The explanation for deriving the equation, c = 4 L N T , to find the speed of light , using an apparatus including the source, S , from where the light goes to an interrupter, K , and is then reflected by a mirror, M , onto a rotating wheel. If the light incident on the wheel passes between the teeth of the wheel, it can be observed and if light, on the way back, hits the tooth of wheel, it cannot be observed. The speed of light can be measured by evaluating the time interval between teeth crossing the beam and distance light travel in this time interval. Given that, L is the distance between the wheel and the mirror, T is the period of rotation of the wheel and N is the number of teeth in the wheel (the width of one tooth is equal to the width of the gap between the teeth).
The explanation for deriving the equation, c = 4 L N T , to find the speed of light , using an apparatus including the source, S , from where the light goes to an interrupter, K , and is then reflected by a mirror, M , onto a rotating wheel. If the light incident on the wheel passes between the teeth of the wheel, it can be observed and if light, on the way back, hits the tooth of wheel, it cannot be observed. The speed of light can be measured by evaluating the time interval between teeth crossing the beam and distance light travel in this time interval. Given that, L is the distance between the wheel and the mirror, T is the period of rotation of the wheel and N is the number of teeth in the wheel (the width of one tooth is equal to the width of the gap between the teeth).
Solution Summary: The author explains the formula for deriving the equation, c=4LNT, to find the speed of light, using an apparatus including the source and interrupter.
Definition Definition Rate at which light travels, measured in a vacuum. The speed of light is a universal physical constant used in many areas of physics, most commonly denoted by the letter c . The value of the speed of light c = 299,792,458 m/s, but for most of the calculations, the value of the speed of light is approximated as c = 3 x 10 8 m/s.
Chapter 25, Problem 45GP
To determine
The explanation for deriving the equation, c=4LNT, to find the speed of light, using an apparatus including the source, S, from where the light goes to an interrupter, K, and is then reflected by a mirror, M, onto a rotating wheel. If the light incident on the wheel passes between the teeth of the wheel, it can be observed and if light, on the way back, hits the tooth of wheel, it cannot be observed. The speed of light can be measured by evaluating the time interval between teeth crossing the beam and distance light travel in this time interval. Given that, L is the distance between the wheel and the mirror, T is the period of rotation of the wheel and N is the number of teeth in the wheel (the width of one tooth is equal to the width of the gap between the teeth).
A series RCL circuit contains an inductor with inductance L=3.32 mH, and a generator whose rms voltage is 11.2 V. At a resonant frequencyof 1.25 kHz the average power delivered to the circuit is 26.9 W.(a) Find the value of the capacitance.(b) Find the value of the resistance.(c) What is the power factor of this circuit?Ans: C=4.89 μF, R=4.66 Ω, 1.
A group of particles is traveling in a magnetic field of unknown magnitude and direction. You observe that a proton moving at 1.70 km/s in the +x-direction experiences a force of 2.06×10−16 N in the +y-direction, and an electron moving at 4.40 km/s in the −z-direction experiences a force of 8.10×10−16 N in the +y-direction. What is the magnitude of the magnetic force on an electron moving in the −y-direction at 3.70 km/s ? What is the direction of this the magnetic force? (in the xz-plane)
A particle with a charge of −5.20 nC is moving in a uniform magnetic field of B =−( 1.22 T )k^. The magnetic force on the particle is measured to be F=−( 3.50×10−7 N )i^+( 7.60×10−7 N )j^. Calculate the x component of the velocity of the particle.
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