1. An experiment is performed to obtain the value of a physical property. If the true (i.e., correct) value of the property is 50 and the measured (i.e., experimental) value is 30 , the percent error of the experimental result is:
2. A battery operating a large flashlight produces a current of 2 amperes in a lightbulb that has a resistance of 11.8 ohms. The voltage of the battery is:
3. In a pendulum experiment the pendulum moves from one side to the other side in 0.1 second. Calculate the period of the pendulum.
4. Calculate the period of a pendulum that has length = 0.3 m.
5. In an experiment to measure the angular resolution of the human eye, a test chart, can just be detected at a distance of 5.3 m. What is the approximate angular resolution of this eye in milliradians?