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Remember that to calculate resistances in parallel, the formula we use is:
1/Rt = 1/R1 + 1/R2 etc.
So that gives us:
1/Rt = 1/300 + 1/250 = 0.0073
To find the total resistance we just take the reciprocal of this:
Rt = 1/0.0073 = 136.4 Ohmssee more
Remember the rules for differentiation?
We take each term which looks like axn where a and n are just numbers and we turn it into: (an)xn-1
So for this example, we go term by term and get:
f'(x) = 6x2 + 5x0 + 0 = 6x2 + 5see more
-> Repeatable - the same design can be achieved every time with very good accuracy.
-> Economic - hundreds of copies of the design can be produced before the machinery needs to be maintained.
-> Intricate - intricate designs can be achieved very easily.
-> Quick - designs can be produced very quickly
-> Accurate - designs are produced to a high level of accuracy each time.
-> Little waste - there is very little flash and hence very little waste plastic.
-> Costly: the capital costs of machinery, development and maintenance are high.
-> Restricted: designs are restricted by what can be achieved with the die.
-> Materials: restricted to thermoplastic materials.see more