A sound wave with a frequency of 13.9 kHz emerges through a circular opening that has a diameter of 0.200 m. Find the diffraction angle when the sound travels (a) in air and (b) in water. (Note: The speed of sound in air is 343 m/s and the speed of sound in water is 1482 m/s.) (a) Number (b) Number i Units Units

1.3 The Role of Units in Problem Solving A particular convenience store offers a drink called the "MegaGulp". If the cup holds 107 fl oz. of liquid and we treat the "Mega" in the name as a metric prefix, how many mL are in a "Gulp"? O 0.000107 O 0.000000362 O 316000000 O 0.00317 Save for Later Submit Answer

The laboratory balances have a precision of 0.01g. If you are obtaining the mass of an approximately 5 gram sample, which of the following is a proper way to record this measurement in your laboratory notebook and on your report sheets.     4.92 g     4.92     4.925 g     5.00 g