^{4}\textrm{He}\) and is also sometimes written as \(_{2}^{4}\textrm{\alpha}\) A beta particle has a relative mass of zero, so its mass number is zero. As the beta particle is an ...

Try this quiz based on GCSE Computer Science past papers. Choose the topic you would like to revise and answer the questions. By working your way through the questions created by experts ...

Reuters, the news and media division of Thomson Reuters, is the world’s largest multimedia news provider, reaching billions of people worldwide every day. Reuters provides business, financial ...

Stage 2 extends your knowledge of Chemical Engineering subject matter, building depth in the areas of thermodynamics and heat and mass transfer and providing ... Representing chemical data; linear ...

Instances of “large-scale, systematic violence against civilian populations.” Although the term mass atrocities has no formal legal definition, it usually refers to genocide (as defined above), crimes ...