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Two current carrying wires are placed next to each other and anti-parallel currents are allowed to flow. Is the magnetic force between the wires attractive or repulsive?

Consider the first wire on the left with current running up (arbitrary choice). By the 1st right hand rule, the magnetic field anywhere on the right will be into the page. By the 2nd right hand rule, the...

Answered by • Physics tutor

1233 Views

Convert the German phrase Die Polizei verhaftet einen Mann to passive

Der Mann wurde von der Polizei verhaftet.

Answered by Alexander M. • German tutor

1094 Views

Explain why hard engineering approaches are still used to protect some coastal areas?

Cost benefit analysis if often used to establish whether hard engineering strategies should be used to protect an area of coastline. The general equation used is the following: Cost Benefit= Value o...

Answered by Sophia T. • Geography tutor

7791 Views

Compare how poets present attitudes towards a romantic love in ‘Love’s Philosophy’ and in one other poem from ‘Love and relationships’.

‘Love’s philosophy’ by Shelley and ‘When we two parted’ by Lord Byron both explore desperation for romantic love through nature. Whilst they both embrace nature, both poets use this semantic field differe...

Answered by Megan S. • English tutor

19163 Views

A chemist needs to neutralise aqueous hydrochloric acid solution (currently pH 1) to pH 7 or higher, so it can be safely disposed of. They have access to solid NaCl, NaBr and Na2CO3.

A) Which of the three solids should they add to the acid solution to achieve this?
ans: Na2CO3 [1 mark]
B) Hence give a balanced chemical equation showing the reaction of the hydrochloric acid w...

Answered by Alexander N. • Chemistry tutor

1348 Views