một chất điểm chuyển động tròn với vận tốc góc w=at^2 +b trong đó a= 0.01 rad/s^2 b=0.05rad/s. Sau khoảng thời gian t=2 kể từ lúc bắt đầu chuyển động, tìm góc hợp bởi vecto gia tốc toàn phần và vecto vận tốc.

More solar radiation is absorbed by earth’s surface than by

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.

Apiece of metal 75g at 110°c is dropped in a container with 500g at 20°c. the h2o if temperature is 24°c find specific heat capacity of metal