First analyze the force that is acting on each charge. The force is determined by the two. objects interacting. If you start with Case 1, the charges are q and 4 q with a separation of d. That means. the force is 4kqq/d2 .
DNA is the most powerful tool available for identification in forensic investigations. Because of its ability to link physical evidence found at a crime scene to a single person, it is often referred to as a âdigital fingerprint.â This method is so precise that it can ensure pinpoint accuracy, down to one in a billion.
At the heart of DNA testing is the molecule DNA. It carries our genetic code and determines traits from eye colour to aspects of our personalities. Every cell in our bodies-from heart to skin, blood to bone-contains a complete set of our DNA.he more identical markers there are in two samples, the more accurate the test. However, testing more markers takes more time and is more expensive. Forensic DNA tests usually examine six to ten markers.