A traffic cop is an officer that works within the traffic bureau of the police department. Traffic cops are responsible for the safety of all motorists, bicyclists, and pedestrians on the roadways.They patrol roads, issue tickets and direct traffic.o be hired as a traffic cop, interested candidates must apply to the police department. Candidates need to have high school diplomas or the equivalent; they also need to be at least 21 years old and be U.S. citizens.
Step 3. Use the equation of the calibration curve to adjust measurements taken on samples with unknown values. Substitute the measured value as x into the equation and solve for y (the true value). In the example from step 2, y = 1.05x + 0.2. Thus, a measured value of 75.0, for example, would adjust to y = 1.05(75) + 0.2 = 78.9.
For any particular radioisotope the count rate and time will be different but the shape of the curve will be the same. The easiest way to measure the half-life from the graph is to. 1. Read the original count rate at zero days. On our graph the reading is 1640 counts. 2. Go down to half the original count rate (820 counts) and draw a horizontal line to the curve. Then draw a vertical line down from the curve. You can read off the half-life where the line crosses the time axis. On our graph the half-life is 20 days.