A scientist claimed that fabric A is better able to resist fire than fabric B. Which option describes an experiment that will produce evidence that will support or refute her claim? A. Make detailed measurements of each type of fabric to determine the thickness of fibers.

B. Hold each type of fabric over a candle flame and time how long it takes for the fabric to start to burn.

C. Combine Fabric A and Fabric B and measure the temperature at which they start to burn.

D. Measure how long it takes for a specific amount of Fabric A to burn up completely.

Suppose water is leaking from a tank through a circular hole of area ah at its bottom. when water leaks through a hole, friction and contraction of the stream near the hole reduce the volume of water leaving the tank per second to cah 2gh , where c (0 < c < 1) is an empirical constant. a tank in the form of a right-circular cone standing on end, vertex down, is leaking water through a circular hole in its bottom. (assume the removed apex of the cone is of negligible height and volume.) (a) suppose the tank is 20 feet high and has radius 8 feet and the circular hole has radius 2 inches. the differential equation governing the height h in feet of water leaking from a tank after t seconds is dh dt = − 5 6h3/2 . if the height of the water is initially 8 feet, how long will it take the tank to empty? (round your answer to two decimal places.)

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

How to calculate voltage drop in a series circuit