RIO SALADO PHY 112 MIDTERM |ACTUAL
QUESTIONS AND VERIFIED ANSWERS|BRAND NEW
2026-2027 UPDATE|GRADED A+
Question 1
A vector measurement is best described as:
a. A measurement that has magnitude
b. A measurement that has direction
c. Both A and B
CORRECT ANSWER
c. Both A and B
Question 2
The sum of vectors A and B where A = <3,2> and B = <-1,4> is:
a. <2,6>
b. <4,6>
c. <7,1>
CORRECT ANSWER
a. <2,6>
Question 3
The x component of a force that is 20 N at 30˚is:
a. 17.3 N
b. 20 N
c. 10 N
1
,CORRECT ANSWER
a. 17.3 N
Question 4
The magnitude of a force that has an x component of 10 N and a y component of 20 N is:
a. 30 N
b. 500 N
c. 22 N
CORRECT ANSWER
c. 22 N
Question 5
A force is best described as:
a. The ability to do work
b. A push or pull
c. The rate at which energy is transferred
CORRECT ANSWER
b. A push or pull
Question 6
A scalar measurement is one that has:
a. Magnitude
b. Direction
c. Both A and B
2
,CORRECT ANSWER
a. Magnitude
Question 7
property of matter that causes electrical effects
o Symbol: q
o Units: Coulomb or C
o Conserved value
fundamental property of matter responsible for electrical effects; all atomic matter contains
____
o + or -
o Protons: +
o Electrons: -
o Objects with net charge of same type will repel, different charges will attract
CORRECT ANSWER
charge
Question 8
composed of protons, neutrons, and electrons
Has equal number of protons and electrons=> have same amount of both types of charge,
which = neutral (equal charge)
CORRECT ANSWER
atom
3
, Question 9
If a material gains _____, material will have - net charge, if loses ______ it will have + net
charge
· mobile charge carriers, move easily through conductors but not insulators
CORRECT ANSWER
electrons
Question 10
differences in charge quantities that cause attracting and repelling forces
is a fixed amt: o must be transferred from one object to another; if one object gains charge it
is because another object lost an = amt of charge; the overall amt of charge was not
changed
CORRECT ANSWER
net charge
Question 11
Ex) A particular object has a net 6.5 μC of the positive type of charge. Were electrons
transferred onto or off the object? How many?
CORRECT ANSWER
Answer: Since the object has extra of the positive type of charge, electrons must have been
transferred off the material. Since electrons carry the negative type of charge, removing
electrons would have left behind more positive than negative.
The total amount of charge moved off the material was 6.5 μC. Each electron moved off
carries 1.6x10^-19 C. Convert μC into C and divide.
6.5x10^-6 C / 1.6x10^-19 C = 4.06x10^13 electrons were removed.
4
QUESTIONS AND VERIFIED ANSWERS|BRAND NEW
2026-2027 UPDATE|GRADED A+
Question 1
A vector measurement is best described as:
a. A measurement that has magnitude
b. A measurement that has direction
c. Both A and B
CORRECT ANSWER
c. Both A and B
Question 2
The sum of vectors A and B where A = <3,2> and B = <-1,4> is:
a. <2,6>
b. <4,6>
c. <7,1>
CORRECT ANSWER
a. <2,6>
Question 3
The x component of a force that is 20 N at 30˚is:
a. 17.3 N
b. 20 N
c. 10 N
1
,CORRECT ANSWER
a. 17.3 N
Question 4
The magnitude of a force that has an x component of 10 N and a y component of 20 N is:
a. 30 N
b. 500 N
c. 22 N
CORRECT ANSWER
c. 22 N
Question 5
A force is best described as:
a. The ability to do work
b. A push or pull
c. The rate at which energy is transferred
CORRECT ANSWER
b. A push or pull
Question 6
A scalar measurement is one that has:
a. Magnitude
b. Direction
c. Both A and B
2
,CORRECT ANSWER
a. Magnitude
Question 7
property of matter that causes electrical effects
o Symbol: q
o Units: Coulomb or C
o Conserved value
fundamental property of matter responsible for electrical effects; all atomic matter contains
____
o + or -
o Protons: +
o Electrons: -
o Objects with net charge of same type will repel, different charges will attract
CORRECT ANSWER
charge
Question 8
composed of protons, neutrons, and electrons
Has equal number of protons and electrons=> have same amount of both types of charge,
which = neutral (equal charge)
CORRECT ANSWER
atom
3
, Question 9
If a material gains _____, material will have - net charge, if loses ______ it will have + net
charge
· mobile charge carriers, move easily through conductors but not insulators
CORRECT ANSWER
electrons
Question 10
differences in charge quantities that cause attracting and repelling forces
is a fixed amt: o must be transferred from one object to another; if one object gains charge it
is because another object lost an = amt of charge; the overall amt of charge was not
changed
CORRECT ANSWER
net charge
Question 11
Ex) A particular object has a net 6.5 μC of the positive type of charge. Were electrons
transferred onto or off the object? How many?
CORRECT ANSWER
Answer: Since the object has extra of the positive type of charge, electrons must have been
transferred off the material. Since electrons carry the negative type of charge, removing
electrons would have left behind more positive than negative.
The total amount of charge moved off the material was 6.5 μC. Each electron moved off
carries 1.6x10^-19 C. Convert μC into C and divide.
6.5x10^-6 C / 1.6x10^-19 C = 4.06x10^13 electrons were removed.
4
