(controlled variable). By attaching more paperclips the time it takes for the rotocopter to fall down will probably be decreased‚ since there will be added weight which weigh down the rotocopter and make it fall down faster. To observe this relationship‚ the time (in seconds ±0.01s using a stopwatch which measured to the nearest centisecond) it took for the rotocopter to reach the ground was measured for the five different weighted rotocoptors (0‚ 1‚ 2‚ 3‚ 4 paperclips attached – each weighing 1.08 g ±0
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Only one hand was used to pick up the material while the other hand held the cup. Afterward‚ the number of paperclips in the cup were recorded. Scissors represent Huxley’s sparrow’s beak shape in the experiment. Then‚ the same scissors were used to pick up and place unpopped popcorn in Styrofoam cup for 20 seconds. The picked up popcorn were also recorded. Next
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Procedure 1. Obtain 8 large paperclips‚ a ruler‚ and masking tape. 2. Bend paperclip to form a “U” or “V” shape so the ends are 1/2 centimeter apart. 3. Put masking tape across the “legs” of the paperclip to maintain the end distance of your caliper. Label the paperclip end distance on masking tape 4. Repeat steps 2 and 3 to make calipers with measurements of one‚ two‚ three‚ four and five cm. For wider distances‚ use sticky tape to hold an opened paperclip onto the zero mark of a ruler
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Aim: To find the mass in grams (m) of a paperclip. Apparatus: Procedure: 1. Using a piece of string‚ the external circumference(C) of the small test tube was found and was then used to find A ‚ the cross sectional area of the small test tube A=C24π . 2. The beaker was placed under the test tube after it was clamped on the retort stand to collect excess water. The large test tube was filled with water. After which‚ the small test tube which had a fitted scale was placed inside to float
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attached to a paperclip‚ affect the time it takes for the cake mold to reach the ground? Hypothesis: As the surface area of the paper cake mold increases‚ the time it takes for the parachute to reach the ground will also increase‚ which would show an increase in the air friction. Variables: Dependent Variable: Falling time of the object. Independent Variable: Surface area of the paper cake mold. Controlled Variables: * Mass of the paper cake mold * Mass of the paperclip * The height
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different distances you will have found for different parts of our bodies are because our touch sensors are not evenly spread out. In our fingertips‚ they are only millimeters or so apart‚ so you only needed a few millimeters between the tips of your paperclip to feel the two points. On our backs‚ the sensors are more spread out and you would need to separate the points by several centimeters to tell there were two of them. The tips of our tongues have the closest packed touch sensors‚ with up to 200 per
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right‚ they can hold tight enough to support your paper clip. The paperclip is not truly floating‚ it is being held up by the surface tension. Many insects‚ such as water striders‚ use this "skin" to walk across the surface of a stream. The project above is a DEMONSTRATION. To make it a true experiment‚ you can try to answer these questions: 1. How many paperclips can the surface tension hold? 2. Does the shape of the paperclip affect its floating ability? 3. What liquids have the strongest
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When you mix copper‚ silver‚ and nitrate together‚ you will end up with silver nitrate solution will turn blue (it has become copper nitrate). On the piece of copper‚ there would be a coating of solid silver. If a chemical reaction is going to be observed when chemicals are mixed‚ heated or any other means of altering the substance‚ then we will be able to predict the products formed. If it is observed that in the original versus the changed substance no new substances are formed‚ the change is reversible
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Chosen practical example: 1. Load-limited design – wire ropes 2. Energy-limited design – spring in pegs 3. Deflection-limited design – paperclips 1. Load-limited design – wire ropes Wire ropes function as a tie. Hence the constraint is to withstand a certain tensile stress before failing by fracture. σ_f=(CK_1c)/√(πa_c ) If the objective to maximize the allowable stress‚ then‚ the material indices is simply M=K_1c CES (Cambridge Engineering Selector) is utilized to plot
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operation was called Operation Paperclip. Operation Paperclip took place right after the war were the US recruited many Nazi generals and scientist.(Operation Paperclip) One of the people that they recruited was Dr. Walter Schreiber. He was a general for a concentration camp that was brought to the US through Operation Paperclip. Once they brought over Werhner Von Braun they started immediately on a rocket to start the Space Race.("Remembering ’Operation Paperclip’
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