He average speed in miles per hour of a tsunami can be modeled by the function 푠, where d is the average depth in feet of the water over which the tsunami (푑)=3.86푑travels. If the storm is moving at an average speed of 503 mph, what is the depth of the water rounded to the nearest foot?

falling water hydro = water .. spectcular places these plants are

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.