A mass of 3000 kg moves uniformly on the horizontal line, TO the LEFT. Assume the drag force is 0.3 times the weight of the vehicle. a. Tell the forces acting on the car, state the characteristics of each force.

b / Express the forces on the scale of 1 cm corresponding to 3000N.
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answer: a ball

explanation: because it will bounce

d. air pressure decreases as altitude increases.

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.