. Một khung dây phẳng có diện tích 20 cm2 đặt trong từ trường đều. Véctơ cảm ứng từ vuông
góc với mặt phẳng khung dây và có độ lớn bằng 0,05 T. Người ta cho từ trường giảm đều đến
0 trong khoảng thời gian 0,01 s. Tính độ lớn suất điện động cảm ứng xuất hiện trong khung
dây.

What is the role of lenses in microscopy?

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc

1which body contains the majority of the mass in the solar system earth jupiter the moon the sun 2 what keeps the objects in the solar system such as planets orbiting around the sun the force of gravity the galaxy exerts on all objects within it including the solar system the great distance between the sun and the planets the sun's nuclear fusion which acts on each object the gravitational force between the sun and each object in the solar system