Trong hệ tọa độ descartes oxyz phương trình chuyển động nào dưới đây ứng với quỹ đạo là đường thẳng đi qua 2 điểm A(9:0) B(0:9) là

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

The mantle is made up of which structural zones?