Trình bày nội dung hai nguyên lí cơ bản của phép biện chứng duy vật và rút ra những ý nghĩa phương pháp luận của nó. Anh/chị đã vận dụng quan điểm toàn diện, lịch sử cụ thể, quan điểm phát triển vào việc học tập của bản thân như thế nào ?

The slotted link is pinned at o, and as a result of rotation it drives the peg p along the horizontal guide. compute the magnitude of the velocity and acceleration of p along the horizontal guide. compute the magnitudes of the velocity and acceleration of p as a function of θ if θ=(3t) rad, where t is measured in seconds.

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to. in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic