How much work is performed by a student pulling a sled using 175 N of force over a distance of 200 meters?

35000Joules

Explanation:

Work is done whenever force moves a body through a particular distance.

Work done = force × distance

Force = 175 newton

Distance = 200 meters

Work done = 175newton × 200meters

Work done = 35000 Joules or 35Kilo joules

The work done is 35000joules

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

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.