Physics Sem 2
Points Possible:100
Name:Mir Ali
Date:5/23/2019
In this test, you will apply what you have learned in the semester. Answer the questions
below. Show all your work on the test and submit it to your teacher when you are done.
Question 1: Atoms (8 points)
a. Besides protons, what other particles make up an atom? Write 2 - 3 sentences describing how
the electrostatic force acts between a proton and each of these other particles. (4 points)
, An atom consists of protons, neutrons, and electrons. Electrostatic force does not work
between the proton and the neutron. The electrostatic force acts on an atom in two different
ways. The first one is when it binds the electrons that are negative to the protons that are
positive. The second is when the nucleons are bound to each other by strong nuclear force,
and the electrostatic force determines the number of protons and neutrons.
b. Identify the element whose atoms have 8 protons. Is it a metal, nonmetal, or metalloid? Write
1 - 2 sentences describing how an atom of this element changes when it forms an ionic bond. (4
points)
The element that has 8 protons is oxygen, and oxygen is a nonmetal element. When an atom
of oxygen forms an ionic bond, the atom want to get another electron from something, which
will cause a chain reaction and the oxygen would be unbalanced.
Question 2: Fluids (6 points)
A robotic submersible is being lowered into the water. What happens to the buoyant force as
the submersible enters the water? Write 2 - 3 sentences explaining your reasoning. (6 points)
As a robotic submersive is being lowered into the water, the buoyant force on the