Course Skills and Concepts - Coursework Example

Review of Basic Skills and Concepts 1). 23cm 2 68m 3). 23cm 2 4 68m 2 5). 23m 3. (1.6). 1.68m 3. (1.7). 1000mA. (1.8). 1.0*1012pF. (1.9). 1Pf (1.10). 1.60217657*1010J (1.11). 4 r3/3. (1.12). cubic metre (m3) (1.13). 1.0*10-5 c. (1.14). X=1÷˩(10-10)=1÷˩(1/1010)=1÷1/105.=105. 2. Review of Course Skills and Concepts. (2.1). Resistance(R)- Ohms, Capacitive reactance (XC)-Ohms, Inductive reactive(XL) -Ohms, Impedance(W)-Ohms. (2.2). q is a charge while Vis the voltage of the charge. (2.3). According to Newton’s law a force is essential necessary to change the state rest along a straight line. Consider a body in a resting position; the force is necessary to displace it. For a body in a uniform motion, it contains constant velocity. Velocity is a vector quantity that has both magnitude and direction. For velocity to be changed, both magnitude and direction has to be changed. A body moving along a circular path with a uniform speed thus its direction changes at every instant. According to Newton’s law a force must exist to bring such change in velocity, this force is the centripetal force. This force always seeks the centre as it acts Directed at the centre. If its force ceases to exist, the argument will move on a tangential path. It applies in case of planet going around the sun and electrons moving around the nucleus. (2.4). Electrical force is the force that exerts force to one another, for like charges the items will shift far apart whereas unlike charge, items attracts each other. Gravitational force acts on particle because of its gravitational attraction to other particles. Magnetic force is either attraction or repulsion that occurs between electrically charged particles due to their motion. (2.5). Metres [m] (2.6).metres/seconds [m/s] (2.7). Metres per square second (m/s2) (2.8). Periodic time is inversely proportional to frequency (2.9). For a given speed of light, it is directly proportional to its wavelength at a constant frequency (2.10). the given wavelength and frequency are inversely proportional. For an increased distance between peaks of a wave, the frequency will decrease with each peak passing through a fixed point. (2.11). Work Joule(J),-K.E-Joules, P.E-Joules(J), Torque-Newton per metre(N-m). (2.12). For an Ac capacitor circuit consider a capacitor that does not behave the same as resistor. The resistor allows a flow of electron through them directly proportional to the voltage drops. Capacitors oppose change in voltage by applying current by charging at a rate proportional to the discharge of new voltage. As electrons flow for a capacitor, it is proportion is directly equal to the rate of voltage change across the capacitor. The voltage opposed to changing generating another form known as reactance which is precisely opposite to the kind inductors exhibit. Mathematically if the relation between the current through the capacitor and the rate of voltage change across the capacitor becomes. I=de/dt this expression de/dt is the amount of instantaneous change in voltage a given time. Units for capacitance in farads, whereas the instantaneous current (I) is in ampere. In this case, a pure capacitor voltage lags capacitors current by 90ᶱ for a current that flows through a capacitor it becomes reaction against the voltage change that occurs across it. Thus, the instantaneous current becomes zero. For an instantaneous voltage, that is at peak whenever the instantaneous amount is at peak whenever the instantaneous voltage is at maximum. A voltage wave that is -90 out of phase with the current wave found. (2.13).For a purely inductance circuit, the voltage and waveforms are not in phase. An inductance opposes change in current due to back emf effect. When a voltage flows, current rises to reach a peak value after certain duration. For an inductance circuit the current “LAGS” voltage. For a DC circuit, current generated goes to steady state as duration of the steady state is of time constant circuit voltage continuously varies. Current Alter for an inductor circuit so that peak values are at a quarter cycles. A phase shift occurs in a circuit due to the voltage and current that no longer rise as a phase together (Jameson, 34). (2.14). A DC circuit involves current flowing in one direction whereas AC currents have voltage oscillating in a sine wave. The relationship V-IR=Iosinwt in this circuit which involves only resistors the voltage and current is in phase with each other such peak voltage at every instant due to peak current. 4. Class problems (4.1). C=[(3.0×108)÷1.5] ANS=2.0×108 (4.2).----- 1.Review of Basic Skills and concepts. (1.1) .0.56m. 1.2). 16cm (1.3). 0.0023m2. (1.4).16cm2 (1.5). 2300cm3. (1.6). 0.000168m3 (1.7). 4A (1.8) .1µF (1.9). 1×1012ƿF. (1.10). 4.80652971×10-13J (1.11). S×S×S=(S3)where S is the length of the cube edges (1.12). Cubic centimetre (cm3) (1.13) 1C (1.14). X=1÷˩(10-18).=1÷1/˩(1018).=1÷1/10-9.=109. 2. Review of Course Skills and Concepts (2.1). Resistance(R)-Ohms, Capacitive reactance(XL)-Ohms, Inductive reactance(Xc)-Ohms, Impedance(W)-Ohms. (2.2). For an AC circuit, an inductor produces inductive reactance which causes current to lag the voltage by 90 degrees as inductor reacts to changing current as a reactive component the opposition that an inductor offers is the inductive reactance caused by the inductor reacting to change in ac source. Both the inductance and frequency determine the magnitude of this reactance whereas for ac circuit the capacitor produces reactance which causes the current to lead voltage by 90 degrees. As the capacitor reacts to changing voltage a reactive component that offers opposition is the capacitor due to changing ac source. In comparison with inductive reactance, the equation of capacitive reactance varies inversely with the frequency. (2.3). Electrical force is a force that exerts force to one another, for like charges the items will shift far apart whereas unlike charge, items attract each other. Any gravitational force acts on particle because of its gravitational attraction to other particles. Magnetic force either occurs as attraction or repulsion that occurs between electrically charged particles due to their motion. (2.4). Metres per second (m/s) (2.5). Periodic time is inversely proportional to frequency. (2.6). Hertz (Hz). (2.7). For a given speed of light, it is directly proportional to frequency under a constant wavelength. (2.8). The given wavelength and frequency are inversely proportional. For an increased distance between peaks of a wave, the frequency will decrease with each peak passing through a fixed point2.9. Work Joule (J),-K.E-Joules, P.E-Joules (J), Torque-Newton per metre (N-m) (2.10). Tesla (T) 1.Exit Questions (1.1). 300k. (1.2). 0˚C. (1.3). 300k. (1.4). True. (1.5).323k. (1.6). The frequency of a wave decreases as the wavelength increases. (1.7). 1.762394227*1018J. (1.8). 3.432830*1019V 2. Practice Homework. 1.1. Inverted, Same size at a distance of 25cm. (1.2). (1.1.1) 1.2.(1.1.1) (a)1.3.(1.1.3) (1.3(1.1.4) (b) 2. Practice Homework. 1.1. Inverted, Same size at a distance of 25cm. 1.2.(1.1.1) (1.3).(1.1.3) (1.2). 3. Priming Homework. (3.1). Real inverted and diminished image formed. (3.2). Real and inverted (3.3). An infinitely large real and inverted image is formed. (3.4). 1010₳ (3.5). 108 ₳. (3.6). 3.0˟ 109 ₳. (3.7). f=2.5m. (3.8).-15 (3.9). (Real). (3.10). Wavelength 1. Review of Basic Skills and concepts. (1.1). 1m2. (1.2). 160cm2 (1.3). 230,000cm 3. (1.4). 0.000005m3. (1.5).1A. (1.6). 1.0*10^3µF (1.7). 1.0*10^6µF. (1.8). 51.26965˟10^-19 J (1.9). 100K. (1.10). 0K. (1.11). 233K (1.12). Ӆr2. (1.13). Square metre(m2). (1.14). 1C .(1.15) .X=1÷1/˩(64*10-22).=1÷1/8*˩(10-22).=1÷1/811.=8*1011. 2.Review of Course skills and concepts. (2.1). Resistance(R)-Ohms, Capacitive reactance (XC )-Ohms, Inductive Reactance(XL)-Ohms, Impedance(W)-Ohms. (2.2). For an AC circuit, an inductor produces inductive reactance which causes current to lag the voltage by 90 degrees as inductor reacts to changing current as a reactive component the opposition that an inductor offers is the inductive reactance caused by the inductor reacting to change in ac source. Both the inductance and frequency determine the magnitude of this reactance whereas for ac circuit the capacitor produces reactance which causes the current to lead voltage by 90 degrees. As the capacitor reacts to changing voltage a reactive component that offers opposition is the capacitor due to changing ac source. In comparison with inductive reactance, the equation of capacitive reactance varies inversely with the frequency. (2.3). The Fundamental law of electrostatic summarise that a force that exist between two charged particles is directly proportional to a product of its charges and inversely proportional to square of its product of charges in them. (2.4). Centripetal force is the force that directs a body towards a curved path. the path it follows is orthogonal to velocity of the body towards a fixed point of the point of curved path. (2.5). Metre per square second(m2). (2.6). The given wavelength and frequency are inversely proportional. For an increased distance between peaks of a wave, the frequency will decrease with each peak passing through a fixed point. (2.7). Tesla(T). (2.8). Weber(Wb) (2.9). Thi is the ratio of the speed of light in a vacuum to the speed of light in a medium under consideration. (2.10). Dimensionless unit (2.11). For a mirror with a curvature radius of R the surface has a focal length of f=R/2 (2.12). .it is formed when an object is the position at c (2.13) It is formed by an object placed at between c and f 1.Exit Questions (1.1). Yes, (1.2). No (1.3). Applying this formula,2/R=1/f,2f=R,f=R/2=20cm/2=10cm and 0.1m. (1.4). Rea, same size as object (1.5). Real and inverted image formed. (1.6). Enlarged image (1.7).from convex lens equation. hi/ho=-Mi/Mo,hi/4cm=- 30cm/40cm.=hi=-3cm.image Will be inverted and same size as the object. (1.8). (1.8.4). 327˚ (1.9). The frequency of a wave decreases as the wavelength increases. 2. Practice Homework. (2.1). using 1/f=1/do+1/di, 1/10=1/20+1/di, di=20cm, also, hi/ho=-di/do,hi=-3cm.The image will be inverted, same size as the object. (2.2). (2.3). POWER =1/focal point length in metres..f=-100cm=-1m.=1/-1=-1D (2.4). ᴓsin-1. =1/2.5=0.2.sin ᴓ=23.5674˚ 3. Classical Homework. (3.1). c=3.0*10^8m/s, Refractive index=1.5.speed of light in benzene = (3.0*108 ÷1.5)=2.0*108m/s (3.2). Power =1/focal length in metres=1/0.3=3.33D 4.Priming Homework (4.1). 1011₳ (4.2). 108₳ (4.3). 3.0108₳ (4.4). 10-9₳. (4.5). 10-9m. (4.6). 2.0*10-7m (4.7). 5.48*10-7m (4.8).4.56*10-8 m (4.9). 1.8912*10-6 m (4.10). Interference of the wave is a process whereby two or more waves with frequency and wavelength that combines to form of wave with amplitude whose amplitude is the sum of the interfere ring waves. (4.11). For a given Diffraction, it is the design of bending of waves around obstacles by passing through an aperture or opening. (4.12) . Fringes referred to a band formed by contrasting the brightness that occurs produced by diffraction. (4.13) .time, Cycles per second (4.14). Inverse (4.15). 0 (4.16). 0.984807 (4.17). 1 (4.18). It cannot be greater than 1. (4.19). 0.1mm (4.20). 0.001cm (4.21). 2 lines (4.22). 0.02 lines. Work cited Jameson ,G.H.Electical Analysis on physics.London.Macmillan publishers.(2004)22:34-45. Read More