Classical Physics

What is the temperature change when the surrounding pressure is suddenly higher? I think it rises if the pressure is not change so greatly, right?

When we immerse a heater into a beaker of water, the water molecules move and bump into each other more quickly and vigorously.Their kinetic energy is increased and thus the temperature rises. What I want to ask is " Does adding heat into a beaker of water, its potential energy rise or remain constant ( not considering the latent heat)??Assume that rise from 25 degree Celsius to 50 degree Celsius. My thought is that it doesn't change. Its because the specific heat capacity for water liquid state is constant from 1-100. The intermolecular force is so great?

One day, when I use my electronic dictionary, a warning window came out to remind and warn me the voltage of the battery is not available, not enough for further using. Then I think, electrons of which atom is being pushed? Is it that the electrons of the circuit?

When we draw image throught a magnifying glass, we usually apply the two techniques. However, when we actually see the object throught a lens, do we draw the image to one(eye) point?

Is it possible for the Earth's magnetic field reverse in polarity? I have recently read an article that suggested the Nothern Aurora is getting weaker due to a change in the flow of molten magnetic material in the center of the Earth. This in effect will flip the magnetic poles. It also suggested the Earth's magnetic field may have reversed several times in its history. I've never heard of this.

This thread does not make sense to me. Can you tell me how you trap a photon? How do you remove a photon from light? How do you measure where the photon is? how do you build the device to measure the photon? the Heisenberg principale says you cant measure where it is exactly? How do you keep a photon between mirrors? Sorry but to me this dosnt make any sense?

How can scientist know that when a line pass along the normal, from less denser to denser , it still reflects along the normal ?

When a stationery object is struck by a moving object, such as a golf ball hit by a golf club, does the stationery object instantly move when struck. Or does it have to accelerate from 0 mph to say, 32 mph. If so, there must have been a moment when it reached 16 mph, and before that 8 mph and 4 mph and so on. As you cannot keeping halving your speed forever, or can you, the question is (1) at what point does it stop being stationery and become moving and (2) what speed does it start off at? As I have no training in physics I can only come up with two possible answers, (1) 0 mph is somehow a speed with the same characteristics as any other speed, or (2) this sounds really…

Okay fellows. Here's my challenge. There existed a transfer orbit from asteroid Vesta (IAU number 4) to Earth with a departure date of 4 February 2004. (Go look up the orbital elements of Earth and Vesta; that's part of the work!) Find: The classical orbital elements of the transfer orbit, the transit time, and the change-of-velocity vectors at departure and at arrival. The classical orbital elements are: semimajor axis, eccentricity, inclination to the ecliptic, longitude of the ascending node, argument of perihelion, and Julian date of perihelion passage. The delta-vee vectors should be referred to heliocentric ecliptic coordinates. Please show …

Okay, a man is in a train that is going 25 mph. If he runs at 5 mph in the train relative to the train he's going 5 mph. But relative to the earth he's going 30 mph (if he's running the same direction). So if light always goes the same speed, what is it relative to? If it's going the speed of light relative to the earth, then how fast is it going relative to the sun? or the other planets? How can we even classify speed at all? I'm confued, will someone talk some sence into me?

I'm not perfectly sure if this is the right forum, but I put it here because there is no "general physics" forum. Oh well... The state of a mass can be altered by changing either heat or pressure. Heat any solid and it becomes liquid, then gas, then plasma. Increased pressure, on the other hand, makes a mass "harder" (for instance liquid oxygen in tanks) 1) In space there is no pressure. But not all matter in space is plasma. Or is it? Why/why not? 2) What kind of pressure would it take to create a pure hydrogen cube of 1 ccm at 0 degrees C. Put the answer in elephants please I am very very uneducated, enlighten me!

Ruling out: dodging it, and wearing a full body armor suit of non-conductive material. Is there anything you can do to lessen the effects of the tazer or simply not get shocked? here is one potential solution i see, but i dont know if it will make it worse or not. http://www.afrotechmods.com/cheap/pikashoe/pikashoe.htm It pretty much grounds yourself with a 12v Negative ion generator. I Think those tazers use 50k v?

I understand that what follows may seem crazy. I am purporting that the most fundamental law in science is wrong. If you find the parts about the law of conservation of energy being wrong are too much for you, then at least read the bit on inventions. Physics.txt

What is the total resistance of this circut? All the resistors are 10 Ohms so what do you think it is....please show working aswell

I read that simple electronics in space need ventilation fans or they burn up. If they took a standard flashlight into space, would there be a problem with the bulb overheating in the weightless enviroment? I am just curious as to how big of a problem this is. Just aman

How does a car convert diesel or petrol into energy? I think it does not use the thermal turbine, does it ?

Hey guys. Thanks for all the help in the past. I now have another question to solve. Not sure which equation to use or even how to start . Here's the question. Four kg of ice, are mixed with 60 kg of water which is at a temperature of 50 degrees C and the resultant temperature is 40 degree C. Calculate the initial temperature of the ice if its SPECIFIC heat is 2.04 kj/kg K and it LATENT heat is 335 kj/kg. Take the specific heat of water as 4.2 kj/kgK. Thanks again

i was just wondering....... you all know a gyroscope? well if you had counter spinning discs on the same gyroscope (not taking into acount the friction etc.) would the net force cancel each other out and it would fall over? or not.......... im in the eprocess of making one now...damn decent brass is hard to find feedback please

im a medical guy ,so dont bash me if im wrong,just correct me. if a train is coneected to 2 engines one of which has speed of 40 and other 60,and if both are started simultaneously what will be the speed of the train? will it be 60 above 60 below 60 and above 40 1>it is 60 because 60 overrides 40.(my presumed ans) 2>abvove 60 because some load will be shared by 40 which helps to pull it 3>previosly a 40 engine was attached and now a >40 is attached ,so the speed will be above 40 but below 60 well i thought that 60 was right so where does the energy used up by 60 go?

Can someone explain this to me? http://www.americanantigravity.com/video/Nov7-Outdoor2-WinMedia.wmv

As energy energy never lost....only from one form to another.... What is the first energy that starts on Earth? It is also considered to be the beginning of life.... On the other hand, can organisms live without any energy? Thx for furthur responds Albert

What is the related name of physics studying about the construction? For eg, stability of shapes, advanced equilibrium, compression and tension...but they are only terms related to...all i want to know is the specific area about construction in physics.,. Albert

How to find out the power by using average velocity? given info: object:1kg, average velocity:1m/s, distance:10m Aprciate for the responds

A wheel free to rotate about its axis that is not frictionless is initally at rest. A constant external torque of 50 Nm is applied to the wheel for 20s, giving the wheel an angular velocity of 20pi rad./s . The external torque is then removed and the wheel comes to rest 120s later. Find a) the moment of inertia of the wheel and b) the frictional torque which is assumed to be constant. part a) I have T = I * ( angular acceleration ) heres where im not sure what to do, the book has the answer as I = 15.9 which works if you dont take into account the torque caused by friction. So is the book wrong or for some reason you dont have to take into account the frictional t…

Because i am doing a project on bouncing balls, i am also looking at a situation where the ball bounces down a stair. What i need, is to find out the required value of e for this question ok , u have a ball bouncing down a stair. forget about the horizontal stuff, u can either think of it as looking head on to the stairs. or imagine a ball bouncing on a surface, but after each bounce the surface moves down a fixed height. basically a stair. u get me rite. if u look at the graph. we DROP a ball at rest from height H, and the ball as coeff of restitution e, all i want is the condition for e so that the blue heights are equal. or equivalently the brown h…