Cho 3 điện tích cùng dấu q1,q2,q3 đặt tại 3 đỉnh của tam giác ABC. Lực điện do q1,q2 tác dụng lên q3(F13,F23) và hợp của hai lực này tác dụng lên q3(F) liên hệ với nhau về độ lớn là F=F23=2F13. Tìm góc hợp bởi vectơ F và vectơ F13.

What term do psychologists use to designate our personal awareness of feelings, sensations, and thoughts?

What is the length x of the side of the triangle below? (hint: use the cosine function)

Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience. b. report the adverse drug experience to the irb only if there are several other occurrences. c. report the adverse drug experience as part of the continuing review report. d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.