Cho 1 số tụ điện giống nhau có cùng điện dung C=3yF. Nêu cách mắc dùng ít tụ nhất đẻ được bộ tụ có điện dung C=5uF

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

What happens when you slowly pulled the carboard?

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".