Answer:
See explanation
Explanation:
Since no figure was given, I'll explain how to theoretically solve this problem.
When a pin is resolved it has 2 reaction forces, one in the horizontal direction and one in the vertical. For this problem you could name these Ax and Ay. These two forces will act where the pin is, with Ax acting in the horizontal direction and Ay acting in the vertical.
When a rocker is resolved, it has one reaction force that acts perpendicular to the surface the rocker is on. This force can be thought of as B and it acts where the rocker is.
If you are determining the value of Ax, Ay, and B you should use static equilibrium and data given on the figure to solve for the reaction forces. The equations for static equilibrium (2D) are ,, and .
Answer:
Randomized Control Trial (RCT)
Explanation:
A Randomized Control Trial (RCT) study is a type of scientific study method, especially used in medical studies, where the subjects of the study are randomly assigned to two groups (Test and control groups). The test groups receive a medical intervention whose effect is to be studied, while the control group receives a placebo (a substance that is inert and has no therapeutic value). Notably in this study design is that apart from the medical intervention of interest, every other variable such as age, sex, race, etc. is controlled (the same across all the groups), to reduce the occurrence of biases, and this is to ensure that the difference in the outcomes between the test and control groups are as a result of the variable of interest alone. Randomization is also critical because it helps reduce recruitment bias and mimics natural occurrence as much as possible.
Answer:
Technician B only.
Explanation:
It is not necessary that all electric motors will use Direct current, some may also use Alternative current. Some electric motors that use DC may use brushes. There are two types of brushless motors that use alternative current.