A student places a strip of magnesium metal in a test tube containing hydrochloric acid. When the metal strip comes in contact with the acid, bubbles begin to form. The student holds a lit wooden splint over the mouth of the test tube. The flame ignites the gas exiting the test tube and produces a single high-pitched sound. What can the student determine from this burning splint test?

answer: a tank of height h is filled with water and sits on the ground. water squirts from a hole at a height y above the ground and has a range r. for two y values, 0 and h, r is zero. determine the value of y for which the range will be a maximum.

explanation:

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.