Slingshot Physics
I am investigating how the displacement of an elastic band affects the distance an attached object will travel (the relationship between how far back you pull a slingshot and the distance an object...
View ArticleAcceleration changing over time
Hey, i am having trouble doing the calculation on a dynamic system. My acceleration is not constant during, and because of that my speed of the particle is changing from the original, and i wanna know...
View ArticleLevitating Globe project
Hello, I am a student and this semester I am doing a project in Experimental Physics class. We plan to make a levitating globe! We have already researched on methods of overcoming Earnshaw's theorem...
View ArticleStruggling with RC circuit concepts
So we're covering RC circuits in my physics class and I'm having some trouble with the concepts. When you have a circuit with a resistor and a battery, current passing through the resistor produces a...
View ArticlePartition function for hard spheres on a lattice
Hi everyone, I'm reading some lecture notes on statistical physics and thermodynamics and I'm stuck at an expression for a partition function which I really don't understand. The chapter is on mean...
View ArticleThe difficulty of understanding voltage
Hi all, first post, I hope this is the right place. As I understand, voltage is a measure of the energy given to each coloumb of charge. Therefore, a cell with a higher emf will give more joules of...
View ArticleInduced charge on a solid metal sphere
All I understand clearly that if a metal sphere is charged then the charges must reside on the surface because that is the only way there is no electric field within the metal. However if you imagine a...
View ArticleThermodynamics help please. Compression, heat, cool, decompression
Hello everyone. New guy, first post. I typically frequent gasoline engine performance forums, but my inquisitive nature has led me beyond the scope of general knowledge available within that format. I...
View ArticleSuperconductors and induction - what are the posibilities?
Hi all, I have a question which relates to induction and one potentially useful property of superconductors which seems to suggest one intriguing posibility. I wont say what just yet since my science...
View ArticleForce on Solenoid Plunger
I'm trying to figure out how to calculate the actual physical force on a solenoid plunger. I.E what kind of load it can pull or push. So if I setup a magnetic circuit and calculate the flux going...
View ArticleRate of thermal conduction in various copper structures
A cylinder is constructed from a super insulator. The dimensions of the cylinder are Length L: 1 M; inside diameter i.d.: 12 mm. The entire Length of the cylinder contains copper (cases described...
View ArticleWhat are the Physics of a "loop-the-loop"
I have to design an investigation that relates to the circular motion of a body executing a vertical "loop". Obviously, the physics involved varies quite significantly depending on the method of motion...
View ArticleWhere can I find Pierre-Simon Laplace's Mécanique Céleste?
I've been hunting for all five volumes of Mécanique Céleste by Laplace but I can't find all 5 translated to English. I found volumes one and five on Google books but the other three have remained...
View ArticleIdeal Gas in a Cylinder with Piston
Hey, I'm trying to come up with a question, be it a simple one, where a mass of ideal gas (Oxygen) is bound in a cylindrical tube and has a circular piston applied to it - so that the gas becomes...
View ArticleRotating cylindrical spaceship
Is the energy of a rotating cylindrical spacecraft conserved when a point-like astronaut climbs up a spoke connecting the walls with the center of the cylinder? If so, when I calculate the fractional...
View ArticleIf a force is applied to a box, and the box is not displaced, no work
If a force is applied to a box, and the box is not displaced, no work is done on the box, right? But to apply the force, don't you use up calories which is a unit of energy?
View ArticleRefridgeration, Boyle's law or enthalpy of vaporization?
I've curious about how an air conditioner or refrigerator make's cold air. I've read two different descriptions how cold is "made", or how heat is removed from a system. Some descriptions Ive read say...
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how to find the phase shift and amplitude ratio
i am looking for the amplitude ratio and phase shift of this graph? could someone explain me how to obtain these results from this type of graph? Attachment 56417 thank you Attached Images 0.40Hz.gif...
View ArticleWater Wavemaker calculation need. fluid dynamics help.?
Hi guys, I haven't taken any physics classes or any of the sort to figure out the problem that Im faced with. basically what where creating is a wave maker like this...
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Voltage over a capacitor in a RC-circuit.
Why is the voltage over the parallel-connection containing the capacitor Vc= Q/C It makes a little (intuitive) sense to me, but I would like to see the proof if possible. Thanks. Attached Images...
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