# What is produced: Definition and 297 Discussions

This is a list of the most-produced aircraft types whose numbers exceed or exceeded 5,000. Any and all types of aircraft qualify, including airplanes, airships, balloons, gliders (sailplanes), helicopters, etc.

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1. ### Particles produced and energies in the target Geant4

Dear experts.Which example file in Geant4 can I use to find the particles and energies produced in the target?

31. ### How Much Heat is Produced by Radioactive Waste?

To begin, I am not sure whether or not this is the correct location for this post since I am a complete greenhorn to this forum (just joined today!). I ask how much heat is produced by radioactive waste because I was wondering if it was viable to reuse all the tons of stored radioactive waste...
32. ### How is water produced in photosynthesis?

I have looked everywhere, but most of the sources say water is not produced (which is not true), and some sources, such as my biology textbook, simply say it is produced. I know for every 6CO2 put into the Calvin cycle, 6 oxygen atoms are put into 2*G3P. Where do the other 6 leave the Calvin...
33. ### Sound waves produced by an aircraft

Suppose that an aircfract somehow is not moving. Then I would expect the sound waves it produces to spread out uniformely in a spherical fashion. Now imagine a airplane traveling at approximately the speed of sound. In this case, if the airplane produces a wave at point A and after a time T the...
34. ### How many kg Uranium is needed for 5kW produced?

Homework Statement Energy released is 5.6MeV, 5kW is produced, Half life = 87.7 years for Uranium Need to find how many kg you need to produced that much power. Homework Equations E = Pt, Q = (mass defect) * 931.5MeV/c^2 The Attempt at a Solution I solved for the energy released to be...
35. ### Torque produced by friction when braking in a car

Hi So I am busy studying rotational motion and there's an example in the book where they explain that when a car brakes the force of friction acts as a torque force which explains why a car lifts up at the back when braking. Because the car does no rotational motion they say the net torque is...
36. ### I Width of Spectrum produced by a prism?

How to calculate the width of spectrum produced by a dispersive prism of a given apex angle and refractive index, of white light of given width incident on first face of prism?
37. ### Emergent light produced by two lenses

Homework Statement Two thin lenses are placed 5 cm apart along the same axis and illuminated with a beam of light parallel to that axis, The first lens in the path of the beam is a converging lens of focal length 10 cm whereas the second is a diverging lens of focal length 5 cm. If the second...
38. ### I What % of the heavy elements are produced by kilonovas vs. supernovas?

So the recent neutron star merger event showed that most of the heavy elements (gold, platinum, uranium, etc.) are produced in kilonovas. But with neutron star mergers so rare, there can't be that many kilonovas. Prior to this I always used to think they were mostly produced in supernovas. The...
39. ### Magnetic field produced at point P

Homework Statement https://imgur.com/gallery/vCOZq Its question 26, and the figure can be seen at figure 30.26 Derive and expression for the magnetic field produced at point P due to the current carrying wire shown in figure 30.26. The curved parts of the wire are pieces of concentric...
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### I Gravity changes produced by a compressed and stretched spring

If I compress a spring beyond its most relaxed point it will have more energy and thus by General Relativity produce a stronger gravitational field than the uncompressed spring will. But suppose instead I pull in the opposite direction and stretch the spring beyond its most relaxed point it is...
41. ### How harmonics are produced in a guitar string?

My question is simply 'are all notes produced in a guitar produced by first harmonics?', but I will clarify what made me ask this question. Now, if you have a wave driver you can make several harmonics in a string by increasing the frequency of the machine. In a guitar string, however, it does...
42. A

### Are all carbon composites produced from oil?

As I understand it, carbon composites are some combo of polymers and resins, which are derived from oil(black goo from the ground) as the main raw resource. However, as this is carbon, couldn't such materials be produced also from other sources, like corpses, plants, etc? I mean, carbon is...
43. C

### Field pattern -- Which can be produced by 2 point charges?

Homework Statement Homework EquationsThe Attempt at a Solution why not B?
44. M

### 2 body engine, final equilibrium temperate and work produced

Homework Statement 2 bodies with contant heat capacity C and 2C, are initially at temp T and 2T. if a heat engine executing a reversible carnot cycle operates between the two bodies until their temperatures are equal, what is the final temp of the bodies and how much work is preformed by the...
45. ### Electric Field Produced by a Finite Charged Wire

Homework Statement A charged wire of negligible thickness has length 2L units and has a linear charge density λ. Consider the electric field E⃗ at the point P, a distance d above the midpoint of the wire. What is the magnitude E of the electric field at point P? Throughout this part, express...
46. ### Concentration of a salt produced by neutralization reaction

Homework Statement 10.00 cm3 of 1.00 mol dm–3 sulfuric acid is fully neutralized by 20.00 cm3 of 1.00 mol dm–3 of sodium hydroxide. What is the concentration, in mol dm–3, of sodium sulfate solution produced by the reaction? A 0.33 B 0.50 C 0.67 D 1.00 Correct answer = A Homework Equations...
47. ### Are pions produced in pairs?

I thought only strange particles were produced in pairs via the strong interaction, however in my textbook it states 'kaons, like pions are produced in pairs via the strong interaction'. Can particles that are not strange also be produced in this way?
48. ### Force produced by flow in aircraft engine

Homework Statement Consider an aircraft turbine as in the figure below. In the reference frame of the turbine, air of density ##\rho_0## comes into the turbine with speed ##U_0## through the entrance with cross sectional area ##S_0##. In the combustion zone, air is mixed with the fuel and...
49. ### Torque produced in lever setup

Hi guys, It's been a while since I've done much resolving forces stuff, and I'm struggling to make sure what I'm doing is right. I have a setup like below, and I want to find the torque around point D due to the force acting at point A. I've had a couple attempts but I feel like I'm just...
50. ### How Many Regions and Convexity with n Straight Lines on a Plane?

Homework Statement Suppose n straight lines are drawn on a plane. When these lines are removed, the plane falls apart into several connected components called regions.A region R is is said to be convex if it has the following property: whenever two points are in R, then the entire line segment...