In a certain tidal channel in t hours the water rises 12sin [144tⁿ/5] meters above mean level. If is mean level at 2:am, find the height above the mean level at 7:am, 12 noon, 10:00pm on the same day.

Match these items. 1. coulombs __force 2. ohms __emf 3. centimeters __resistance 4. newtons __charge 5. volts __length

Where do magnetic lines of force enter earth?

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.