CAN CANNON POST LAD

      Q1 :Because we wanted to use it as baffles. These baffles are used to make sure that all the fuel  is all burnt up to fire the cannonball. With the baffles inside the cannon, more oxygen is trapped inside the cannon. There is the more oxygen ,the better the combustion of the ethanol is.
  
      Q2: We shake it first to make the ethanol react better, because we shake it, it makes the concentration of the oxygen higher and the more oxygen .That better than before.
  
     Q3: The energy transformation occurred during the launch is from potential chemical and gravitational energy to kinetic energy, which includes sound, heat, and light energy.

     Q4:Besides ethanol, we can use: Air freshener, hairspray, Pesticides
  

    Q5:The Newton's  third law,  if there's action, there's a reaction. The action from the cannon ball to the cannon that makes the cannon goes backwards (if it's not stable enough) makes a reaction of the cannonball going the opposite way. And this is also the law about Rocket fly to Outer space.

The information of artillery

Usually by gun body and artillery gun carriage of the two most (in JiaNongLiu errors, for example).Gun body part of body tube, gun tail, bars and the gun back up the system.Body work to give projectile velocity and flight direction, and make projectile spin, the projectile HuaTangBao general not rotating).The gun used for holding gun bars.Gun used to atresia bars, firing shells and the life-weary taker out makes after launch.Modern gun most used half ZiDongBao bars, some use ZiDongBao bars.The system is back to reduce gun sitting behind the energy.Launch, packed in the gun in the bars and needle crash DeHuo shell, lit propellant.A significant amount of propellant combustion gas (pressure generally about 3 x 10 ^ 5000 palmer), promote the projectile and the great acceleration along the life-weary taker move forward.From the moment the projectile get maximum speed, and a ballistic fly along the to the target.The projectile pushing forward movement of the gas and push gun sit behind.
The gun carriage by reverse recoil device, the spinning frame, shelves, high and low machine, direction machine, machine, aimed at device, balance the frame, big frame and exercise body etc.Reverse recoil device including machine and complex in back into the machine.Back in the machine gun sitting behind to consume energy, which is a certain distance to sit behind cannon and stop.After into the machine gun sitting behind when used in the energy storage, recoil at the termination of the gun into the body after that original position.In the back of the movement, because the recoil device buffer action, gun to the strength of the body on gun is greatly reduced and the gas in the role of cannon about body axial force (force life-weary taker) from 1/30 to 1/5.Shake frame is sitting behind, the complex into gun of the guide, is also part of the ups and downs (including gun body, reverse recoil device and shake frame) of the subject.The spinning frame with its ear shaft installed in on shelves, borrow high vertical rotating machine.Turn on the main body of the part is, to put a task next rack, borrow direction for turning machine level.High and low machines and machine gun in that direction and high and low and direction turn.High and low machine into the spinning frame and between shelves, direction with the shelves and the machine frame between.Balancing machines make gun spinning frame of ups and downs in the ear shaft keep balance, make high and low machine operation of the light.Aiming at device by a and aiming mirror composition, used to according to the yuan implement artillery gun shooting aiming.The frame, big frame and exercise body, firing at the artillery support, marching converted as.

My newspaper tower

Why use this design ?
Because I think the Triangle is enough strong. And the Triangle is much strong than Flat-shaped quadrilateral. So use this idea to do this newspaper tower .
Any physics I apply ?
While design this newspaper tower , we use this idea Triangle is strong than Flat-shaped quadrilateral. And we also use the Newton force can the direction to the end. We also use the
tape to reinforcement the end.

My favourite skyscrapers

I think my idea is the building  likes a boat ship.    I like this idea. because of I hate swimming . if  the building like it .
 

This  picture form Marina Bay Sands,this design fromAntony GormleyPool height of the platform itself had more than the Eiffel Tower, the world's largest swimming pool platforms. These pools can bring water to the horizon effect. In fact, water isset by the pool into the pool below, and then apply again and again returned to the pool.They have two sets of the circulatory system, the first set of the same features as the traditional swimming pool, main pool filtration and heating the water, the second set of pool water filtration, and then went back to the top of their pool.

Marina Bay Sands Resort nightly rates up to 350 pounds, by the architect Safu Di designbased on the shape of playing cards. Into the resort hotel, shoppers can take a shipaccording to the traditional Chinese style of the 17th century to build a small wooden boat in a canal in the indoor play.

The outdoor swimming pool built in the Marina Bay Sands, 55-story tower top, is an Olympic length swimming pool three times the height of 650 feet (198 meters), is under theheight of the world's largest outdoor swimming pool. The special design makes the pool water looks as if extended to the vision of the end, in fact, the pool's edge are designed to be a few centimeters below the water level at, the water will flow out of a set of pool below, and then pumping the water pump back to top of the pool.

     

Use Nowton' s laws to solve problem

The frist question is Assumption :
1@:a=0,Ax=0,g=9.81m/s2
Fx=0,Fy=o
2@:Inclineo planes
Kinetic assumption :f(x)=uKF(n)
---positive X-a x is in direction of motion
-Positive a F
-Positive X -ax is in direction of potential motion
-uS =tan O,coefficient of friction
-Fs = u s Fn

-Total F ~Fx=0;Fy=0;

The second question is

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HOMWWORK

where‘s santa ？

  The earth as a big magnets, so is a magnet poles on both ends of the the two points, or magnetic field lines the most dense that point. The earth itself is like a huge magnet, the magnets have two very, CiZhen south refers to the South Pole position for the north, refers to the north magnetic pole position for. But in fact the earth's magnetic field direction and not pointing to the north and south. The earth's magnetic field is not constant, it's the north and south poles had a position, namely the exchange of geomagnetic North Pole change into geomagnetic South Pole, and geomagnetic Antarctic into geomagnetic North Pole, this is the so-called "pole reversals".
The compass point north and south is equivalent to a small CiZhen parallel in a bar magnet, we would find that, outside a bar magnet and small CiZhen N very pointed direction just the opposite. So, it is known that the magnetic poles of N a geographical the poles of the earth is the S extremely; Geographic pole S very is the earth's poles. The N extremely
  The poles of the earth is the earth as a magnet showed what a S a N. Geographic pole is the earth in geomagnetic field compass referred to a S a direction. N.
I think santa live in the north.because a direction. N may be santa's home .
In this way ,physical south as geographical north .

  Declination is nine deep. there is a morganatic plot,so the real north is 81n rather than 90n . Santa live in north , so he is on 81 n

  So,i think the santa don't live in the north in physical north .