Induced emf and current in a shrinking loopshrinking loop. a circular loop of flexible iron wire has an initial circumference of 161cm , but its circumference is decreasing at a constant rate of 13.0cm/s due to a tangential pull on the wire. the loop is in a constant uniform magnetic field of magnitude 1.00t , which is oriented perpendicular to the plane of the loop. assume that you are facing the loop and that the magnetic field points into the loop. find the magnitude of the emf emf induced in the loop after exactly time 8.00s has passed since the circumference of the loop started to decrease.

Explanation:

Let c be the circumference and r be the radius

c = 2πr , r = c / 2π , area A = π r² = π (c/2π )²  = (1/4π) x c²

flux (ψ) = BA = 1 X 1/4π X c²

dψ/dt = 1/4π x 2c dc/dt =1/2π x c x dc/dt

at t = 8 s

c = 161 - 13 x 8 = 57 cm , dc/dt = 13 cm/s  

e = dψ/dt = (1 / 2π )x 57 x 13 x 10⁻⁴ = 118 x 10⁻⁴ V.

it is called kinetic energy

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