about ten times
the best fins for a bottle rocket is having four fins located at the bottom of your bottle rocket the shape of long triangles ! ! ! :) hope it helps !
add more mentos!
It depends on what type of rocket you are building.
At the top of the rocket's trajectory it is motionless for a brief time and the only force acting on it is that of gravity; the rocket motor has long since spent its energy.
it is okay for any hamster to drink out of a hamster bottle as long as you clean the bottle.(you should clean it everyday)
Fill one empty bottle partway with water, take a second, identical empty bottle and connect it neck-to neck with the other bottle. The are special connectors for doing this, but duct tape can work if you don't have one as long as you hold on to that part. Once they are connected turn the whole thing upside down and briefly shake it in a circular motion. A "tornado" should form in a couple seconds.
If you open the bottle, you need to keep it refrigerated and it will last for a month. If it is an unopened bottle it should last for about a year :)
When designing a pop bottle rocket, your objectives are to minimize weight and drag. Think of the pressure in the bottle as a fixed ammount of energy that will be turned into velocity of the rocket per Energy = 1/2 * Mass * Velocity^2. As your rocket flies up into the sky, two things will happen to that energy. First, the energy will change into potential energy per Energy = Height * Mass * Gravity. (Gravity = the rate of acceleration due to gravity = 9.8 meters / second^s.) Second, the energy will be lost to friction. As your rocket flies through the air, it will bump trillions of trillions of air molecules and give its kinetic energy to them. To minimize this bumping, you want to make it easy for the rocket to push the air molecules out of the way. This would be best accomplished by a long, slowly tapering nose-cone. Keep in mind that the heavier your nose cone, the less velocity you get.
well it depends on what kind of bug it is! some bugs dont sink in water and they stay on the surface! they can stay there until they die when time pass or if you drop some salt on the water! or maybe if you shake the bottle a little bit ;)!
I shake it for 4- 5 minutes
depends on the rocket... you're clever.
it was a red rocket about 8 inches long