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The key to solving this is remembering that momentum is conserved. The large, initial particle has no speed so its momentum is zero. Therefore, if we add together the momenta of the final particles we als...

Read as much as possible and consult multiple sources. When you explore the different ways in which historians write you can pick up manerisms that develop your own writing skills and thus give your writi...

For any question the you should first consult the mark schemes and ensure that you are understanding exactly what they are saying. For a definition question repition is key, making sure that you understan...

With high initial setup costs and a lack of a steady revenue stream, it is a common situation for a new business to encounter cash flow problems while waiting for funds from its debtors to arrive. An over...

There are 6 irregular verbs in the present subjunctive tense; dar, ir, ser, haber, estar, saber.

The conjugations are as follows:

Dar: dé, des, dé, demos, deis, den

Ir: vaya, vayas, v...