khi lực (không đổi) tác dụng lên vật trong khoảng thời gian ngắn thì biểu thức nào sau đây là xung của lực trong khoảng thời gian ?

Achemistry student needs of 40ml diethylamine for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of diethylamine is 0.7 . calculate the mass of diethylamine the student should weigh out. round your answer to significant digits.

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?