Determine whether the study depicts an observational study or an experiment. obese adults are randomly divided into two groups. one group replaces one meal a day with vegetables; the other does cardio for 30 minutes a day. after 3 months comma each group is weighed to compare weight loss. nothing nothing nothing choose the correct description of the study.

For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.

Which one of the following faults cause the coffee in a brewer to keep boiling after the brewing cycle is finished? a. an open circuit in the heating element b. a short circuit at the terminals c. welded contacts on the thermostat d. a leak around the gasket

On solidification from a melt, the polymer polyethylene forms a semi-crystalline spherulite structure. (i) sketch an individual spherulite and label the amorphous and crystalline regions. (ii) draw a schematic to show the changes in specific volume with temperature during cooling from the melt, comparing it to the theoretical extremes of fully crystalline and fully amorphous (indicate tm and tg)