Physics Study and Assessment Quiz

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Questions and Answers

What is the total percentage of marks allocated to the final exam in the grading structure?

50% (correct)

25%

15%

10%

Which laboratory assessment contributes the least to the total lab marks?

Attendance in lab

Final practical exam (correct)

Pre-lab preparation

Weekly evaluations

What is the first step recommended for studying effectively?

Make a team work with colleagues.

Translate only unknown terms. (correct)

Translate the entire presentation.

Use AI-tools for understanding concepts.

How many types of quizzes may occur during the semester?

Two types: Written and Online. Signup and view all the answers

What represents a basic quantity in physics?

Quantities that cannot be expressed in terms of other quantities. Signup and view all the answers

How many experiments are included in the practical section?

7 Experiments Signup and view all the answers

What percentage of course points must be exceeded to pass the course?

60% Signup and view all the answers

Which of the following is NOT a recommended way to study?

Translating the entire presentation word for word. Signup and view all the answers

Which of the following is NOT one of the basic quantities?

Energy Signup and view all the answers

What is the fundamental unit of mass in the C.G.S. system?

Gram Signup and view all the answers

In the M.K.S. system, what is the fundamental unit for length?

Meter Signup and view all the answers

Which measurement system is widely accepted internationally?

SI Units Signup and view all the answers

Which of the following is a supplementary unit in the SI system?

Radian Signup and view all the answers

What is the standard of length based on in the SI system?

Speed of light in vacuum Signup and view all the answers

Which quantity is not considered a mechanical quantity?

Temperature Signup and view all the answers

Which of the following units is used for measuring electric current in the SI system?

Ampere Signup and view all the answers

What is the correct representation of the velocity's dimension?

L/T Signup and view all the answers

Which of the following represents the dimensional formula for kinetic energy?

ML²T-2 Signup and view all the answers

What defines one second in the SI System?

Frequency of Cs133 atom radiation Signup and view all the answers

What is the mass unit defined by the mass of a specific alloy?

Kilogram Signup and view all the answers

What is the dimensional formula of force?

MLT-2 Signup and view all the answers

What does the dimensional formula [P.E] refer to?

MLT² Signup and view all the answers

Which quantity does not correspond to a basic dimension?

Temperature Signup and view all the answers

Which of the following is the correct dimensional formula for acceleration?

LT-2 Signup and view all the answers

What are the units of the gravitational constant G in SI units?

m³/(kg.s²) Signup and view all the answers

What is the correct formula for pressure?

P = F/A Signup and view all the answers

If a substance has a mass of 500 g and occupies a volume of 250 cm³, what is its density in SI units?

1.0 kg/m³ Signup and view all the answers

Which equation represents the density of a material?

ρ = m/V Signup and view all the answers

What does the prefix 'kilo' represent in terms of powers of ten?

1000 Signup and view all the answers

In the equation for gravitational force, what does r represent?

The distance between two masses Signup and view all the answers

How is the area of a rectangle measured in SI units if each side is given in inches?

Convert inches to centimeters before calculating area Signup and view all the answers

What is the formula to calculate the gravitational force between two masses?

F = G(Mm)/r² Signup and view all the answers

What is the correct value of mass when expressed in kilograms based on the given information?

0.856 kg Signup and view all the answers

How is displacement defined in relation to distance?

Displacement is independent of the path taken. Signup and view all the answers

Which of these statements accurately describes a scalar quantity?

A scalar is specified by a single value and an appropriate unit. Signup and view all the answers

What is the formula to find the x-component of a vector A?

Ax = A * cos(θ) Signup and view all the answers

If two vectors A and B are equal, what can be concluded about their magnitudes and directions?

They have the same magnitude and the same direction. Signup and view all the answers

What does the term vector components refer to?

The projections of a vector along the x- and y-axes. Signup and view all the answers

What is the density value given in the information?

5.59 × 10 kg/m³ Signup and view all the answers

What characteristic distinguishes a vector from a scalar?

A vector has a direction. Signup and view all the answers

What is the purpose of a unit vector?

To specify only the direction of a vector Signup and view all the answers

When adding two vectors A and B, what form does the resultant vector R take?

R = Ax + Bx + Ay + By Signup and view all the answers

How is the magnitude R of the resultant vector calculated?

R = √(Rx^2 + Ry^2) Signup and view all the answers

What does the angle θ associated with vector R represent?

The direction of the resultant vector R Signup and view all the answers

If vector A is represented as A = 2.00 i + 6.00 j and vector B as B = 3.00 i - 2.00 j, what would be the x-component of the resultant vector C = A + B?

5.00 Signup and view all the answers

In the vector difference D = A - B, what does the y-component of D equal when A = 2.00 i + 6.00 j and B = 3.00 i - 2.00 j?

4.00 Signup and view all the answers

What condition must the components of a vector satisfy?

They can have any real number signs Signup and view all the answers

Which expression represents the direction θ in terms of the components of R?

θ = tan(Ry/Rx) Signup and view all the answers

Study Notes

Biophysics Lecture

Course is taught by M. A. S. Hammam
Lecture timing includes 15 minutes of refreshment, 70 minutes of explanation, and 15 minutes for questions and answers

Course Assessments

Students need to score over 60% to pass
These include class work (15%), quizzes, midterm (10%), practical class work (10%), practical final (5%), oral exam with final (10%), and a final exam (50%)
Total grade = 100%

Quizzes

Quizzes are given periodically throughout the semester
Quizzes can be written or online
Written quizzes use student ID numbers
Online quizzes have links or QR codes

Practical

There are 7 experiments
Labs are held in the biotechnology building in the following labs: Bio201, Bio202, Bio203, Bio301, Bio302, and Bio303
Student weekly evaluation is based on experiment results, student attitude in lab, pre-lab preparation (10 marks out of 15 marks total)
Students must confirm their next week's experiment before leaving lab
Experiments are demonstrated on videos available on the YouTube channel "Mohamed Sabet"
Final practical exam scores are worth 5 marks out of 15 marks total

How to Study

Don't translate the entire presentation into your native language
Translate only unknown words using handwriting in the printed version
Use AI tools like ChatGPT, Gemini, Claude, Microsoft Copilot, Perplexity, and Socratic to understand concepts and expressions
Don't waste time
Help colleagues, team work is beneficial

Chapter 1: Physics and Measurements

Topics covered include basic and derived quantities, systems of units, dimensional analysis, conversion of units, vector & scalar quantities

Basic and Derived Quantities

Basic quantities (length, mass, time) need clear definitions
Other quantities are derived by combining basic quantities (force, velocity, volume)

Systems of Units

CGS system (Centimeter-Gram-Second): French system using centimeter, gram, and second for length, mass, and time
FPS system (Foot-Pound-Second): English system using foot, pound, and second for length, mass, and time
MKS system (Meter-Kilogram-Second): French system using meter, kilogram, and second for length, mass, and time (also known as the metric system)
SI Units (International System of Units): internationally accepted system using meter, kilogram, second, ampere, Kelvin, candela, and mole

SI System Standards

Length is based on the speed of light in a vacuum; one meter is the distance light travels in a vacuum in one 1/299,792,458 of a second
Mass is based on the mass of a specific platinum-iridium alloy cylinder (kilogram)
Time is based on the characteristic frequency of radiation of cesium-133 (second)

Dimensional Analysis

Dimensions represent the physical nature of a quantity (length, mass, time)
They are placed in square brackets [ ]
Dimensions of some physical quantities: area, volume, velocity, acceleration, force, momentum, kinetic energy, potential energy, pressure, density

Problem: Newton's Law of Universal Gravitation

The units of G in the SI units = m³/kg⋅s²

Conversion of Units and Prefixes

Prefixes are used to multiply or divide base units by powers of 10
Prefix examples include G (giga), M (mega), k (kilo), h (hecto), da(deca), d (deci), c(centi), m(milli), μ(micro), n(nano)
Tables of prefixes and their equivalent values

Vector and Scalar Quantities

Scalar: completely specified by a magnitude and has no direction
Vector: completely described by magnitude and direction

Vector Properties

Vector magnitude is a positive number
Direction is relative to a reference line
Vectors can be written as A or in a bold print →A

Vector Components

Components are projections along x- and y-axes
Magnitude of x- and y-components are calculated via cosine and sine of the angle from the x axis
Magnitude of vector is calculated using the magnitude of vector's components

Adding Vectors

Vectors are added algebraically using their components
The magnitude of the resultant vector (R) is calculated using the Pythagorean theorem (R²=Rx²+Ry²)
The direction of the resultant vector (θ) is calculated by using tan⁻¹(Ry/Rx)

Vector Multiplication

Multiplication of a vector by a scalar changes the vector's magnitude; negative scalar reverses the direction
Scalar (dot) product produces a scalar; vector product produces a vector
Dot product formula given components or magnitudes and included angle
Cross product formula using components
Right-hand rule for direction of cross product

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Description

Test your knowledge on the grading structure and study strategies specific to physics courses. This quiz covers essential concepts and lab assessments to enhance your understanding of the subject. Perfect for students looking to evaluate their preparedness for exams and practical applications in physics.