HELLPP) In an experiment:
A. both variables are changed.
B. there are at least six variables.
C. everything ís the same for both the control and the experimental
D. one variable is changed to examine its effect.
group.

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

Drag each tile to the correct box. tiles bra i sequence

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.