UKY PHY 232 Exam 1 2026 Questions
and Answers
4 Fundamental Forces - Correct answer-Strong force, weak force, electromagnetic
force, gravitational force.
Strong Force - Correct answer-Binds protons and neutrons in the nucleus.
Electromagnetic Force - Correct answer-Origin of friction and molecular binding.
(Nearly all forces which define your daily life are electromagnetic!)
Weak Force - Correct answer-Radioactivity.
Gravitational Force - Correct answer-Tides, objects falling, planetary motion.
Gravitational Force and "Charge" - Correct answer-F12 = - ((G * m1 * m2) / r^2) *
r12
- minus sign because it is an attractive force
- inverse square law
- mass is gravitational charge
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, Electric Charge - Correct answer-A manifestation of the fundamental force, the
electromagnetic force.
Repulsive Force - Correct answer-Push away, repel. (Ex: A woman electrically
charging her body, when her hair stands up. This is due to all the hairs on her head
becoming charged and exerting a repulsive force on the other hairs.)
Attractive Force - Correct answer-Pulling together. (Ex: A cat rubbing its body on
styrofoam peanuts while playing in a packing box, the styrofoam peanuts are stuck
to the cats body.)
The _________ is the force between electrically charged objects. - Correct answer-
electric force
Two Kinds of Electric Charges - Correct answer-positive and negative
______ identified as having a negative charge. - Correct answer-Electrons
______ identified as having a positive charge. - Correct answer-Protons
Neutrons are ______. - Correct answer-neutral
Atoms typically have ____ amounts of protons and electrons. - Correct answer-
equal
_____ are atoms with unequal number of electrons and protons. - Correct answer-
Ions
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and Answers
4 Fundamental Forces - Correct answer-Strong force, weak force, electromagnetic
force, gravitational force.
Strong Force - Correct answer-Binds protons and neutrons in the nucleus.
Electromagnetic Force - Correct answer-Origin of friction and molecular binding.
(Nearly all forces which define your daily life are electromagnetic!)
Weak Force - Correct answer-Radioactivity.
Gravitational Force - Correct answer-Tides, objects falling, planetary motion.
Gravitational Force and "Charge" - Correct answer-F12 = - ((G * m1 * m2) / r^2) *
r12
- minus sign because it is an attractive force
- inverse square law
- mass is gravitational charge
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, Electric Charge - Correct answer-A manifestation of the fundamental force, the
electromagnetic force.
Repulsive Force - Correct answer-Push away, repel. (Ex: A woman electrically
charging her body, when her hair stands up. This is due to all the hairs on her head
becoming charged and exerting a repulsive force on the other hairs.)
Attractive Force - Correct answer-Pulling together. (Ex: A cat rubbing its body on
styrofoam peanuts while playing in a packing box, the styrofoam peanuts are stuck
to the cats body.)
The _________ is the force between electrically charged objects. - Correct answer-
electric force
Two Kinds of Electric Charges - Correct answer-positive and negative
______ identified as having a negative charge. - Correct answer-Electrons
______ identified as having a positive charge. - Correct answer-Protons
Neutrons are ______. - Correct answer-neutral
Atoms typically have ____ amounts of protons and electrons. - Correct answer-
equal
_____ are atoms with unequal number of electrons and protons. - Correct answer-
Ions
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
