A constant applied force p of 11.0 N pushes a box with a mass =7.00 kg a distance =15.0 m across a level floor. The coefficient of kinetic friction between the box and the floor is 0.110. Assuming that the box starts from rest, what is the final velocity f of the box at the 15.0 m point?

If there were no friction between the box and the floor, what applied force new would give the box the same final velocity?

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

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.