Dr. Mohamed Alqahtani Course Name: (Applied Physics) Symbol and number: 2305 Phys Languish of course : English Text book: (Physics for Scientists and Engineers) Author: Raymond A. Serway, College Publishing ISBN 0-03-015654-8 Dr. Mohamed Alqahtani Email: mbalqahtani@ksu.edu.sa

Basic physical concepts Current and Resistance: COURSE SYLLABUS: Chapter Content Weeks 1 Basic physical concepts ( Units – Physical quantizes , Vectors , Vectors addition, Vector multiplication ) 2 Electric Field Coulomb’s Law, The Electric Field, Electric Field Lines. 3 Current and Resistance: Electric Current, Resistance, Resistance and Temperature, Electric Power.

Direct Current Circuits: 4 Capacitance Definition of Capacitance, Calculating Capacitance, Combinations of Capacitors and Energy Stored in a Charged Capacitor, 2 5 Direct Current Circuits:  Electromotive Force, Resistors in Series and Parallel, Kirchoff’s Rules, RC Circuits 6 Inductance: Self Inductance, RL Circuits, Energy in a Magnetic field, Mutual Inductance.

Alternating Current Circuits: 7 Alternating Current Circuits:  AC Sources, Resistors in an AC circuit, Inductors in an AC Circuit, Capacitors in an AC Circuit, The RLC Series Circuit, Power in an AC Circuit, Resonance in a Series RLC Circuit. 2 8 Gates NOT- AND- OR- XORNAND- NOR- NXOR 1

Attendance and activity Evaluation Exam Marks Date Notes 1st Midterm 10 2nd Midterm Lab Experiments & Exam 30 Attendance and activity Final 40 TOTAL 100

Chapter 1 Basic physical concepts Units and dimensional analysis. Physical quantizes , Vectors , Vectors addition, Vector multiplication )

Physical Quantities 1.Units and Dimensional Analysis Any quantity that we can measure by measuring tool and express as number is called Physical Quantities We use many quantities in everyday life as: Length – Mass – Time – temperature – Current- Voltage – Power- velocity – etc

I- basic or fundamentals quantities 2. Physical quantities are divided into: I- basic or fundamentals quantities They can not be expressed in terms of other quantities Quantities Symbol Unit Length L m (meter) Mass M kg (kilogram) Time T s (second) Current I A (Ampere) Absolute Temperature AT K (degree Kelvin) Amount of substance AS Mol (mole) Luminous intensity LI cd (candela)

II- Derived Quantities Are quantities which expressed in terms of the fundamental quantities as: Velocity (v) = length / Time = L / T = m / s. 2. Acceleration (a)= Velocity / Time = (L/T)/ T = L/T2 = m / s2 3. Density (D) = mass/volume = M / V = kg /m3

4. Force F = mass x acceleration = M (L/T2) = kg.m/s2 = Newton III- Dimensionless Quantities ( with no units) as: 1- refractive index (n) 2- constant Pi () 3- Atomic weight (M)

Physical Quantities also classified into : Scalar Quantity: defined by number only like mass- length- time- density Vector Quantity: defined by number and direction like magnetic force, weight To measure any quantities there are two requirements: 1- we must have a measuring instrument (direct or indirect) 2- we must have a system unit of measurements

There two types of units 1-Gauss Unit (cgs) Length (cm)- mass (gram) - Time (s) 2- System International (SI) Length (m)- mass (kg) - Time (s) In physics, we deal with quantities which are very small to very large from 10-18 to 1028

Largest smallest Factor Name Symbol 1024 Yatta Y 10-1 deci d 1021 Zetta Z 10-2 centi c 1018 Exa E 10-3 milli m 1015 Peta P 10-6 micro  1012 Tera T 10-9 nano n 109 Giga G 10-12 pico p 106 Mega M 10-15 femto f 103 kilo k 10-18 atto a 102 hecto h 10-21 zepto z 101 deka da 10-24 yacto y

3. Vectors Vector symbol Properties of Vectors A vectors has magnitude as well as direction Vector symbol Properties of Vectors Components of Vector A 2. Magnitude and direction of vector A Example1 Find the two components of vector A Ax = A cos = 10 cos 60 = 5 Ay = A sin  = 10 sin 60 = 8.66 A A 10 60

Vectors in three directions Vector components   Vector magnitude Example 2 Vector A= 4i+2j-4k, find the magnitude IAI? Sol: Ax=4, Ay= 2, Az=-4 and the magnitude

4. Adding Vectors vector added to vector equal vector By drawing If and = (Ax+Bx)i + (Ay+By)j + (Az+Bz)k Example: vector A= 3i+5j+2k and vector B= -i+2j-k = (+3-1)i +(+5+2)j + (+2-1) K = 2i + 7j+k

5. Vector product Scalar product A•B=IAIIBI Cos changes from 0o to 90o If A and B are parallel i.e  = 0 , Cos 0=1  A•B=IAIIBI 1 If A and B are perpendicular i.e  =90 , Cos 0=0 A•B=0 2 Vector product AxB=IAIIBI sin changes from 0o to 90o If A and B are parallel i.e  =0 , sin 0=0 AxB = 0 1 If A and B are perpendicular i.e  =90 , sin90=1  AxB=IAIIBI 2