Apurple beam is hinged to a wall to hold up a blue sign. the beam has a mass of mb = 6.2 kg and the sign has a mass of ms = 17 kg. the length of the beam is l = 2.48 m. the sign is attached at the very end of the beam, but the horizontal wire holding up the beam is attached 2/3 of the way to the end of the beam. the angle the wire makes with the beam is θ = 33.2°.

there are no correct statementd on the list of choices you provided.

gravity

explanation:

the right answer is 0.3 meters per second

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.