Tuesday, December 29, 2015
Sunday, December 20, 2015
What is the potential difference V?
3. A helium nucleus is accelerated from rest through a potential difference V to a kinetic energy of X ∙ 10⁻¹³ J.
What is the potential difference V?
X is some number.
Answer:
V = E/q = E/(2e) = X ∙ 10⁻¹³ J / (2∙1.60×10⁻¹⁹ C) = 0.312X MV
What is the potential difference V?
X is some number.
Answer:
V = E/q = E/(2e) = X ∙ 10⁻¹³ J / (2∙1.60×10⁻¹⁹ C) = 0.312X MV
Saturday, December 19, 2015
What is the electric flux through an area?
2. A thin spherical shell of radius x₁ cm has x₂ µC of charge uniformly distributed over its surface. What is the electric flux through an area of x₃ m² of a spherical surface concentric with the shell of charge but having a radius of x₄ m?
x₁, x₂, x₃, and x₄ are some numbers.
Answer: 8.99∙10⁴∙ x₂ ∙ x₃ / x₄² N∙m²/C
x₁, x₂, x₃, and x₄ are some numbers.
Answer: 8.99∙10⁴∙ x₂ ∙ x₃ / x₄² N∙m²/C
Saturday, December 5, 2015
SI Prefixes
SI Prefixes
Prefix, Prefixes, SI, SI Prefix, SI Prefixes, yotta, zetta, exa, peta, tera, giga, mega, kilo, hecto, deca, deci, centi, milli, micro, nano, pico, femto, atto, zepto, yocto
Prefix, Prefixes, SI, SI Prefix, SI Prefixes, yotta, zetta, exa, peta, tera, giga, mega, kilo, hecto, deca, deci, centi, milli, micro, nano, pico, femto, atto, zepto, yocto
Sunday, November 29, 2015
Thursday, November 26, 2015
Exam Review: Open-Book and Multiple-Choice
Open book exam.
You have the permission to use your textbooks and any your notes.
Moreover, sometimes you have to use your textbooks to take some table-data.
So, bring with you into the midterm exam your textbooks, worksheets and chapter summaries, calculators and your lucky pencils to fill Scantron cards.
Examples:
1. How much heat is required to rise the temperature of 10 g of aluminum from 20°C to 30°C?
(Hint: Use the table 10.1 in the page 196 to take the specific heat capacity of aluminum, c=0.215 cal/(g °C). )
2. Mercury in a flask has the volume of 10 cm³. What is the mass of this amount of mercury?
(Hint: Use table 9.1 in the page 174 to take the Mercury density, 13.6 g/cm³. )
3. A large rock is dropped from the top of a high cliff (with an initial velocity of zero). How far does it fall in the first 2 second of its flight?
Hint: Use the figure 3.7 in the page 43.
(Hint: Try to predict solutions without calculations. )
4. A driver drives for 2 hours at an average speed of 50 km/h and 1 hour at an average speed of 80 km/h. What is the average speed of the driver for total 3 hour trip?
a) 30 km/h, b) 40 km/h, c) 90 km/h, d) 130 km/h, e) No solution.
5. A driver drives for 2 hours at an average speed of 50 km/h and 1 hour at an average speed of 80 km/h. What is the average speed of the driver for total 3 hour trip?
a) 30 km/h, b) 60 km/h, c) 65 km/h, d) 60 m/s, e) 60.
(Hint: Check units of measurement. )
6. A driver drives for 2 hours at an average speed of 50 km/h and 1 hour at an average speed of 80 km/h. What is the average speed of the driver for total 3 hour trip?
a) 17 m/s, b) 40 m/s, c) 60 m/s, d) 130 km/h, e) No solution.
(Hint: Check units of measurement. )
7. A driver drives for 2 hours at an average speed of 50 km/h and 1 hour at an average speed of 80 km/h. What is the average speed of the driver for total 3 hour trip?
a) 30 m/s, b) 40 m/s, c) 60 m/s, d) 130 km/h, e) No solution.
(Hint: Check units of measurement. )
8. A ball is thrown upward with an initial velocity of 15 m/s. What is the magnitude of the ball’s velocity 1 second after it is thrown? Use the approximate value of g = 10 m/s².
a) 5 m/s², b) 5, c) 5 magnitudes, d) 25 m/s, e) no solution.
(Hint: Check units of measurement. )
9. Two identical objects have different speeds. The kinetic energy of the first object is 10 J. Speed of the second object is 3 times greater than the speed of the first object. What is kinetic energy of the second object?
(Hint: Do analysis of quantitative relationships between physics parameters in physics formulas: directly proportional, inversely proportional, proportional to the square, inversely proportional to the square. Don't limit your work with the formulas only by substitutions of symbols by numbers and doing calculations. )
You have the permission to use your textbooks and any your notes.
Moreover, sometimes you have to use your textbooks to take some table-data.
So, bring with you into the midterm exam your textbooks, worksheets and chapter summaries, calculators and your lucky pencils to fill Scantron cards.
Examples:
1. How much heat is required to rise the temperature of 10 g of aluminum from 20°C to 30°C?
(Hint: Use the table 10.1 in the page 196 to take the specific heat capacity of aluminum, c=0.215 cal/(g °C). )
2. Mercury in a flask has the volume of 10 cm³. What is the mass of this amount of mercury?
(Hint: Use table 9.1 in the page 174 to take the Mercury density, 13.6 g/cm³. )
3. A large rock is dropped from the top of a high cliff (with an initial velocity of zero). How far does it fall in the first 2 second of its flight?
Hint: Use the figure 3.7 in the page 43.
(Hint: Try to predict solutions without calculations. )
4. A driver drives for 2 hours at an average speed of 50 km/h and 1 hour at an average speed of 80 km/h. What is the average speed of the driver for total 3 hour trip?
a) 30 km/h, b) 40 km/h, c) 90 km/h, d) 130 km/h, e) No solution.
5. A driver drives for 2 hours at an average speed of 50 km/h and 1 hour at an average speed of 80 km/h. What is the average speed of the driver for total 3 hour trip?
a) 30 km/h, b) 60 km/h, c) 65 km/h, d) 60 m/s, e) 60.
(Hint: Check units of measurement. )
6. A driver drives for 2 hours at an average speed of 50 km/h and 1 hour at an average speed of 80 km/h. What is the average speed of the driver for total 3 hour trip?
a) 17 m/s, b) 40 m/s, c) 60 m/s, d) 130 km/h, e) No solution.
(Hint: Check units of measurement. )
7. A driver drives for 2 hours at an average speed of 50 km/h and 1 hour at an average speed of 80 km/h. What is the average speed of the driver for total 3 hour trip?
a) 30 m/s, b) 40 m/s, c) 60 m/s, d) 130 km/h, e) No solution.
(Hint: Check units of measurement. )
8. A ball is thrown upward with an initial velocity of 15 m/s. What is the magnitude of the ball’s velocity 1 second after it is thrown? Use the approximate value of g = 10 m/s².
a) 5 m/s², b) 5, c) 5 magnitudes, d) 25 m/s, e) no solution.
(Hint: Check units of measurement. )
9. Two identical objects have different speeds. The kinetic energy of the first object is 10 J. Speed of the second object is 3 times greater than the speed of the first object. What is kinetic energy of the second object?
(Hint: Do analysis of quantitative relationships between physics parameters in physics formulas: directly proportional, inversely proportional, proportional to the square, inversely proportional to the square. Don't limit your work with the formulas only by substitutions of symbols by numbers and doing calculations. )
Monday, November 9, 2015
Chapter 9. Some Problems from Homework
1) An iceberg is floating in the ocean with 10% of its volume extending above the ocean's surface. What can you say about the iceberg?
a) Its weight is less than the water it displaces.
b) It displaces only 90% of its weight in water.
c) As it melts, a smaller fraction of its volume will extend above the surface.
d) Its density is close to but smaller than the density of water.
2) An ant and an elephant are walking through the jungle. On which does the greater buoyant force act?
a) The ant.
b) The elephant.
c) The same buoyant force acts on both.
d) Neither is floating, so no buoyant force is acting at all.
3) A boat floating in a large pool is loaded with solid iron bars. The water level at the pool's edge is marked with a red line. The iron is now thrown overboard. When the water becomes calm again,
a) the red line is slightly lower than the water level.
b) the red line is slightly higher than the water level.
c) the red line is still at the water level.
4) A clown at the circus blows up a balloon with helium. This balloon will not float to the ceiling unless
a) the pressure of the helium inside the balloon is greater than the atmospheric pressure.
b) the weight of the balloon is less than the weight of the air displaced by the balloon.
c) the balloon and the helium it contains weigh less than the air displaced by the balloon.
d) the pressure of the helium inside the balloon is less than the atmospheric pressure.
5) Suppose a little bubble of air has gotten into the top of a mercury barometer. If a person uses a barometer in the usual way, the reading of atmospheric pressure will be
a) correct.
b) higher than the actual value.
c) lower than the actual value.
6) A uniform wooden plank floats in a swimming pool. The plank weighs 100 pounds, and exactly 10% of its volume is above the waterline. The maximum weight of iron which could be suspended from underneath the plank without causing the whole combination to sink to the bottom of the pool is
a) exactly 10 pounds.
b) somewhat more than 10 pounds.
c) somewhat less than 10 pounds.
d) more information is needed.
7) A block that has a density of 900 kg/m3 is placed in water (density 1000 kg/m3). The block will
a) sink to the bottom.
b) sink until it is almost, but not entirely, submerged.
c) sink until it is entirely submerged and then remain in place just below the surface.
d) sink just a little bit with most of the block above the water.
e) rest on the water with none of the block submerged.
a) Its weight is less than the water it displaces.
b) It displaces only 90% of its weight in water.
c) As it melts, a smaller fraction of its volume will extend above the surface.
d) Its density is close to but smaller than the density of water.
2) An ant and an elephant are walking through the jungle. On which does the greater buoyant force act?
a) The ant.
b) The elephant.
c) The same buoyant force acts on both.
d) Neither is floating, so no buoyant force is acting at all.
3) A boat floating in a large pool is loaded with solid iron bars. The water level at the pool's edge is marked with a red line. The iron is now thrown overboard. When the water becomes calm again,
a) the red line is slightly lower than the water level.
b) the red line is slightly higher than the water level.
c) the red line is still at the water level.
4) A clown at the circus blows up a balloon with helium. This balloon will not float to the ceiling unless
a) the pressure of the helium inside the balloon is greater than the atmospheric pressure.
b) the weight of the balloon is less than the weight of the air displaced by the balloon.
c) the balloon and the helium it contains weigh less than the air displaced by the balloon.
d) the pressure of the helium inside the balloon is less than the atmospheric pressure.
5) Suppose a little bubble of air has gotten into the top of a mercury barometer. If a person uses a barometer in the usual way, the reading of atmospheric pressure will be
a) correct.
b) higher than the actual value.
c) lower than the actual value.
6) A uniform wooden plank floats in a swimming pool. The plank weighs 100 pounds, and exactly 10% of its volume is above the waterline. The maximum weight of iron which could be suspended from underneath the plank without causing the whole combination to sink to the bottom of the pool is
a) exactly 10 pounds.
b) somewhat more than 10 pounds.
c) somewhat less than 10 pounds.
d) more information is needed.
7) A block that has a density of 900 kg/m3 is placed in water (density 1000 kg/m3). The block will
a) sink to the bottom.
b) sink until it is almost, but not entirely, submerged.
c) sink until it is entirely submerged and then remain in place just below the surface.
d) sink just a little bit with most of the block above the water.
e) rest on the water with none of the block submerged.
Monday, October 26, 2015
Friday, September 18, 2015
Chapter 3. Homework
Chapter 3 online homework is open: https://www.eztestonline.com/695230/14150574120349000.tp4
Wednesday, September 9, 2015
Homeworks and home quizzes
System "EZ Test Online" is open for students to do home works and home quizzes.
Course URL: https://www.eztestonline.com/695230/index1.tpx
Students have to register.
Friday, September 4, 2015
Monday, August 24, 2015
GENERAL PHYSICS
BOROUGH OF MANHATTAN COMMUNITY COLLEGE
City University of New York
DEPARTMENT OF SCIENCE
College Attendance Policy
Academic Adjustments for Students with
Disabilities
3. Laboratory experiments will require the students to work in groups and carry out collaborative laboratory investigations.
4. Gather, analyze, and interpret data and present it in an effective written laboratory or fieldwork report.
City University of New York
DEPARTMENT OF SCIENCE
Title of Course GENERAL PHYSICS
|
Class hours 3, Lab hours 2, Credits 4 |
| PHY 110 Section _93L/B, 204L/B__, Fall 2015 |
Instructor Information
Name: Vasiliy Znamenskiy
Office:
Email: vznamenskiy@bmcc.cuny.edu
Course
Description
Prerequisites/Co-requisites:
MAT 041 or
MAT 051, ENG 088, ACR 094, ESL 062
Required
Text & Readings
Physics
of Everyday Phenomena, A Conceptual Introduction to Physics; 8th
Edition;
Author:
Thomas W. Griffith
McGraw-Hill,
ISBN-10:
978-1-308-17220-6
ISBN-13:
978-1-308-17220-0
Other
Resources
Calculator
Ruler
(metric) for Lab
Evaluation
& Requirements of Students
Homework/Quizzes 25%
Final
Examination 25%
Total 100%
Outline of Topics
Week
|
LECTURE
|
CHAPTER
|
LAB
EXPERIMENT
|
1
|
Introduction: to Physics
Describing
Motion
|
1,2
|
Measurements and Unit Conversions
|
2
|
Falling Objects and Projectile Motion
|
2, 3
|
Reading and Drawing Simple Graphs
|
3
|
Newton’s Laws
|
4
|
Acceleration Due to Gravity:
Free Fall Apparatus
|
4
|
Circular Motion; Law of Universal Gravitation
|
5
|
Newton’s
2nd Law – Atwood’s Machine
|
5
|
Energy and Oscillations
Single Harmonic Motion
|
6
|
Simple Harmonic Motion: The Vibrating Spring
|
6
|
Momentum and Impulse; Torque
|
7, 8.2
|
Rotational Equilibrium
|
7
|
Fluids
|
9
|
Archimedes Principle
|
8
|
Temperature and Heat
|
10
|
Specific Heat of a Solid
|
9
|
Electrostatics; Simple Circuits
|
12,13
|
Ohm’s Law
|
10
|
Circuits; Magnetism; Electromagnetism
|
13, 14
|
Series
and Parallel Connections of Resistors
|
11
|
Wave Motion and Sound; EM Spectrum
|
15,16
|
Air
Column Resonance: Velocity of Sound
|
12
|
Light Waves and Color; Optics
|
16,17
|
Light Reflection and Refraction
|
13
|
Atomic Structure; Radioactivity
|
18
|
Focal
Length of Converging Lens:
Simple
Telescope
|
14
|
Nuclear Energy
|
18,19
|
Spectra
|
15
|
Review
|
||
College Attendance Policy
At
BMCC, the maximum number of absences is limited to one more hour than the
number of hours a class meets in one week.
For example, you may be enrolled in a three-hour class. In that class, you would be allowed 4 hours
of absence (not 4 days). In the case of
excessive absences, the instructor has the option to lower the grade or assign
an F or WU grade.
Academic Adjustments for Students with
Disabilities
Students with disabilities who require reasonable
accommodations or academic adjustments for this course must contact the Office
of Services for Students with Disabilities.
BMCC is committed to providing equal access to all programs and
curricula to all students.
BMCC Policy on Plagiarism and Academic Integrity
Statement
Plagiarism
is the presentation of someone else’s ideas, words or artistic, scientific, or
technical work as one’s own creation.
Using the idea or work of another is permissible only when the original
author is identified. Paraphrasing and
summarizing, as well as direct quotations, require citations to the original
source. Plagiarism may be intentional or
unintentional. Lack of dishonest intent
does not necessarily absolve a student of responsibility for plagiarism.
Students who are unsure how and when to provide
documentation are advised to consult with their instructors. The library has guides designed to help
students to appropriately identify a cited work. The full policy can be found on BMCC’s web
side, www.bmcc.cuny.edu.
For further information on integrity and behavior, please consult the college
bulletin (also available online).
Course Student Learning Outcomes
(Students will be able to…)
|
Measurements (means of assessment for student learning outcomes
listed in first column)
|
1. Identify and apply the
fundamental concepts and methods of the physical science.
|
1. Graded problems involving calculations based on a lab exercise: exam
questions.
|
| 2. Apply the scientific method to
explore natural phenomena, including hypothesis development, observation,
experimentation, measurement, data analysis, and data presentation. |
2. Laboratory experiments will require the statement of a hypothesis, gathering
of experimental data followed by analysis and presentation of this data.
3. Use the tools of a scientific
discipline to carry out collaborative laboratory investigations.3. Laboratory experiments will require the students to work in groups and carry out collaborative laboratory investigations.
4. Gather, analyze, and interpret data and present it in an effective written laboratory or fieldwork report.
4. Graded lab reports, where
students will report, analyze and present scientific data.
5. Identify and apply research
ethics and unbiased assessment in gathering and reporting scientific data.
5. Graded lab exercise with emphasis on the
truthful collection, recording and reporting of data independent of previous
expectations.
General
Education Learning Outcomes
|
Measurements
(means of assessment for general education goals listed in first column)
|
|
Communication
Skills- Students
will be able to write, read, listen and speak critically and effectively.
|
||
Quantitative
Reasoning- Students
will be able to use quantitative skills and the concepts and methods of
mathematics to solve problems.
|
||
þ
|
Scientific
Reasoning- Students
will be able to apply the concepts and methods of the natural sciences.
|
1. Graded problems involving
calculations: exam questions
2. Lab writeups, exam questions
3. Graded lab exercise involving the collection, tabulating and
plotting of physical data
|
Social and
Behavioral Sciences- Students will be able to apply the concepts and methods of the social
sciences.
|
||
Arts &
Humanities-
Students will be able to develop knowledge and understanding of the arts and
literature through critiques of works of art, music, theatre or literature.
|
||
Information &
Technology Literacy- Students will be able to collect, evaluate and interpret information
and effectively use information technologies.
|
||
Values- Students will be able to
make informed choices based on an understanding of personal values, human
diversity, multicultural awareness and social responsibility.
|
Sunday, August 23, 2015
Friday, August 21, 2015
General Physics PHY 110
Borough of Manhattan Community College, 2015 Fall
General Physics, PHY 110 Instructor: Vasiliy Znamenskiy
General Physics, PHY 110 Instructor: Vasiliy Znamenskiy
Friday, July 3, 2015
Cool Jobs, Dreaming Rats, and the Explosive Science of Fireworks
|
|
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