An 0.252 kg object is initially moving at 23.4 m/s [E] along the ice. The coefficient of kinetic friction for the object and the ice is 0.00500. a. What is the speed of the object after travelling 48.3 m?

b. Once the ice become rougher, the coefficient of kinetic friction increases to 0.0475. How far will the object travel if its initial and final speeds are the same as before?

the results is a decrease in air temperature with an increase of altitude.

explanation:

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

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.