Which statements are part of the safety protocol for this lab experiment? check all that apply. always wear safety goggles when performing an experiment. use caution when dropping objects and/or launching them into the air. use thermal gloves when handling the soda bottle and beanbag. use only the materials that your teacher provides or approves. check the soda bottle and its cap for cracks and chips prior to use. use only carbonated liquids in the soda bottle. report all accidents—no matter how big or small—to your teacher.

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.

The least penetrating form of radiation is

Acommon technique in analysis of scientific data is normalization. the purpose of normalizing data is to eliminate irrelevant constants that can obscure the salient features of the data. the goal of this experiment is to test the hypothesis that the flux of light decreases as the square of the distance from the source. in this case, the absolute value of the voltage measured by the photometer is irrelevant; only the relative value conveys useful information. suppose that in part 2.2.2 of the experiment, students obtain a signal value of 162 mv at a distance of 4 cm and a value of 86 mv at a distance of 5.7 cm. normalize the students' data to the value obtained at 4 cm. (divide the signal value by 162.) then calculate the theoretically expected (normalized) value at 5.7 cm.