If you do business online, Charge.com will enable you to accept credit cards on your website (and eBay) in real-time, and we will also give you our simple-to-use, web-based credit card processing virtual terminal so you can easily process phone and mail order transactions manually.
Q: A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 183 MeV, and the relative biological effectiveness (RBE) of this type of radiation is 16. The beam is directed onto a 0.220-kg tumor, which receives a biologically equivalent dose of 153 rem.
What is helium used for? Helium is put into balloons to help float Helium is easily detected in minute quantites, and has a very small molecule. So helium is also used for checking vacum and other â¦enclosures for leaks. Helium is used in some noble gas (neon) signs, possibly mixed with other gases. Liquid helium is used as a coolant, like for MRI magnets and such. Liquid helium acts as a study in physics for superfluids (see link below).