level position, that is, the barrel is parallel to the ground, and (2) there is no wind...
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How much pressure will a 300-gallon water tank supply with an elevation of 30 feet?
The volume of water is irrelevant to pressure. It is only the elevation that causes an increase in pressure. The static pressure...
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Why does a ship float?
Archimedes' Solves a Problem The Greek Mathematician and inventor Archimedes lived during the 3rd century BC. According to...
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How many pounds of ice equal one gallon of water?
The answer is 8.34. One gallon of water weighs 8.34 lbs. If you want one gallon of water when your ice melts, you need to have...
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What substance is the most expensive by the kilo?
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What is a neutron?
A neutron is a subatomic particle; it is one of the building blocks of the atom. As such, it is found in the nucleus of an atom....
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What are the steps to the scientific notation?
To write in scientific notation, you should first move the decimal point of the number to where the number is between 1 and 9....
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What is the speed of darkness?
Darkness is the absence of light. There is no speed of darkness. I guess you could say that darkness "arrives" when light...
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What are the examples in making investigatory project?
The Dark Totie of FU have surfaced to help face Kenneth. They are bred leaders as they used to command great armies and creatures...
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What is the take-off velocity of a 30-kg ball that is kicked at an angle of 45 degrees to the horizontal and travels 20 meters?
This is a ballistic motion problem. A 30-kg ball -- man, that's one heavy damn ball -- is kicked at an angle of 45 degrees to the...
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How can light be defined in simplest form?
The common definition of 'light' (visible) is electromagnetic radiation visible to the human eye. It is only a small part of what...
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What is the Law of Conservation of Mass?
Mass can not be created or destroyed but can be changed. Note that this has recently been updated, and is now the law of...
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What is the percent error formula?
% error = (|Your Result - Accepted Value| / Accepted Value) x 100 % of error = experimental value - accepted value divided by (/)...
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Is air travel time the same whether or not the plane is flying with or against the rotation of the Earth?
The back-and-forth discussion previously found in this answer has been preserved in the discussion page for this answer. Click on...
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How much does sea salt weigh per cubic foot?
Sodium chloride, NaCl, weighs 72 lb/ft3.
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Does weight affect how far you jump?
For the same leg strength / jumping technique, weight affects how far one can jump. Acceleration = Force / Mass With more mass,...
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What is the retention of heat from the sunlight called?
Solar gain it suks
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Who are some famous physicists?
Heisenburg, Einstein, Plank, Newton, Maxwell. Actually too many to name. 2. Gay lusack, Archimedes,Galileo Galillei, coulomb,...
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Give one advantage of a scanning electron microscope over a transmission electron microscope?
The SEM has become more popular than the TEM as it can produce images of high resolution, greater clarity and three dimensional...
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Why do people run before jumping instead of simply jumping in place?
You run then jump because you get more momentum and can jump higher. Also, you increase your horizontal velocity so that you...
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What type of energy does a ball have when it is at the top of a ramp?
Although your question was silent on the matter, we assume that the ball is at rest at the top of the ramp. At that point, it has...
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How is Specific Gravity defined?
Specific Gravity, SG, is a unitless quantity that gives the scientist or engineer an idea of how dense a substance is compared to...
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What is the difference between Free Electron Theory and Band Theory of solids?
Free Electron Theory: This theory tells that, metals conduct electricity because of the presence of free electrons in it. The...
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Who invented the bright field microscope?
august kohler
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What is a ray tracing?
A mathematical technique which involves tracing theoretical rays of light within a mathematically defined world. Render-Boy uses...
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Why do some things float on water while others do not?
Because they are less dense than the water. We call the amount of mass in a given volume of space the density. For instance, we...
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How much does one gallon of steam produced from distilled pure water at zero degrees Celsius weigh?
Gallons, as a form of measurement, is typically only applied to liquids and not to gases. A gallon is, however, a measure of...
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How will you make a simple levitating bed?
This is so easy it's ridiculous. It's also so expensive it's ridiculous. Buy about 150 pounds of samarium cobalt magnets (or...
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What is the upper limit of ultimate tensile strength of ASTM-615A bars above which rejection is recommended?
Why would you reject material that overperformed its tensile-strength specs? The standard for Concrete Reinforcement...
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What is before Alpha and after Omega?
Nothing. Alpha and omega are the first and last letters of the Greek alphabet.
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Who was a famous personality born in 1870 and graduated from Stanford junior University in 1891?
fegrg
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What is the formula for calculating volume?
Basically, it's area times height, but because the formula to calculate area is different for different shapes, the formula for...
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What is the weight of 1 imperial gallon of gas?
1 liter = 0.265 US gallons 1 liter = 0.22 Imperial gallons 1 USG = 3.79 liters 1 Imperial gallon = 4.55 liters
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What comes before Alpha?
Nothing. It is the first letter in the Greek Alphabet. It is correct that alpha is the first letter in the Greek Alphabet. For...
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How is energy stored in the dunking bird?
When the bird's head is in the water, the cool water soaks into the felt head. This causes the liquid inside the bird to...
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What is the 'Law of Machines'?
Machines which are used to lift a load are governed by the "Law of machines", which states that the effort to be applied on the...
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Why do you not collapse under the pressure created by the atmosphere?
If the outward pressure inside your body were not equal to the pressure pressing in on you, you would be crushed faster than an...
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