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...working of metals and give the advantages of each...Manufacturing: 1.1 Making a product - In this course you are going to study how designs are turned into products: the resources, materials and methods used; and specifically the set of activities that goes under the heading of 'manufacturing'. Any design is only useful if it can be made into a product. Remember that an...

...social injustices. In practice, few energy sources come close to these ideals, but renewable energy sources are generally more sustainable than fossil or nuclear fuels: they are essentially inexhaustible, and their use usually involves fewer health hazards and much lower emissions of greenhouse gases and other pollutants. So, where do renewable energies come from, and why...

...work this out you just need to add in the extra distance from the Earth’s surface to the ISS (rEarth+ISS), remembering that this is 400 km. You should now convert this to metres as follows. 400 km = 400 000 metres = 4 × 105 m. So, rEarth+ISS = (6.37 × 106 m) + (4 × 105 m) = 6.77 × 106 m. Equation 7 is now adapted to Equation 9 to take this extra distance into...