A researcher who does not want to manipulate or interfere with the behavior of research subjects would conduct a study. A.
cross-sectional
B.
naturalistic observation
C.
case
D.
longitudinal

Please select the best answer from the choices provided

A
B
C
D

In the first law of thermodynamics, triangle e=q-w, what does q stand for

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f

What does the law of conservation of mass state?