2 benefits of using models in science

I just need a full answer here not only so I can answer the question, but also so that I can learn. Locate the main groups of elements in each column on the periodic table, and identify the number of valence electrons there are in each element in a

Mrs. Newman's class decides to perform an experiment during a class connect session to determine how long it takes different objects to hit the floor when dropped from the student's desk. Each student dropped three notebooks, one weighing 0.

Since all objects are 'weightless' for an astronaut in orbit, is it possible for astronauts to tell whether an object is heavy or light? Think about it, think of newton's laws, the equations and then explain your reasoning.

A 32 kg child puts a 15 kg box into a 12 kg wagon. The child then pulls horizontally on the wagon with a force of 65 N.

A force of 10 n is applied horizontally to a 2.0-kg mass on a level surface. the coefficient of kinetic friction between the mass and the surface is 0.20. if the mass is moved a distance of 10 m, what is the change in its kinetic energy?

Rachel is making cookies. She pours 1/2 cup of oil into a bowl, followed by 1 cup of water. The oil rises to the surface of the bowl. Why?

Fluids can flow and change shape to fit their containers. Which two states are fluids?

Is jacob barnes a turd face?

A system absorbs 12 j of heat from the surroundings; meanwhile, 28 j of work is done by the system. what is the change of the internal energy δeth of the system?'

Which of the following correctly arranges the planets by the size of their diameter in increasing order?