P2_3 Firing from the Gulf

In the 2009 lm Transformers: Revenge of the Fallen, a railgun is red from the Gulf of Suezto the top of the Great Pyramid of Giza in approximately 5 seconds. We consider parabolicmotion to calculate the muzzle velocity of the projectile to be 28000 ms^(-1). We then calculatedthe acceleration and the necessary force required within the railgun. Finally, the energy requiredto achieve the desired result was found to be 1.96x10^9 J

P2_1 How long would it take for Britain to leave Europe?

In this paper, we have calculated how long it would take for mainland Britain to move awaycompletely from the Eurasian tectonic plate; using a powerful hypothetical motor, powered by£350 million a week. The amount of water displaced by the Great British boat was also calculated. It was found that 7.34x10^19kg of water would be displaced and that per week Britain could move 422m, taking 87 years to leave Europe

P2_4 A Very Light Balloon

In this paper we have performed an experiment to verify whether the pressure inside a party balloon is equal to ambient atmospheric pressure, and then performed further calculation to find how powerful a light source would be needed to inflate a party balloon using radiation pressure alone. It was found that the pressure inside a balloon was within five percent of ambient atmospheric pressure, and that a light source of multiple terawatt light output would be needed to inflate a balloon, with a specific value of 8.9x10^12 W for it to inflate to a standard size

P2_6 The Power of Moonlight

In this paper we investigate the concept of using the Moon as an energy producing Mega-structure, by covering its surface in solar panels. We find that the energy yield, in 28 days, from using modern-day solar panels is 5.327x10^16 J and that 815 identical structures would be required to meet the global energy usage of 2016 (5.656x 10^20J)

P2_5 The Knitters Dilemma

In this paper we calculated the total length of time a knitted jumper has to be worn to balanceout the energy used in creating the jumper. Experimental values were found for the length of time to knit a jumper. The amount of calories burnt per hour of knitting and the time taken were then used to calculate the overall energy used. The rate of heat loss was calculated for a thin cotton t-shirt and for an aran weight jumper before the total length of time it would have to be worn to make back this energy was calculated. We have found that the amount of energy taken to knit a jumper is 1.10x10^7 J and the jumper would have to be worn for 3 hours to balance this energy