RIO SALADO PHYSICS 112 MIDTERM EXAM
2025/2026 COMPLETE ALL 250 TESTED QUESTIONS
WITH CORRECT DETAILED AND VERIFIED
Page | 1
ANSWERS| GURANTEED PASS| TOP RATED A+.
RIO SALADO PHYSICS 112
Pass the Physics 112 at Rio Salado 2025/2026 with confidence. This exam
resource features questions in areas like: core physics concepts such as
motion, forces, energy, and electricity. It is taken by students in STEM
programs or general education requirements needing a solid foundation in
physical science.
Three charged particles are held in place. Particle A has a net charge of
+2 μC and is at (0, 0) m. Particle B has a net charge of -4 μC and is placed
a (0.5, 0) m. Particle C has a net charge of -4 μC and is at (0, 0.5) m.
What is the magnitude of the net force on particle A?
A) 0.41 N
B) 0.29 N
C) 0.58 N
D) 0.17 N ....... ANSWER .......A) 0.41 N
Which of the following statements regarding static electric charge is most
accurate?
A) Force is proportional to the distance between the charged particles.
B) Force is proportional the inverse distance between the charged
particles.
, C) Force is proportional to the inverse square distance between the
charged particles.
D) Force is proportional to the square of the distance between the
Page | 2 charged particles. ....... ANSWER .......C) Force is proportional to the
inverse square distance between the charged particles.
Two neutral metal blocks are in physical contact side-by-side. Block A is
on the left, and block B is on the right. A positively charged rod is near
the left side of block A (see below). With the positive rod still present, the
blocks separate. As a result, block B will have a net charge that is
A) positive.
B) negative
C) neutral
D)not enough information. ....... ANSWER .......A) positive
Three charged particles are held in place. Particle A has a net charge of
+2 μC and is at (0, 0) m. Particle B has a net charge of +4 μC and is
placed a (0.5, 0) m. Particle C has a net charge of -4 μC and is placed at
(0, 0.5) m. What is the angle of direction of the net force acting on
particle A?
A) 45°
B) 135°
C) 225°
D) 315° ....... ANSWER .......B) 135°
, Which of the following statements concerning the structure of an atom is
accurate?
A) Electrons orbit the nucleus exactly the same way that planets orbit the
Page | 3 Sun.
B) Neutrally charged atoms contain equal amounts of protons and
electrons.
C) The nucleus of an atom is composed of protons and electrons.
D)None of the above statements are accurate. ....... ANSWER .......B)
Neutrally charged atoms contain equal amounts of protons and
electrons.
The property of matter that is responsible for static electric effects is
A) charge.
B) mass.
C) momentum.
D) density. ....... ANSWER .......A) charge
A positively charged plastic balloon filled with air will stick to a neutrally
charged nonmetal ceiling. Which of the following is the most likely
explanation for this behavior?
A) Some of the charge on the balloon transferred to the ceiling through
conduction.
B) The ceiling already had a net positive charge.
C) The ceiling already had a net negative charge.
, D) The balloon caused the ceiling to polarize, which created a net
attracting force between the polarized ceiling and the balloon. .......
ANSWER .......D) The balloon caused the ceiling to polarize, which
Page | 4 created a net attracting force between the polarized ceiling and the
balloon.
Two charged particles each with a net charge of -q are a distance r apart.
The electric force F is measured. The distance between the particles then
doubles to 2r, and the amount of charge on BOTH charges doubles to -
2q. Relative to the original force, what is the new electric force?
A) 1/2 F
B) 2 F
C) 4 F
D) F ....... ANSWER .......D) F
Particle A has a net charge of -5 μC. Particle B has a net charge of +10
μC. Which of the following is the largest force?
A) The force of particle A on B
B) The force of particle B on A
C) They apply the same force on each other.
D) More information is needed (the distance between the particles needs
to be known). ....... ANSWER .......C) They apply the same force on
each other.
Which of the following particles carries the positive type of charge?
A) Protons
2025/2026 COMPLETE ALL 250 TESTED QUESTIONS
WITH CORRECT DETAILED AND VERIFIED
Page | 1
ANSWERS| GURANTEED PASS| TOP RATED A+.
RIO SALADO PHYSICS 112
Pass the Physics 112 at Rio Salado 2025/2026 with confidence. This exam
resource features questions in areas like: core physics concepts such as
motion, forces, energy, and electricity. It is taken by students in STEM
programs or general education requirements needing a solid foundation in
physical science.
Three charged particles are held in place. Particle A has a net charge of
+2 μC and is at (0, 0) m. Particle B has a net charge of -4 μC and is placed
a (0.5, 0) m. Particle C has a net charge of -4 μC and is at (0, 0.5) m.
What is the magnitude of the net force on particle A?
A) 0.41 N
B) 0.29 N
C) 0.58 N
D) 0.17 N ....... ANSWER .......A) 0.41 N
Which of the following statements regarding static electric charge is most
accurate?
A) Force is proportional to the distance between the charged particles.
B) Force is proportional the inverse distance between the charged
particles.
, C) Force is proportional to the inverse square distance between the
charged particles.
D) Force is proportional to the square of the distance between the
Page | 2 charged particles. ....... ANSWER .......C) Force is proportional to the
inverse square distance between the charged particles.
Two neutral metal blocks are in physical contact side-by-side. Block A is
on the left, and block B is on the right. A positively charged rod is near
the left side of block A (see below). With the positive rod still present, the
blocks separate. As a result, block B will have a net charge that is
A) positive.
B) negative
C) neutral
D)not enough information. ....... ANSWER .......A) positive
Three charged particles are held in place. Particle A has a net charge of
+2 μC and is at (0, 0) m. Particle B has a net charge of +4 μC and is
placed a (0.5, 0) m. Particle C has a net charge of -4 μC and is placed at
(0, 0.5) m. What is the angle of direction of the net force acting on
particle A?
A) 45°
B) 135°
C) 225°
D) 315° ....... ANSWER .......B) 135°
, Which of the following statements concerning the structure of an atom is
accurate?
A) Electrons orbit the nucleus exactly the same way that planets orbit the
Page | 3 Sun.
B) Neutrally charged atoms contain equal amounts of protons and
electrons.
C) The nucleus of an atom is composed of protons and electrons.
D)None of the above statements are accurate. ....... ANSWER .......B)
Neutrally charged atoms contain equal amounts of protons and
electrons.
The property of matter that is responsible for static electric effects is
A) charge.
B) mass.
C) momentum.
D) density. ....... ANSWER .......A) charge
A positively charged plastic balloon filled with air will stick to a neutrally
charged nonmetal ceiling. Which of the following is the most likely
explanation for this behavior?
A) Some of the charge on the balloon transferred to the ceiling through
conduction.
B) The ceiling already had a net positive charge.
C) The ceiling already had a net negative charge.
, D) The balloon caused the ceiling to polarize, which created a net
attracting force between the polarized ceiling and the balloon. .......
ANSWER .......D) The balloon caused the ceiling to polarize, which
Page | 4 created a net attracting force between the polarized ceiling and the
balloon.
Two charged particles each with a net charge of -q are a distance r apart.
The electric force F is measured. The distance between the particles then
doubles to 2r, and the amount of charge on BOTH charges doubles to -
2q. Relative to the original force, what is the new electric force?
A) 1/2 F
B) 2 F
C) 4 F
D) F ....... ANSWER .......D) F
Particle A has a net charge of -5 μC. Particle B has a net charge of +10
μC. Which of the following is the largest force?
A) The force of particle A on B
B) The force of particle B on A
C) They apply the same force on each other.
D) More information is needed (the distance between the particles needs
to be known). ....... ANSWER .......C) They apply the same force on
each other.
Which of the following particles carries the positive type of charge?
A) Protons
