Vật dao động với phương trình 5cos(4pit+pi/6) tìm thời điểm đi qua vị trí biên dương lần thứ 4

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false