Randomized Controlled Studies: This is a study in which 1) There are two groups, one treatment group and one control group. The treatment group receives the treatment under investigation, and the control group receives either no treatment (placebo) or standard treatment. 2) Patients are randomly assigned to all groups.
winds that blow in a steady direction can move a dune. such wind will consistently pick up sand from one side and deposit it to a other side. this causes the entire dune to s â¦ lowly move in the direction if the wind.
In which kind of wave do the particles of the medium move at right angles to the direction in which the wave is traveling Transverse In what way do the particles in the wave move when surface waves combine the properties of transverse and longitudinal waves The more energy it has, the bigger the amplitude and vice- versa What kind of wave is generated by pulling a rope tied to a door knob up and down