When discussing the earth's magnetic field we could say that the earth has a

geomagnetic north pole that is similar to the north pole of a magnet.

geomagnetic north pole that is similar to the south pole of a magnet.

magnetic core that has a charge similar to the south pole of a magnet.

random collection of magnetic poles dispersed in different locations.

In which of the following is positive work done by a person on a suitcase

Suppose that a cylindrical tank 6 meters high with a radius of 2 meters is filled to the rim with water. the tank is buried so that the top of the tank is 1 meter below ground level. the space above the tank is not filled with water. calculate how much work needs to be done by a pump to pump the water out of the tank up to ground level. (the water weighs 9,800 newtons per cubic meter.)

Question 1(multiple choice worth 2 points) in order to be considered work, the components that must be present are • a force and a movement in the same direction as the force an action which causes movement and an opposite reaction an action which causes no movement or reaction a force and a movement in the opposite direction of the force