How many factors does an experimenter change?

One.

Explanation:

In a scientific experiment, you should only change one factor, or variable, at a time. All the other factors need to stay the same, or constant. If you change more than one factor at a time, you won't be able to tell which factor is the reason for the change in results.

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

laticia draws the diagram below to show earth’s magnetic field.

answer

the arrows to the right of earth should point up.