Physics question and answers for July 05, 2023
- Q In a colliding beam storage ring an antiproton going east passesa proton going west, the distance of closest approach being . Thekinetic energy of each particle in the lab frame...
- Q 1. Optical fibers can be classified according to thenumber of modes and their refractive index profiles. Explain whatyou know about optical fibers with this classification! Why issinglemode optical fiber widely...
- Q Calculate the macroscopic thermal neutron absorption crosssection for uranium enriched to 5% a/o 235U.
- Q 1) Draw the high frequency MOSFET equivalent circuitmodel.2) Find an expression for the unity current gain frequency.3) Calculate fT when tox= 5nm,gm=0.1 mA/V, W=5L=0.1 um.4) What are the harmful effects...
- Q A conductor with conductivity σ1 is perfectlypolished so that the only source of loss on reflection comes fromthe conductivity of the material.a. For a perfect conductor, prove that the angle...
- Q How does the single-slit diffraction pattern look in comparisonto the double-slit interference pattern? Is it possible to have adouble-slit pattern without the single-slit pattern overlaid?
- Q A body of mass 15.0 kg is traveling at 5.3 m/salong the positive x-axis with no external force acting. At acertain instant an internal explosion occurs, splitting the bodyinto two...
- Q 1. A 1200 kg roller coaster is given an initial velocity of 28m/s (not the answer to problem 7) and travels uphill to aheight of 30m above the ground. What...
- Q 1. Isolated molecular clouds can have a temperature as low as 12K and a particle density as great as 1.20×105 particlesper cubic centimeter.Part A What is the minimum mass that...
- Q As the winter passes, the Earth spins as usual around the Sun.On a cold February night just past midnight, a lone astronomerspots an unusual object in the starlit sky. Near...
- Q A mass weighing 12 pounds stretches a spring 2 feet. The mass isinitially released from a point 1 foot below equilibrium with anupward velocity of 4 ft/s.(a) Find the equation...
- Q In the figure, a 0.24 kg block of cheese lies on the floor of a920 kg elevator cab that is being pulled upward by a cable throughdistance d1 = 2.1...
- Q The distance between the eyepiece and the objective lens in acertain compound microscope is 21.4 cm. The focal length of theobjective is 0.480 cm, and that of the eyepiece is...
- Q A 1kilogram wooden block floats on the water with half of the blocksubmerged. How much mass wouldhave to be placed on the block tojust submerge it?a. 1 kgb. 3 kgc....
- Q A bicyclist is pedaling down a road at 8 m/sec. A car approacheshim from behind. When the car is preparing to pass he sounds hishorn. At first the bicyclist hears...
- Q A spherical shell has inner radius RinRin and outer radiusRoutRout. The shell contains total charge QQ, uniformlydistributed. The interior of the shell is empty of charge andmatter.Part AFind the electric...
- Q a step-index optical fiber with a core diameter of80μm has a relative refractive index difference of 1.5% with a corerefractive index of 1.48 at a wavelength of 850nm. how many...
- Q A long circular copper pipe (thermal diffusivity 111 mm2/s) withinner radius 1 cm and outer radius 1.2 cm is placed in an ice bath(0â—¦C) for a very long time. Then,...
- Q Artificial Intelligence question:Why might we prefer the cross-entropy as an error function in asigmoid-based network?
- Q question 1 -Suppose that the Lo = 661 m main span of a steel bridge had noexpansion joints. How much longer would the bridge be if thetemperature increased from a...
- Q 1. What are ODP transparencies? What is their purpose? Does adistributed system need to provide all transparencies? How aretransparencies provided in an ODP-compliant system.2. Describe the five ODP viewpoints. Why...
- Q In a Nuclear reactor a neutron of high speed(typically 10^7 m/s) must be slowed to 10^3 m/s so that it can havea high probability of interacting with isotope of Uranium...
- Q A lens produces a real image. Which is true?The lens must be a diverging lens.The lens must be a converging lens.The lens could be either a diverging or a converging...
- Q Translation look-aside buffers (TLBs): what are they? Whatproblem are they trying to solve? Why must a TLB be flushed onevery context switch? What hardware support is necessary to avoidTLB flushing...
- Q A negative 18 nC charge is at the origin and a chargeof 6 nC is located at 0.4 m and 1.2 m. A point P is situated at xand y...
- Q On the day his daughter is born, Jack leaves her on Earth anddeparts on a spaceship to travel around the universe at a constantspeed of 0.91c. He returns to Earth...
- Q Chapter 04, Problem 036During a tennis match, a player serves the ball at 25.5 m/s,with the center of the ball leaving the racquet horizontally 2.55 mabove the court surface. The...
- Q Thewavefunction of a harmonic wave on a string is y(x,t) =0.004sin(49.5x + 388.0t), where x and y are in m and t is in s.What is the speed of the...
- Q (a) Do you expect silver (Ag) to have a higher or lower speed ofsound than gold (Au). Both elements are in the same column of theperiodic table and have a...
- Q What are the main challenges with EUV lithography for sub-10nmdevice generations?
- Q For a Michelson interferometer, the distances of the twoperpendicular mirrors from the beam splitter differ by 1.7 mm. Ifthe interferometer is equipped by a sodium source having n = 589nm,...
- Q 2) How does the clumping of dark matter differ from the clumpingon luminous matter?
- Q Doubly‑charged calcium ions, Ca 2 + , are released into yourbloodstream and flow through your capillaries. The diameter of acapillary is about 8.90 μm, calcium ion concentrations areapproximately 1.10 mol/m...
- Q prove the sufficiency, let L be any closed contour in region Roccupied by field A, suppose curl A=0 everywhere in R. then, sinceR is simply connected. L is the boundary...
- Q Polaris is not a particularly bright star. To find Polaris, use thetwo stars in the bowl of the Big Dipper, farthest away from thehandle. These two stars point to Polaris...
- Q 1. a) Huygens' Principle. Pick a type of propagation of wavesthat light rays don't exhibit. Several to pick in the notes. On asheet of paper, graph the starting wavefront of...
- Q A steel wire with mass 21.1 g and length 1.22 m is strung on abass so that the distance from the nut to the bridge is 1.10 m.(a) Compute the...
- Q In this exercise you will return to your SpecialityCoffee classwhich you created for the last coding activity (a sample solutionto this exercise will be shown below the entire question if...
- Q 1. Initially, a particular sample has a total mass of 390 gramsand contains 64 ⨯ 1010 radioactive nuclei. These radioactive nucleihave a half life of 1 hour. (a) After 4...
- Q 2) Explain why are the vectors needed to describe aquantum state?3) Why are the operators linear in quantummechanics?4) What meaning does the eigenvalues problem have inquantum mechanics?5) Which operators have...
- Q Consider the wavefunctionΨ(r,θ,φ) = A(1 – br) exp[-br]a. Show that this wavefunction satisfies the Schroedinger equationfor the Hydrogen atom with zero angular momentum. What is itsenergy eigenvalue? What is b?...
- Q Suppose you walk 7.5m in a direction 20degrees west of north andthen travel 17m in a direction 40degrees south of west. a) how farare you from your starting point in...
- Q A 1solar mass star has two planets. One is observed to transit everyyear and the other twice a year. If their orbits are circular, howcan you determine the distance between...
- Q The most common processes used in the treatment ofdomestic and industrial wastewater are carbon removal,nitrification, denitrification and methanogenesis processes.1- Describe in detail how wastewater is treated in these processes.Classify the...
- Q When propeller passes fluid through it as in the case of thepropeller on a boat. List what you would use to calculate the workdone for the following:1. The work done...
- Q A 410-turn solenoid, 21 cm long, has a diameter of 4.0 cm . A12-turn coil is wound tightly around the center of thesolenoid.If the current in the solenoid increases uniformly...
- Q A ball is shot horizontally at 3 m/s and is in the air for 3seconds. How far did it go?
- Q Once you have detected the possible presence of a blackhole, what data do you need to prove that it is indeed a black holeand not a very massive star cluster?
- Q Discuss the formation of shadows from broad and point lightsources. (this could be an eclipse).TY!
- Q Two coherent wave sources 5 cm apart make ripples in a watertank, producing a Moire pattern. The wavelength of the waves is 3cm. 1) Find the angle between the perpendicular...
- Q The motion of an harmonic oscillator is governed by thedifferential equation 2¨x + 3 ˙x + 4x = g(t).i. Suppose the oscillator is unforced and the motion is startedfrom rest...
- Q A piece of insulated wire is shaped into a figure eight as shownin the figure below. For simplicity, model the two halves of thefigure eight as circles. The radius of...
- Q A place-kicker must kick a football from a point 36.0 m (about40 yards) from the goal. Half the crowd hopes the ball will clearthe crossbar, which is 3.05 m high....
- Q 1. A large copper tank is 3 m long when it’s at room temperature20 oC. When the tank is partially filled with hot water, itstemperature rises to 95 oC. What...
- Q i. How can you reduce the effects of aliasing during imageinterpolation (in the case of most typical images and interpolationschemes)?ii. Explain why this works (in most of the typical cases).
- Q 1. (a) With the aid of a labeled sketch, describe an apparatusfor the generation of x-rays.(b) With the aid of labeled sketches, describe the three primaryphysical mechanisms for the absorption...
- Q How many electrons have to be added to 1 milligram metal spheresuch that another +1C charge located 19 mm above the sphere will beable to hold that in the air?[Assume...
- Q When we talk about \"heat stress\" the black bulb temperaturerepresents what effect, where the energy comes from?
- Q A stone is dropped inside a well. The sound produced when thestone hits the bottom of the well is heard 4.3 s later. How deep isthe well, in meters? The...
- Q Al is twirling a ball horizontally around his head. The ballmoves in a circle becausethere is a force on the ball pulling it outward.tension in the string continuously pulls the...
- Q 1.If the amount of charge in 1 electron (elementary charge) isapproximately 1.6×10−19 C, calculate the number ofelectrons passing a point in the wire in 20 minutes when thecurrent is 1.0A3.2...
- Q A sinusoidal wave in a string is described by the wavefunctiony = 0.155 sin (0.525x -46.5t)where x and y are in meters and t isin seconds. The mass per length...
- Q An alpha particle with kinetic energy 10.5 MeV makes a collisionwith lead nucleus, but it is not \"aimed\" at the center of the leadnucleus, and has an initial nonzero angular...
- Q When it come to displacement sensors, we have manytypes of electrodes. Make a comparison betweenthem with respect to the size, usability, risks, and accuracy
- Q Calculate the instantaneous position of the Sun in thesky at “Solar Noon†on August 1st for Berlin,Tegel Airport (52.55º N, 13.28º E) in terms of Solar Altitude Angleand Solar Azimuth...
- Q A wire with a linear mass density of 1.08 g/cm moves at aconstant speed on a horizontal surface and the coefficient ofkinetic friction between the wire and the surface is...
- Q Explain how to calculate the expectation values of a H e- forradius, P.E, and K.E. using integration. (Assume H electron in 3Dstate)
- Q Please explain clearly. Thank you.Part 1.a. The dipole moment of a molecule is 6.17E-30 [C·m]. The dipolehas a separation of distance of d [m]. It is given that the dipolemoment...
- Q 1.Explain how a stringed instrument make music in terms of physicsand are the dimesions or size of the instrument for the music theymake?2.Explain how a wind instrument make music in...
- Q A hydrogen atom emits a photon when its electron falls from its3rd excited state (?=4) to its first excited state (?=2).Another electron in a box with sides of infinite potentialabsorbs...
- Q A submarine moves away from an undersea vertical cliff at aspeed vs = 10.0 m/s. It emits a sound wave at afrequency fe = 20,000. Hz, which travels to thecliff...
- Q Howdo you estimate the electric and magnetic fields across thesurface? illustrate with example
- Q InMay of 2016, Pluto was 32.65 AU from the Earth. Pluto and itslargest moon Charon orbit one another in 6.3872304 days; theirangular separation in May was 0.8265\". The barycentre of...
- Q Projectile Motion A projectile, launched over level ground from aheight of 450 meters above the flat sur face below, has an initialspeed of 175 m/s . The projectile is launched...
- Q Given the vector F1 = 100 N,Ѳ1 = 20o , and F2= 200 N, Ѳ2 = 90o  andF3= 300 N, Ѳ3=220o . Find the magnitude and direction of theresultant F=...
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