Gun Definition and 307 Threads

hey guys, I am new i didnt exactly which section to put this in...but i know it involves math so whatever ok i was on a paintball forum and this guy came up with a modification to do to a gun to increase air effiency (which is a very important aspect in a gun) In the firing chamber of...

1. A toy gun fires a 9.41-g projectile disc by using a compressed sprint (k=1.72 x 10^3 N/m) and a 13.1 cm long barrel. As the disc travvels through the barrel it experiences a constant frictional force of 0.13 N. If the spring is compressed 14 mm what is the speed of the disc as it leaves the...

I must say, this is sounding much more practical. The business hasn't done nearly well enough lately to justify the Moscow trip. http://www.incredible-adventures.com/hollywood-top-gun.html It's not a Mig 29, but it ain't bad!

Homework Statement There is a gun which mass is M = 4 kg. The length of the gun's barrel is l = 50 cm. I need to find the average recoil force while shooting the bullet which mass is m = 5g. The speed of bullet when it leaves the gun's barrel is v = 930 m/s. The Attempt at a Solution...

This has come up in a few threads as a side question, but I'd like to have a central discussion on this issue. The question I have is what evidence do you think will be needed to elevate the existence of Dark Energy to the same kind of level as the existence of things in the standard model...

[SOLVED] Water guns Currently on a forum about water guns there is a debate going on about what determines a water gun's performance between pressure and force. On one side are people who say that higher pressure differentials combined with a higher "Cv value" will mean more flow, which...

Don't take one from this guy. This link has been around for a while, but this may be a good time for a refresher view.

We've all seen the news reports about the virginia tech , isn't about time that the US Government bit the bullet and started protecting its citizens by banning the general public from owning guns or at least make it law that all guns must be stored at registered gun clubs

A most dangerous piece of kit, i used to build fence/shed nailing machines fitted with up to 8 of these guns, and i treated the things with ultimate respect, but now they are available to the general public , i think if (anyone) is to use one they should be (trained) in it use, i mean they...

hi Guys, i am creating a solenoid gun, but my problem is that when i put my magnetized needle in the solenoid , it just stops in the midway , is there any way that my needle pass through the solenoid without stoping ( with a good speed ) i really need your help

Homework Statement A gun that fires charged particles accelerates a 5-μC charge from rest through a potential difference of 50,000 V. The particle has a mass of 0.025 kg. With what speed does it leave the gun? Homework Equations EPE = KE (1/2)qV = (1/2)mv^2 , solve for v^2...

Homework Statement The spring of a spring gun has force constant k = 400 N/m and negligible mass. The spring is compressed 6.00 cm and a ball with mass 0.0300 kg is placed in the horizontal barrel against the compressed spring. The spring is then released, and the ball is propelled out the...

Then you make black powder with KNO3 + S + C and if your ratios are abit messed up. Can somebody please answer these 2 weird questions for me? 1. What’s the white stuff forming then the messed up mixture burns, it’s like ceramic of something 2. And something is extremely slippery if you...

Hey, I made a rail gun that is 3" long with a disposible camera's flash charger. The one problem i had was that i couldn't get the spark to jump across the two rails. So i took a piece of metal with plastic on the outside and touched the bolts on opposite sides and got a large spark but not...

Will an electron gun firing electrons into the air end up having no more electrons to fire eventually?

Consider the following: You have a toy gun that shoots ping-pong balls at about 5 m/s. You aim the gun at a doll sitting on a fence. Just as you pull the trigger, a friend of yours (or so you thought) nudged the doll forward, just enough to fall off the fence. Will the ping-pong ball hit the...

A spring is compressed by 5.5 cm and used to propel a 3.8 g cork from a cork gun. k = 10 N/m. A) What is the speed of the cork if it is released as the spring passes through its relaxed position? B) Suppose, instead, that the cork sticks to the spring and stretches it 1.5 cm before...

Hello: I'm stuck on this following problem. [FONT="Fixedsys"]A spring gun, held horizontally 1.6 meters above the ground, fires a 0.07 kilogram ball so that it lands a horizontal distance of 2.3 meters away. If the gun is pointed straight up, and the same ball is fired, how high (in meters)...

A person is standing on a sheet of ice so slippery that friction may be ignored. This individual fires a gun parallel to the ground. When a standard cartridge is used , a 17-g bullet is shot forward with a speed of 250 m/s, and the person recoils with a speed of vc. When a blank cartridge is...

The lead female character in the movie Diamonds Are Forever (lol so random) is standing at the edge of an offshore oil rig. As she fires a gun, she is driven back over the edge and into the sea. Suppose the mass of a bullet is 0.010 kg and its velocity is +720 m/s. Her mass (including the gun)...

A spring gun (k = 28 N/m) is used to shoot a 56-g ball horizontally. Initially the spring is compressed by 18 cm. The ball loses contact with the spring and leaves the gun when the spring is still compressed by 12 cm. What is the speed of the ball when it hits the ground, 1.4 m below the spring...

A pistol that fires a signal flare gives the flare an initial speed (muzzle speed) of 185 m/s. (a) If the flare is fired at an angle of 55° above the horizontal on the level salt flats of Utah, what is its horizontal range? You can ignore air resistance. (b) If the flare is fired at the same...

A 135 g bullet is fired from a rifle having a barrel 0.590 m long. Assuming the origin is placed where the bullet begins to move, the force (in Newtons) exerted by the expanding gas on the bullet is 20000 + 8000x - 22000x2, where x is in meters. (a) Determine the work done by the gas on the...

Hi, I was just wondering if a projectile that is launched with a rail gun exerts a force in the opposite direction on the frame of the gun itself? Thanks, Jason O

Any help or simply reasons why my answer is incorrect would help greatly, thanks! Question: A projectile is fired from a horizontal spring-loaded gun aimed directly (along the line of sight) at a distant bull’s eye. Because of the pull of gravity during flight, the projectile misses and hits...

Okay, maybe not great marks for technical merit, but high marks for style and definitely very high marks for dedication. What a trooper! http://www.thesmokinggun.com/archive/0411061foot1.html (Click the picture for the video)

Hello, I am a new user and in Dire need of some help. I am currently entering my senior year of High School. I am enrolled in an Honors Introductory Physics course, and for our summer assignment, are required to analyze a movie, determine four scenes of the movie, and explain the physics of the...

I am not quite sure how to start this problem: A bullet of mass m is fired from a gun of mass M. If the gun can recoil freely and the muzzle velocity of the bullet is v. Show that the actual velocity of the bullet relative to the ground is v/(1+b) and the recoil velocity from the gun is...

I have had a shot gun for five years, used for clay shooting, but the law has (reviewed) my case and refused a renewal, on the strenght of things i did in the past, so now i have to hand in my beloved s57, i would have thought that 25yrs of good behaviour would have been good enough to show a...

Hey! Im 16 and love physics, but I am starting to get board with the regular school course and want to start a little project of my own, i thaught a coil gun would be a good start:biggrin: . Any way, I've looked on google on how to make one but all the instructions suck so i was wondering if...

Hi, Please , take a look at this problem: A child is trying to shoot a marble of mass m in order to hit the center of a box using a spring loaded marble gun. The marble gun is fixed on a table and shoots the marble horizontally from the edge of the table. The edge of the table is a height h...

If the gunpowder in a gun is detonated in a chamber consisting of compressed air such that the top of the chamber is formed by the bullet, wouldn't the efficiency of energy extraction from the gunpowder increase as the pressure ratio will be much higher? Would such a bullet be able to achieve...

A machine gun fires 60 gram bullets at 360 bullets a minute. If the velocity of the bullets is 600ms^-1 , then what is the average force on the machine gun? How to do this? I have no idea at all. Thanks.

I am making an electric paintball gun. Nothing fancy just analog. For the paintball guun to work a solenoid turns on when a normally open push button is pushed. The power goes on breifly, then off. Then another solenoid turns on , then off. That solenoid is hooked up to a valve that released...

I have been playing around with an idea for a few years and I am interested in receiving any feedback. I am an amateur, so if there are any issues with my logic, please feel free to straighten out my thoughts. First, imagine 2 astronauts floating in space. The first astronaut has an atomic...

Hello everyone, I was just thinking about something...A police radar gun measures the speed of an object by the change in frequency of the reflected wave. For example...we might have a gun sending out a series of radio waves towards an object moving toward us like this... GUN...

How the gun recoil force is calculated.

I need some help on how to find out how many grams of each substance i need to make gun powder for my Chemisty class. I have the equation its 2KNO3+3C+S -->3CO2 + K2S+ N2 I know that there are 10 grams but i have to figure out how many grams are for each substance. I'd just like someone point me...

If one were to increase the size of his gun and the bullet in PROPORTION...for example, 5 times the mass of the gun and 5 times the mass of the bullet...would the recoil experienced by the shooter be the same as the recoil experienced by the same shooter where the masses were not...

http://ap.tbo.com/ap/breaking/MGBF2XRX08E.html Ok now... do these assemblymen in my state even think about what they are talking about when they make these bills? What i got to ask is this: 1) How in gods name do they think they can stop any crime if this is a california only thing? Can't...

I've been reading about a situation on the conservation of energy: A spring-loaded toy gun is used to shoot a ball of mass m straight up in the air. View Figure The spring has spring constant k. If the spring is compressed a distance x_0 from its equilibrium position and then released, the...

he everyone again! today, i just got a lab for physics. I have two days to really examine that gun. the teacher will give me an angle that i should aim the gun, and a cup. I should know the distance between the gun and the cup so that when i launch the ball, it will go inside the cup... first...

For a physics project, I really want to do something with an explosion in it, but I can really only come up with one practicable idea - a potato gun. Practicable meaning, an idea that won't cost me much more than 2 hundred dollars in instruments and materials. I plan to find out how much energy...

During World War 1, the Germans had a gun called Big Bertha that was used to shell Paris. the shell had an initial speed of 1.22 km.s at an initial inclination of 85.3 degrees to the horizontal. The acceleration of gravity is 9.8 m/s^2. How far did the shell hit? Answer in units of km. i got...

What was so special about WW2 era German 88 mm anti aircraft gun later used to great effect as an anti tank gun?

Need Help: Looking for college level proffesor or someone "qualified" to interview Im doing my senior project on Rail Guns and as a requirement I need to interview "qualified" people, asking them questions pertaining to my project. I'm looking for atleast one person to interview, 2 would be...

I have to tie the construction and dynamics of a potato gun with one chapter from my physics book. That's fairly hard to do because a potato gun has much to do with more than one chapter, but my teacher just wants one... Does anybody have an idea on what the best chapter would be? I have...

I am working on a project for graduation and I am writing a paper on rail guns, but I am having trrouble understanding the basic principle behind it, Loretnz Force. I've tried to look online for a good site that explains it in laymens terms, but I can't seem to find one. I know that current...

Here's the question: "A spring-loaded toy gun is used to shoot a ball of mass m straight up in the air. The spring has spring constant k. If the spring is compressed a distance x_0 from its equilibrium position and then released, the ball reaches a maximum height h_max (measured from the...

if you were to hit a fish with a laser gun, how would you aim? (provided that laser if faster than light). Pls explain.