Sheeba is trying to determine how muisc affects a person's pulse rate. she has her mother listen to classic rock at a high volume for 30 minutes, her younger brother listen to classical muisc quietly while he sleeps at night, and her grandmother listen to 2 hours of rap at a medium volume. she records each person's pulse before and after listening to the muisc. what is missing from sheeba's scientific investigation? (1 point)

test subjects willing to participate in the experiment

a specific hypothesis to test with a controlled experiment

experimental data that can be recorded and analyzed

an experiment that takes initial and final measurements

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:

the answer is 1 i believe

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.