A41.0 kg child swings in a swing supported by two chains, each 2.98 m long. (a) if the tension in each chain at the lowest point is 348 n, find the child's speed at the lowest point. m/s (b) what is the force exerted by the seat on the child at the lowest point? (neglect the mass of the seat.) n (upward)

Two thin 80.0- cm rods are oriented at right angles to each other. each rod has one end at the origin of the coordinates, and one of them extends along the x- axis while the other extends along the yaxis. the rod along the x- axis carries a charge of - 15.0 μ c distributed uniformly along its length, and the other rod carries 15.0 μ c uniformly over its length. find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?