Gin this next question electrons of a given kinetic energy - instead of photons - are incident to an atom. while photon absorption is an all or nothing process, electrons can loose also just some kinetic energy. interaction of these electrons with the atoms in the target may result in emission of photons. which of the following statements are true? select all answers that apply. the kinetic energy of the "beam" electrons exceeds the binding energy of an electron in the target atom. the atom becomes ionized; left behind is a vacancy in a lower energy bound state. the kinetic energy of a "beam" electron exceeds the energy necessary to excite an electron (in the target atom) into an unoccupied higher energy level of another bound state. electrons (from the beam) can only give off all their kinetic energy in one interaction. electrons (from the beam) can interact several times with the target atom and lose some of their kinetic energy in each such interaction process.

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

5submission this assignment is worth 20 points total. you are required to submit the following by next lab: 1. (3 points) determine the equation for the output angular velocity ω2 = θ˙ 2 as a function of θ1, ω1 = θ˙ 1 and α. you must show all your work to receive credit. 2. (2 points) use the result of problem#1 to plot ω2 over 0 ≤ θ1 ≤ 360deg with ω1 = 360deg/sec. do this for α = {10,30}deg. show the results on the same plot and properly label the axes, title, legend. for this you can use matlab or ms excel. 3. (3 points) determine the equation for the output angular acceleration ω˙ 2 and create a plot similar to the one in problem#2. 4. (10 points) submit plots of the results (ω2 and ω˙ 2) obtained from creo/mechanism and compare them to results of problem#2 and problem#3. note that you should do these comparisons for the two cases with α = {10,30}deg. 5. (2 points) provide a brief explanation of the results. did they match? what are the implications as misalignment angle increases?

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?