Physics question and answers for August 20, 2023
- Q The emission wavelength lies between 275 nm and 450 nm and thelight yield per neutron is reported to be 20000 photons/MeV neutronenergy(a) What largest work function of a material used...
- Q Ernest Rutherford (the first New Zealander to be awarded theNobel Prize in Chemistry) demonstrated that nuclei were very smalland dense by scattering helium-4 nuclei (4He) fromgold-197 nuclei (197Au). The energy...
- Q 8.A pump at the bottom of a 0.60 meter deep fishpond sprays waterfrom the surface at 2.4 liters/minute. If the intake pipe at thebottom of the pond and output pipe...
- Q A heat engine made with an ideal gas with f = 5 degrees offreedom has 3 steps. Starting with a volume of 8 liters and apressure of 1.3 × 10^5...
- Q NASA has asked your team of rocket scientist about the feasibiltiyof a new satellite launcher that will save rocket fuel. NASA's ideais basically an electric slingshot that consists of 4...
- Q A computer disk drive is turned on starting from rest and hasconstant angular acceleration.Part AIf it took 0.420 s for the drive to make its secondcomplete revolution, how long did...
- Q if a rocket was orbiting a planet and then the mass of theplanet suddenly decreased what would happen to the movement of therocket?
- Q Explain the differences between primary electrons,secondary electrons, Auger electrons, and backscatteredelectrons and how they are used in SEM imaging andanalysis
- Q 47. a) Imagine that you are conducting an activitywith a laser to create an interference pattern. Use the appropriate equations to predict twoways (other than the way described in the following example)...
- Q 1) projectile blitz:a) given an initial velocity (Vx0,Vy0) off a cliff of height H,whatis the final velocity? What is the horizontal distancetraveled? How much time is the projectile in the...
- Q An open container holds ice of mass 0.570 kg at a temperature of-13.7 ∘C. The mass of the container can be ignored. Heat issupplied to the container at the constant...
- Q 1) A cylinder of Mass M and radius R, and initialspeed V, startsrolling up an incline of angle theta relative to horizontal.Assumingno slipping, how high up does the cylinder get?2)...
- Q A particular conductor is x = 50.0 mm long by y = 10.0 mm wideby z = 1.0 mm thick.This conductor is inserted into a 0.50 T magnetic fieldaligned parallel...
- Q Explain the working of a Poincare Sphere.
- Q A cell phone sends and receives electromagnetic waves in themicrowave frequency range.a) Explain the physics of how an oscillator creates these waves.b) Research the possible side effects of using cell...
- Q Explain why the classical theory of light as an electromagneticwave (or of electrons as particles) is unable to explain thefollowing phenomena whereas quantum mechanics is successful.(1) The turn-on voltage of...
- Q #5b. Suppose that the two masses in the previous problem remainsseparated by a distance d meters, but the second mass is replacedby a mass that is 8.0 times smaller than...
- Q An 11.0-W energy-efficient fluorescent lightbulb is designed toproduce the same illumination as a conventional 40.0-W incandescentlightbulb. Assuming a cost of $0.116/kWh for energy from theelectric company, how much money does...
- Q Derive/explain how thermal conductivity can be explained interms of the kinetic theory of gases.
- Q 1: Under high resolution, the spectral line of Sodium (Z = 11)around 589 nm resolves into two lines at 589.5 nm and 588.9 nm dueto spin-orbital coupling splitting the 1p...
- Q Diamagnetic susceptibility of atoms:(a) Estimate the upper limit for thediamagnetic moment of anatom.Use an atom with many electrons such as Bi. From the magneticmoment, calculate the diamagnetic susceptibilityand compare it...
- Q An electric current passes through a metal strip 0.60 cm by 6.0cm by 0.18 mm , heating it at the rate of 52 W . The strip hasemissivity e=1.0and its...
- Q A horizontal incident beam consisting of white light passesthrough an equilateral prism, like the one shown in the figureWhat is the dispersion (θv−θr) of the outgoing beam if theprism's index...
- Q A hollow ball has mass M=2.0kg, radius R=0.35m, and moment ofinertia about the center of mass I=(2/3)MR2. The ball isthrown without bouncing, to the right with an initial speed 2.0m/sand...
- Q A charge Q is distributed in the volume of a sphere of radius Rwith a density non-uniform load cubic p = B (R - r) , where b is aconstant...
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