Consider the two points B(2,4) and C(-1,-5) in the xy-plane. The coordinates are given in meters. A 20-N force is applied at point B at 120 degrees counterclockwise from the positive direction of the x-axis (where positive direction is horizontal to the right). Note that the force vector is also in the xy-plane (2D case). What is the magnitude of the moment of this force about point C?

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.

Aproduction line at v. j. sugumaran's machine shop has three stations. the first station can process a unit in 7 minutes. the second station has two identical machines, each of which can process a unit in 16 minutes (each unit only needs to be processed on one of the two machines). the third station can process a unit in 10 minutes. ▼ is the bottleneck station, with a bottleneck time of nothing minutes per unit (enter your response as a whole number).