A 40-turn coil has a diameter of 19 cm. The coil is placed in a spatially uniform magnetic field of magnitude 0.40 T so that the face of the coil and the magnetic field are perpendicular. Find the magnitude of the emf induced in the coil (in V) if the magnetic field is reduced to zero uniformly in the following times.

Complete Question

The  complete question is shown on the first uploaded image  

a

b

c

Explanation:

From the question we are told that  

  The number of turns is  N  =  40  turns  

   The  diameter is  

    The initial  magnetic field is

    The final magnetic field is  

Generally the cross-sectional area of the coil is mathematically represented as

=>    

=>    

At

The  induced emf is  

=>    

=>  

At

The  induced emf is  

=>    

=>  

At

The  induced emf is  

=>    

=>  

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.