: Một quả cầu nhỏ bằng kim loại có khối lượng m = 1,6g, được treo vào điểm O bằng sợi dây không dãn. Tích điện cho quả cầu với điện tích q = 4.10-8 C. rồi đặt hệ trong
một điện trường đều có đường sức thẳng đứng, hướng lên, có độ lớn 4.105V/m. Lấy g =
10 (m/s2
). Tính lực căng của dây

explanation: magnetic pole, region at each end of a magnet where the external magnetic field is strongest. the south-seeking pole, or any pole similar to it, is called a south magnetic pole. unlike poles of different magnets attract each other; like poles repel each other.

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation:

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation