Asked in Physics, Engineering
How many fins should you put on a long range bottle rocket?
The two best amounts are 3 and 4 fins. If you want your rocket to be extra light but not highly stable, put 3 fins on. However, if you want to have your rocket have a little additional weight but be quite stable, put 4 fins on. In depends on what your goals are for your rocket. ...
Asked in DIY Projects
How would you make a good bottle launcher?
# Remove the label from the outside of the bottle. Take a cloth and some paint thinner to remove the sticky portion of the label. This may take a while and a lot of rubbing. # Decide how many fins you would like. Four fins are easier than three, but if done correctly either way works well. The fin shape is also up to you. See the diagram for the easiest fin shape. Next, trace the fin design out on the...
Asked in Chemistry, Endangered, Vulnerable, and Threatened Species, Science Experiments, DIY Projects
How do you make a water bottle rocket?
A 2-liter bottle will be required, as a 20-ounce is too small. Remove the label and take the cap off, but save this cap. take a pen apart and saw the barrel of the pen in half. Outline the size of the barrel on the top of the cap. Drill a hole this size into the cap. Using cardboard paper, construct 3 or 4 fins for the ship. A foam football cut in half can make the nosecone of the...
Asked in Hobbies & Collectibles
How do you make a bottle rocket that goes far?
A coke and mentos rocket works very well. If you have the spout if the rocket facing downward, and the cap loose, you can fill the bottle with coke. Any decent side fins can be made from cardboard, but you can use something lighter, like tissue paper, to increase air-speed velocity. You can attach these using my favorite type of tape, Scotch Tape. A nose cone can be made from a party hat. You make those, or buy one at any...
Asked in Science, Inventions, Physics, Biochemistry
How do you make a good but simple water rocket?
A 2-Liter plastic soda bottle makes an excellent motor for a simple water rocket. With practice, you can make a really fine water rocket using 3 2-liter bottles, cardboard, card stock, tape, and readily available materials found in most homes. You may need a visit to the hardware store to make the required launcher, or there are commercially available launchers. The biggest challenge for making a rocket with a soda bottle is achieving stable flight. This is because of the large diameter...
Asked in Movies
If you have 8liters 5liters and 3liters how will you make 4liters you have 8liters filled?
Pour the 8l into the 5l bottle, so you have 3l left in the 8l bottle and 5l in the 5l bottle. Then pour the 5l into the 3l bottle, so you have 2l left in the 5l bottle and 3l in the 3l bottle. Pour the 3l into the 8l bottle so you have 6l in the 8l bottle. Pour the 2l from the 5l bottle into the 3l bottle so you have 2l in the 3l bottle, 6l...
What is the function of the median fins of a fish?
These are the none paired fins of a fish (the dorsal, anal and caudal fins) and are thought to have a considerable effect on the motion and direction of a fish. Experimentation and research has been and is still being done to ascertain exactly the function of each of the 3 median fins. ...