An alpha particle (a helium nucleus) is lying at rest, att =0 an electric field given by e = 31+ 2) + 5k (n/c) applied on the particle for 5s then the electric field vanished; later on magnetic field given by b = (t + 5) + (3t+ -t) (mt) applied on the particle for 50 s. att - 8 s (take two when the magnetic field applied) find (a) the particle's speed, (b) the radius of the circle for the alpha particle trajectory, and (c) the period of the motion?

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:

the body's situation won't change the forces are equal opposit and on the same body

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!

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explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."