3 The diameter of an atom is about 10-10 m and that of a nucleus is about 10-15 m. Calculate the size of the nucleus or atom in each of the models in the table, and give an example of an object with a size of the same order of magnitude as your calculated size. Object used to Model 'Atom' Object used to 'Nucleus' model the atom object size model the nucleus object size А The Earth 107 m B A classroom 10 m C An apple 10 cm (6 marks)​

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

the higher the current the higher the mag field around it the higher the influence on the compass

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.