Cho con lăn c không trượt có bán kính r, thanh truyền AB =2R, tay quay oa =4R
Tính vận tốc góc thanh Ab

What sort of waves exhibit the doppler effect?

The radius of a sphere is increasing at a rate of 9 cm/ sec. find the radius of the sphere when the volume and the radius of the sphere are increasing at the same numerical rate.

Provides most of the energy used in the world today. question 4 options: wind fossil fuel moving water sunlight