Brock brings a magnet near a metal object. a magnetic force acts on an object, pulling it upward. which of the following best describes the magnetic force?
a) frictional force
b) contact force
c) gravitational force
d) a force that acts at a distance

Option (d) is the correct answer.

Explanation:

Magnetic force is the force which acts from one charged object to another charged or neutral object.

This force acts at a certain distance and if the charged objects are oppositely charged then they attract each other. When the charged objects have same charge then the objects repel each other.

Thus, we can conclude that a force that acts at a distance best describes the magnetic force.

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.