Portage learning phys 165 modules exams 1-9 and final exam
questions and answers complete questions and verified answers
already graded a+!!
Table of Contents
Portage learning phys 165 modules exams 1-9 and final exam
questions and answers complete questions and verified answers
already graded a+!! .............................................................................................................. 1
Phys 165 Module 1...................................................................................................................... 2
Phys 165 module 2 ...................................................................................................................... 5
Phys 165 module 3 .................................................................................................................... 15
Phys 165 Module 4.................................................................................................................... 31
Phys 165 module 5 .................................................................................................................... 37
Phys 165 module 6 .................................................................................................................... 44
Phys 165 module 7 .................................................................................................................... 48
Phys 165 module 8 .................................................................................................................... 54
Phys 165 module 9 .................................................................................................................... 62
,Phys 165 Module 1
A ball is tossed vertically upward with a speed of 10.0 m/s. At the peak of its path, the ball has
________.
A) zero speed
B) maximum gravitational attraction
C) maximum acceleration
D) no force acting on it
Correct answer: a
Which statement best describes the scientific method?
Correct answer: a systematic process used to find a solution to a problem.
_________ can be thought of collectively as objects in nature.
Correct answer: matter
A physical quantity that remains constant during an experiment is known as an______.
Correct answer: control
When a decrease in the independent variable causes the dependent variable to increase this is
called an _________.
Correct answer: inverse proportion
Which of the following best describes a scientific law?
Correct answer: a generalized rule used to explain observations of the natural world, this
focuses on smaller details.
,Which of the following is a measurement of force?
Correct answer: the kilogram
Which of the following is a measurement of temperature?
Correct answer: the kelvin.
Which of the following refers to the closeness of a measurement to the correct value of that
measurement?
Accurate
How many significant figures are in 4,020 kg?
3
How many significant figures are in 0.004301 m?
4
Correct answer: 4
Classical physics is an excellent approximation as long as three things are true. Which of the
following statements are not one of these three things?
Friction acting on the object must be so small that it can be ignored
Besides factors that are unique to the situation, the factors contributing to uncertainty in a
measurement include:
Limitations of the measuring device. And the skill of the person making the measurement.
The mass of a block of wood is reported as 458 ± 21 g. What is the percent uncertainty? Show
your work (2 points for correct setup, 2 points for correct calculation, 1 point for correct number
of significant figures)
21/458x100=4.5852=4.6%
The time for a drag race is 14.5 s ± 8.1%. What is the absolute uncertainty? Show your work (2
points for correct setup, 2 points for correct calculation, 1 point for correct number of
significant figures and label)
, Correct answer: 14.5 s x 8.1% = 1.1745 → 1.2 s
Covert 50 km to meters.
Correct answer: 50 km * 1000 m/1 km= 50000 m
Covert 53 mg to grams.
Correct answer: 53 mg * 1 g/1000mg= 53/1000= 0.053 g
A person runs a race in 6709 s. How many minutes is this time?
Correct answer: 6706 s* 1 minute/60 sec= 6706/60=111.767 minutes= 111.8 minutes
What do you get when you divide 932.0 m by 42.00 s?
Correct answer: 932.0 m/42.00 s= 22.1905 m/s= 22.19 m/s.
In an experiment, the factors that affect the time it takes a ball to fall are being tested. During
one set of trials, the height from which the ball is dropped is systematically increased, and the
resulting time it takes the ball to fall is measured. The entire time the same ball is used. Identify
the independent variable, the dependent variable, and the controlled variable.
Independent- height of ball dependent- time of fall of ball control- mass of ball
In a meaningful paragraph or two, describe the role of experimentation in science. Be sure to
describe how experimental data can affect our knowledge of the universe and how the
reliability of information is affected by the presence or lack of experimental data. 4 points for
describing the role of experimentation in science, 4 points for discussing reliability of
information and 2 points for grammar - total 10 points
Correct answer: experimentation is extremely important to the field of science and follwing the
scienttific method. When something wants within the world of science wants to be explained,
scientist can produce experiments in an effort to gather data, draw conclusions and publish laws
and theories. The set up and design of these experiments are extremely important as they must
be set up in a way that mimics real world applications and reproducable conditions. Without
these aspects, the data drawn may not be correct of fit what is actually trying to be studied. If
questions and answers complete questions and verified answers
already graded a+!!
Table of Contents
Portage learning phys 165 modules exams 1-9 and final exam
questions and answers complete questions and verified answers
already graded a+!! .............................................................................................................. 1
Phys 165 Module 1...................................................................................................................... 2
Phys 165 module 2 ...................................................................................................................... 5
Phys 165 module 3 .................................................................................................................... 15
Phys 165 Module 4.................................................................................................................... 31
Phys 165 module 5 .................................................................................................................... 37
Phys 165 module 6 .................................................................................................................... 44
Phys 165 module 7 .................................................................................................................... 48
Phys 165 module 8 .................................................................................................................... 54
Phys 165 module 9 .................................................................................................................... 62
,Phys 165 Module 1
A ball is tossed vertically upward with a speed of 10.0 m/s. At the peak of its path, the ball has
________.
A) zero speed
B) maximum gravitational attraction
C) maximum acceleration
D) no force acting on it
Correct answer: a
Which statement best describes the scientific method?
Correct answer: a systematic process used to find a solution to a problem.
_________ can be thought of collectively as objects in nature.
Correct answer: matter
A physical quantity that remains constant during an experiment is known as an______.
Correct answer: control
When a decrease in the independent variable causes the dependent variable to increase this is
called an _________.
Correct answer: inverse proportion
Which of the following best describes a scientific law?
Correct answer: a generalized rule used to explain observations of the natural world, this
focuses on smaller details.
,Which of the following is a measurement of force?
Correct answer: the kilogram
Which of the following is a measurement of temperature?
Correct answer: the kelvin.
Which of the following refers to the closeness of a measurement to the correct value of that
measurement?
Accurate
How many significant figures are in 4,020 kg?
3
How many significant figures are in 0.004301 m?
4
Correct answer: 4
Classical physics is an excellent approximation as long as three things are true. Which of the
following statements are not one of these three things?
Friction acting on the object must be so small that it can be ignored
Besides factors that are unique to the situation, the factors contributing to uncertainty in a
measurement include:
Limitations of the measuring device. And the skill of the person making the measurement.
The mass of a block of wood is reported as 458 ± 21 g. What is the percent uncertainty? Show
your work (2 points for correct setup, 2 points for correct calculation, 1 point for correct number
of significant figures)
21/458x100=4.5852=4.6%
The time for a drag race is 14.5 s ± 8.1%. What is the absolute uncertainty? Show your work (2
points for correct setup, 2 points for correct calculation, 1 point for correct number of
significant figures and label)
, Correct answer: 14.5 s x 8.1% = 1.1745 → 1.2 s
Covert 50 km to meters.
Correct answer: 50 km * 1000 m/1 km= 50000 m
Covert 53 mg to grams.
Correct answer: 53 mg * 1 g/1000mg= 53/1000= 0.053 g
A person runs a race in 6709 s. How many minutes is this time?
Correct answer: 6706 s* 1 minute/60 sec= 6706/60=111.767 minutes= 111.8 minutes
What do you get when you divide 932.0 m by 42.00 s?
Correct answer: 932.0 m/42.00 s= 22.1905 m/s= 22.19 m/s.
In an experiment, the factors that affect the time it takes a ball to fall are being tested. During
one set of trials, the height from which the ball is dropped is systematically increased, and the
resulting time it takes the ball to fall is measured. The entire time the same ball is used. Identify
the independent variable, the dependent variable, and the controlled variable.
Independent- height of ball dependent- time of fall of ball control- mass of ball
In a meaningful paragraph or two, describe the role of experimentation in science. Be sure to
describe how experimental data can affect our knowledge of the universe and how the
reliability of information is affected by the presence or lack of experimental data. 4 points for
describing the role of experimentation in science, 4 points for discussing reliability of
information and 2 points for grammar - total 10 points
Correct answer: experimentation is extremely important to the field of science and follwing the
scienttific method. When something wants within the world of science wants to be explained,
scientist can produce experiments in an effort to gather data, draw conclusions and publish laws
and theories. The set up and design of these experiments are extremely important as they must
be set up in a way that mimics real world applications and reproducable conditions. Without
these aspects, the data drawn may not be correct of fit what is actually trying to be studied. If
