Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
The electron beam Cathodes and anodes An electron gun usually consists of a cathode and an anode. The cathode is a filament that is connected to a potential difference (filament voltage), and the resulting current heats the filament to incandescence. Electrons boil off from the glowing surface of the cathode much like the filament in an ordinary light bulb. They then accelerate toward a positively charged electrode called the anode which had an opening through which some of the electrons pass. The result is a stream of the electrons whose kinetic energy is determined by the change in their electrical potential energy as they travel from the hot cathode toward the anode. If the potential difference between the cathode and anode is V (anode voltage), then the increase in the kinetic energy of the electrons is given by: ?K = e Vwhere e is the charge of the electron. Electrons leave the cathode with very little initial kinetic energy, so we can safely approximate ?K ~ K, where K is the kinetic energy of the electrons that reach the anode. Therefore, the kinetic energy of the electrons that go through the slit (at the anode) is: K = e VUse the expression above to write an equation for the speed of the electrons as a function of the anode voltage. This will be equation 1. Write this expression in the appropriate space at the beginning of activity 4 in the manual. What is the main source of kinetic energy of the electrons?
A dog running in the +y-direction at 7.0 m/s hears its owner call from behind, Compute the dog's change in velocity
What is the volume of the bubble when it reaches just below the surface of the lake, where temperature is 20°C.
A rider on a 16 m diameter Ferris Wheel is initially at traveling at 10 m/s. The Ferris Wheel slows to rest over two complete revolutions. How long does it take for the ferris wheel to stop
One car has twice the mass of a second car, but only half as much kinetic energy. When both cars increase their speed by 7.5m/s , What were the original speeds of the two cars
At each corner of a cube of 25.41 cm on a side there is a point charge Q = 8.360e-6C. Take V to be zero at infinity, what is the potential at the center of the cube
A particle is moving in a simple harmonic oscillator potential U(x)=(1/2)kx^2, Calculate the allowed wave functions and corresponding energies
A uniform horizontal rod of mass (M) and length (l) rotates with angular velocity (omega) about a vertical axis through its center. Determine the angular momentum of the system about the axis
Two metal spheres, each of mass 14 g and initially at rest, are dropped from a height of 6 m in an evacuated chamber. Find the difference in final speeds of the two spheres
Nine grams of water are placed in a 1.99 liter pressure cooker and heated to 535oC. What is the pressure inside the container
Nichrome wire of cross-sectional radius 0.758 mm is to be used in winding a heating coil. find the length of wire you must use to wind the coil
A 56.6-g ice cube is initially at 0.0°C, Find the change in entropy of the cube after it melts completely at 0.0°C
A 115-? resistor, a 51.7-mH inductor, and a 154-?F capacitor are connected in series to an ac generator. At what frequency will the current in the circuit be a maximum
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd