Biophysics Course Overview - PHYS 101
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Questions and Answers

What branch of science uses the methods of physics to study biological processes?

  • Biology
  • Biophysics (correct)
  • Astrophysics
  • Chemistry

    • Which of the following chapters in the course covers the properties of light?

  • Chapter 1: Units, Statics Equilibrium and Torque
  • Chapter 4: Electromagnetic waves and general properties of light (correct)
  • Chapter 6: Electricity
  • Chapter 5: Optics and physics of the eye

    • How are physical quantities classified in the context of biophysics?

  • Scalar and Vector
  • Base and Derived (correct)
  • Static and Dynamic
  • Discrete and Continuous

    • What is the main goal of studying biophysics in medical and bioscience applications?

    <p>To understand how basic physics is related to biomedical applications</p> Signup and view all the answers

    In the formula $v=at^2+bt^3$, if $t$ is measured in seconds, what does the variable $a$ represent?

    <p>Acceleration in m/s²</p> Signup and view all the answers

    Which chapter covers fluid dynamics in the course?

    <p>Chapter 2: Fluid Statics, and Fluid Dynamics</p> Signup and view all the answers

    What is described as like the bricks of a building in the classification of physical quantities?

    <p>Base quantities</p> Signup and view all the answers

    What is the total duration allocated for studying the chapter on electricity?

    <p>One week</p> Signup and view all the answers

    What is the unit of the spring force constant k in the SI system?

    <p>N/m</p> Signup and view all the answers

    Which prefix represents one billionth of a meter?

    <p>nano</p> Signup and view all the answers

    How is density defined mathematically?

    <p>D = m/V</p> Signup and view all the answers

    What is Avogadro's number, representing the number of atoms or molecules in one mole of a substance?

    <p>6.02 × 10²³</p> Signup and view all the answers

    If a solid cube of aluminum has a volume of 0.2 cm³ and a density of 2.7 g/cm³, how many Al atoms are contained in the cube?

    <p>1.2 × 10²²</p> Signup and view all the answers

    What is the mass of a single atom (ma) in grams if the atomic mass (A) is 27 g/mol?

    <p>4.49 × 10⁻²⁴</p> Signup and view all the answers

    What is the approximate density of the standard kilogram Platinum-Iridium cylinder?

    <p>21.461×10³ kg/m³</p> Signup and view all the answers

    What is the radius of the second sphere if its mass is five times greater than the first sphere with radius 4.50 cm?

    <p>7.69 cm</p> Signup and view all the answers

    What is the formula for calculating density?

    <p>𝜌 = m/V</p> Signup and view all the answers

    Which of the following represents the relation between Pascals and a force applied over an area?

    <p>P = F/A</p> Signup and view all the answers

    If the air density in a room is 1.21 kg/m³ and the room dimensions are 3.5m x 4.2m x 2.4m, what is the total weight of the air?

    <p>420 N</p> Signup and view all the answers

    How much force is exerted on a circular piston of radius 1.1 cm when a nurse applies a force of 42 N?

    <p>1.1 x 10^5 Pa</p> Signup and view all the answers

    What is the unit conversion from 1 N/m² to dyne/cm²?

    <p>10 dyne/cm²</p> Signup and view all the answers

    What is the downward force on the top of your head if the area is 0.040 m² under 1 atm pressure?

    <p>4.04 x 10^3 N</p> Signup and view all the answers

    In a person of height 1.83 m, how is the hydrostatic difference in blood pressure calculated?

    <p>ΔP = ρgh</p> Signup and view all the answers

    What is the weight of the water column exerted on an eardrum at a depth of 5.0 m with an area of 1 cm²?

    <p>5 N</p> Signup and view all the answers

    What is the SI unit of viscosity?

    <p>Pa.s</p> Signup and view all the answers

    According to Poiseuille's Law, what does viscosity (η) measure in a fluid?

    <p>The resistance to flow within the fluid</p> Signup and view all the answers

    Which of the following statements is true regarding erythrocyte sedimentation rate (ESR) and viscosity?

    <p>Lower viscosity occurs with higher ESR.</p> Signup and view all the answers

    What is the conversion from Fahrenheit to Celsius for a temperature of 98.6°F?

    <p>37°C</p> Signup and view all the answers

    What is the temperature in Kelvin when converting 98.6°F to Celsius first and then to Kelvin?

    <p>310.15 K</p> Signup and view all the answers

    Which of the following is NOT a heat source?

    <p>Solid objects in vacuum</p> Signup and view all the answers

    Thermal equilibrium is achieved when:

    <p>Two objects are in thermal contact with no energy exchange.</p> Signup and view all the answers

    The formula for calculating force (F) required for a constant speed (v) is:

    <p>F = ηvA/L</p> Signup and view all the answers

    What is the equation for calculating flow rate Q?

    <p>$Q = \frac{V}{t}$</p> Signup and view all the answers

    What is indicated by the term 'wettability' in fluid dynamics?

    <p>The inclination of a liquid to spread on a surface</p> Signup and view all the answers

    What happens to fluid speed as the radius of the tube decreases?

    <p>Fluid speed increases</p> Signup and view all the answers

    How is Bernoulli’s equation expressed mathematically?

    <p>p + 2 \rho v^2 + \rho g h = constant</p> Signup and view all the answers

    What is the primary feature of an ideal fluid as described in fluid dynamics?

    <p>It is non-viscous and incompressible</p> Signup and view all the answers

    Using Bernoulli's equation, what happens to kinetic energy as fluid flows through a narrower section of a pipe?

    <p>Kinetic energy increases</p> Signup and view all the answers

    In the context of fluid dynamics, what is capillary action primarily a result of?

    <p>Surface tension and adhesive forces</p> Signup and view all the answers

    What does the equation $net F_{st} = 2 \pi r \gamma \cos \theta$ represent in fluid dynamics?

    <p>Net force due to surface tension</p> Signup and view all the answers

    What characterizes forced convection?

    <p>It involves circulation by a blower or pump.</p> Signup and view all the answers

    What is a characteristic of an ideal absorber?

    <p>It absorbs all energy incidents on it.</p> Signup and view all the answers

    Which law states that the volume of a gas is directly proportional to its temperature at constant pressure?

    <p>Charles's law</p> Signup and view all the answers

    How is the ideal gas law expressed mathematically?

    <p>PV = nRT</p> Signup and view all the answers

    What happens to the length of a steel railroad track segment when the temperature increases from 0.0°C to 40.0°C?

    <p>It expands linearly.</p> Signup and view all the answers

    What is the value of the universal gas constant R in SI units?

    <p>8.315 J/mol·K</p> Signup and view all the answers

    What describes natural convection?

    <p>Differences in density due to thermal expansion drive the flow.</p> Signup and view all the answers

    What is true about an ideal gas?

    <p>Its behavior is approximated by the ideal gas law.</p> Signup and view all the answers

    Study Notes

    Biophysics for Physical Therapy

    • Biophysics is a branch of science that uses physics to study biological processes.
    • Physics uses mathematical laws to understand the natural world and can be applied to biological systems.
    • Biophysics helped to understand the structure and function of DNA.

    Course Information

    • Course Name: Biophysics Course
    • Course Code: PHYS 101
    • Hours: 3 Credits (2 hours lectures + 2 hours practical) weekly
    • Total weekly hours: 4
    • Instructor: Prof. Dr. Essam Fadl Abo Zeid, Professor of Physics of Materials Science at Physics Department, Faculty of Science, Assiut University

    Grading

    • Midterm Exam and Assignments: 26.6% (40 Marks)
    • Practical Exam and Assignments: 26.6% (40 Marks)
    • Semester works: 6.6% (10 Marks)
    • Final Paper Exam: 40% (60 Marks)
    • Total: 150 Marks

    Midterm Exam and Assignments

    • Midterm Exam: November 2024 (7th week details will be provided)
    • Assignments and Homework: Quizzes every two weeks, available for one week each, through lectures or online website.

    Practical Contents

    • 10 experiments will be demonstrated
    • Ohm's Law
    • Metric Bridge
    • Magnetic Momentum of short bar Magnet
    • Mirrors Optics
    • Mechanical Equivalent of Heat
    • Lenses Optics
    • Stokes' Experiment
    • Hook's Law
    • The Simple Pendulum
    • Velocity of Sounds
    • Final Practical exam will be on one of the above experiments

    Course Statement

    • Provide a firm understanding of the fundamental biophysics.
    • Enable the applications of basic concepts of physics in the medical and biosciences.
    • Understand how basic physics is related to biomedical applications.

    Content of the Course

    • Chapter 1: Units, Statics Equilibrium, and Torque (2 weeks)
    • Chapter 2: Fluid Statics, and Fluid Dynamics (2 weeks)
    • Chapter 3: Heat and Thermodynamics (2 weeks)
    • Chapter 4: Electromagnetic waves and general properties of light (2 weeks)
    • Chapter 5: Optics and physics of the eye (2 weeks)
    • Chapter 6: Electricity (1 week)
    • Chapter 7: Materials properties (2 weeks)

    Chapter 1: Units, Statics Equilibrium and Torque

    • Standards of length, mass, and time required for clarity in the laws of Physics
    • Defining Physical Quantities: Force, Velocity, Volume etc..
    • Base Quantities: Length (L), Mass (M), Time (T).
    • Derived Quantities: Calculated using base units.
    • International System (SI) of units: Standard measurement system for Physics quantities
    • Relationships between different system (cgs, mks, British Eng. System)

    Chapter 2: Fluid Statics, and Fluid Dynamics

    • Difference between Solids and Fluids
    • Density and Pressure Definition and Calculations
    • Variation of Pressure with Depth
    • Pascal's Principle

    Chapter 4: Electromagnetic waves and general properties of light

    • Electromagnetic waves and light
    • Properties of Electromagnetic Waves
    • Speed of EM waves
    • General Properties of Light
    • Wavelength and frequency of EM waves

    Chapter 6: Electricity

    • Electrical conductors
    • Electrical insulators
    • Semiconductors
    • Superconductors
    • Coulomb's law
    • Electric Field
    • Electrical current

    Chapter 7: Materials properties (details not presented in the slides)

    Additional Topics (general)

    • Midterm Exam and Assignments
    • Homework

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    Biophysics for Physical Therapy 2025 PDF

    Description

    Explore the fascinating intersection of physics and biology in this essential biophysics course. Learn about the applications of physical principles to understand biological processes, including DNA structure and function. This course includes lectures, practical sessions, and assessments to evaluate your understanding.

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