Physics question and answers for July 11, 2023
- Q 1. The photoelectric effect experiment is often carried out byusing a mercury light source to illuminate a particular surface.The emission spectrum of mercury has strong lines at wavelengths of365.5 nm...
- Q Part AHow many conduction electrons are there in a 4.50 mm diameter goldwire that is 30.0 cm long?Part BHow far must the sea of electrons in the wire move to...
- Q A piece of ice having a mass of 2 kg and an initial temperatureof −272 ℃ (very cold!) is dropped into a container of water at 25°C. Remember that: The...
- Q 1. Consider placing two point charges on an x-y plane, the firstcharge, q1, at (x1, y1), and the second charge , q2, at (x2,y2).2. Derive an expression for the electric...
- Q Please answer based on nuclear activity and please identify theterms for question 1, part a and part b. Please answer the secondpart of the question, question 2 in an answer...
- Q A copper flask (??????? = 51 × 10−6 1 ℃ ) with a volume of 500cm3 contains 490 cm3 of olive oil (???? = 0.68 × 10−3 1 ℃ )...
- Q Two charged proteins P1 and P2 are located at positions (1m,1m)and (-1m,1m) respectively on a Cartesian coordinate system. Theyhave charges of 1.0 nC and -1.0 nV respectively. A key enzyme...
- Q Rotating NucleusAccording to a crude model, the 7Li nucleus is auniform solid sphere of mass 1.16×10-26kg andradius 2.30×10-15m which spins about itsdiameter. The angular momentum of this spinning lithium nucleus...
- Q A certain elastic string has a spring constant of 18n/m, arelaxed length of 3 meters, and a mass of 20 grams. A 500 g mass ishung on a string and...
- Q An airplane propels itself eastward with speed v. A crosswindwith speed u is directed at an angle θ (0 < θ < π) north ofeast. What is the distance travelled...
- Q 2. i. Consider a binary source alphabet where a symbol 0 isrepresented by 0 volt and asymbol 1 is represented by 1 volt. Assume these symbols aretransmitted over abaseband channel...
- Q Q1 We have naturally occurring radioactive material with thechemical formula (Ce,La,Nd,Th)(PO4,SiO4). A sample of the ore ismined and is concentrated to 5%, 10%, 25% and 100% monazite So foursamples are...
- Q [13 marks](a) An object is subjected to the force F =4x4 z ı ^ + 4 z3k ^ N, wherex and z are in metres. The object can only move...
- Q As part of previous adventures, formerly conjoined identicaltwin, Sue, is now 13.4 years younger than her identical twin Lou.(The anniversaries of their birth are no longer the same day.) Itis...
- Q Question 7: Cosmologya. Write 2 – 3 sentences identifying and describing the most widelyaccepted scientific theory for the formation of the universe.b. Write 2 – 3 sentences explaining redshift and...
- Q A brass plug is to be placed in a ring made of iron. At 20 ∘C∘C,the diameter of the plug is 8.754 cmcm and that of the inside ofthe ring...
- Q How was the Big Bang different from an ordinary explosion? Wherein the universe did it occur?
- Q A thin, horizontal 11cm×11cm11cm×11cm copper plate is chargedwith 1.7×1010 electrons. Consider the electrons areuniformly distributed on the surface.Part AWhat is the strength of the electric field 0.1 mmmm above thecenter...
- Q Two brass rods AB and BC, each of uniform diameter, will bebrazed together at B to form a nonuniform rod of total length L=110m that will be suspended from a...
- Q Consider an infinitely long, straight coaxial cable consistingof a homogeneous cylindrical center conductor with radius a and asurrounding conductive tube (shield) with inner radius b.The space between the center conductor...
- Q Please solve a Laplacian in spherical form with completedetails?
- Q As you observe a standing wave on a string (e.g. with a strobelight), you notice certain times when the string is completelyflat. What has happened to the energy stored in...
- Q a) Determine the amount of heat per gram which must be removedto convert 110 OC steam (H2O(g)) into –10 OC ice(H2O(s)), then findthe total heat removed if there is 9.50...
- Q 1. (20pts) Design a 3-bit counter that counts from 0000 to 1111using JK flip/flops. Do not forget to include the carry to detectoverflow.
- Q Are Maxwell's equations symmetric?What is the magnetic monopoly problem?How are magnetic monopoles found?Explain by reference.
- Q 2. The Hungry TunaWhat is the minimum number of ï¬sh a 3m long blueï¬n tuna wouldhave to eat to fuel a non–stop voyage across the Atlantic in twoweeks if they...
- Q A student, starting from rest, slides down a water slide. On theway down, a kinetic frictional force (a nonconservative force) actson her. The student has a mass of 62.0 kg,...
- Q 1.One hydraulic press has a 2.0 cm diameter piston and another pistonhas a 8.0 cm diameter. What force must be applied to the smallestpiston to balance a force of 1600...
- Q The conductivity of carbon is about 3*(10^4) S/m.a. What size and shape sample of carbon has this conductance?(Conductance is equal to 1/R).b. What is the conductance if every dimension of...
- Q 82Rb with T1/2=1.25min, like 81Rb is a positron emitter that isuseful for heart perfusion imaging. It can be produced by thenatural decay of 82Sr  (T1/2=25 days).1) Suppose you have a sample...
- Q a. Explain the differences between analogue and digital signalsand systems. Use sketches to support your explanations.b. Explain the characteristics of an amplifier of your choice,using supporting sketches.c. Draw and explain...
- Q 1) Assuming you start with 1 mCi 52Fe and no 52mMn, what willthe activity of 52mMn be after 10 min? Answer in mCimCi.2) What will be the activity in previous...
- Q A 5.0mm diameter hole is 1.0m m below the surface of a 2.0mdiameter tank of water. What is the rate, in mm/min, at which thewater level will initially drop if...
- Q Three charges of +Q are at the three corners of a square of sidelength L. The last corner is occupied by a charge of -Q. Find theelectric field at the...
- Q You push a 2 kg block down a ramp. You apply a force of 9 N thatis directed along and down the ramp with a coefficient of kineticfriction of 0.20....
- Q This lab uses three friction carts with different surfaces onthe bottom (cork, felt, and Teflon) and a set of masses totaling1250 g. The carts are pulled with a piece of...
- Q (a) Describe the behaviour of positive and negative chargeswithin a p-n junction. Use a sketch/sketches (drawn by hand) tosupport your description.(b) Show your knowledge and understanding of the actions involvedwith...
- Q 1. Kingda Ka is one of Six Flags famous roller coasters. It doesnot have a running engine. A hydraulic launcher “shoots†the rollercoaster with an initial velocity of 57 m/s...
- Q Discuss the technical and social aspects of the possibility thatsolar power could be a major energy source for the future ofmankind
- Q 1. Imagine that the energy generation rate in the center of theSun were suddenly to decrease.How would the size of the core, and hence density, change inresponse to changes you...
- Q two turning forks have the same amplitude but diffrerentfrequency. at the same time produce a comx wave . what is tthiscalled ?if the period of the compelx wave that produce...
- Q Please, answer below questions:Remember units. Use the correct number of significantfigures.1. A laser produces a beam of light with aradius of 1.7 mm. Its energy density is 9.17 10-7 J/m3...
- Q 1) An insulating sphere with radius R has a uniform positivevolume charge density of Ï. A solid metallic shell with innerradius R and outer radius 2R has zero total charge....
- Q How it is possible to improve the energy resolution of the Gedetector electronically?
- Q Hydrostatic in bottle1. pierce three holes of the same size in bottle in differentheights with a soldering iron.2. pierce three other holes which have the same size but arebigger than...
- Q Astronomers have observed a small, massive object at the centerof our Milky Way Galaxy. A ring of material orbits this massiveobject; the ring has a diameter of about 11 light-years...
- Q n this problem, we're going get a rough estimate the amount ofuranium fuel it would take if the US recieved all its electricalpower from nuclear power plants.The size of a...
- Q A block of mass m1 = 2.20 kg initially moving to the right witha speed of 3.10 m/s on a frictionless, horizontal track collideswith a spring attached to a second...
- Q Suppose a 13.0 kg fireworks shell is shot into the air with aninitial velocity of 62.0 m/s at an angle of 80.0° above thehorizontal. At the highest point of its...
- Q Question #2 of Assignment 9 involved an electrical generationsystem including a generator with an efficiency of 98%, atransmission line with a 94% efficiency, and finally a light bulbwith a 12%...
- Q 200g of water at 30°C is put in a 1000 W (J/s) microwave oven.For simplicity assume that all the energy produced by the microwavegoes into the water. The microwave runs...
- Q 3. A graduated cylinder is filled with 50 mL of water . An aluminumcylinder is dropped , the water rises to 58 mL . As you also add acopper cylinder...
- Q a) Dr. Liu is learning how to juggle. He tosses a tennis ball(probably bad choice since it is so bouncy) up at 1.6 m/s at aheight 1.6 m above the...
- Q Look up 3 examples of the mesh method of circuit analysis useresistors only, secondly give 3 examples of the nodal method ofcircuit analysis. Compare and contrast both methods to kvl...
- Q thermodynamics:why can’t the van der Waaks equation extend itself to the lowtemperature regions near absolute zero ?
- Q The characteristic impedance of a two wire cable is 100 Ω andthe VSWR on the line is 3. The cable is 60 cm long. The frequencyof the signal on the...
- Q Which of the following experiments will produce constructiveinterference at the point of view of the observer (eye). The indexof refraction of the soap film is 1.25 and there is air...
- Q Construct a list for each radionuclide, its half life, mode ofdecay, and principal type(s) and energies of emitted radiations.Avoid radiations with energies < 10 keV or yields < 1%. Puteach...
- Q 1. Determine the spring constant for the stiffer spring. Youranswer should include a plot of yur data. NOTE the stiss spring hasmaximum lenght of 17 cm .2.Determine the spring constant...
- Q The power usage (P = (E^2)/R) of a strip heater is to bedetermined by measuring heater resistance and heater voltage dropsimultaneously. The resistance is to be measured using an ohmmeterhaving...
- Q Q1// Do the electrons or phonons carry the greater partof the heat current in a metal? Explain that.Q2//Explain the origin of the energy gap and find themagnitude of the energy...
- Q A train accelerates at 1.41 m/s2 from rest to asteady speed in 68.48seconds. It maintains that speed for 29.55miles and then starts slowing down at 1.39 m/s2 untilcoming to a...
- Q Q6).A coil with 5 windings or turns, and an area of0.0679m2 rotates in a uniform magnetic field ofmagnitude 0.886T. The emf induced in the coil has the followingform as a...
- Q why isnt carbon 14 dating reliable?c
- Q the susceptibility of Ge is -0.8*10^-5 taking the radius ofthe ion core to be 0.44A estimate the percentage of contribution ofthe covalent bond to susceptibility,Ge has density of 5.38 gm/m^3and...
- Q You visit a national park with your friend one weekend. Youencounter an old railroad tunnel which is very dark and you are notsure if the tunnel is blocked on the...
- Q Moving electrical charge feels a force by magnetic field -RightHand Rule 2 The attached figure shows the right hand doing this inour second right hand rule (RHR2) for finding the...
- Q A current of 5.20 kg / s of water vapor at 40.0 bar and 320 ° Cis passed to an adiabatic turbine. The outlet pressure is 20.0 bar.The isentropic efficiency...
- Q Heat conduction from a hotter object to a colder object througha barrier (e.g. warm inside out to cold outside air through awindow) is descrbed by Q?t=kAL|T1?T2| where k is the...
- Q 3.70 kg / min of air as ideal gas enters a steady statecompressor that runs adiabatically. Air enters P1 = 300 kPa and T1= 440 K and exits at P2...
- Q Sam and Ryan stand at some distances apart in a park, eachmaking sound with an identical 512Hz tuning fork. A bird resting atthe midpoint between them detects a sound of...
- Q PLEASE TYPE YOUR ANSWERPick and explain indetail one of the following learning goals from Chapter 3 (Motionin Two or Three Dimensions). Additionally, and real lifeapplication of the topic you are...
- Q A hollow cylinder (hoop) is rolling on a horizontal surface atspeed v = 3.3 m/s when it reaches a 16 ? incline.How far up the incline will it go?How long...
- Q A very large conducting plate (grounded) covers the yz plane. Aninfinitely long wire with constant linear charge density λ isplaced at a distance d from the plate. You can assume...
- Q What beat frequency would be heard by a tuba player in amarching band, of a note with a frequency of 4.50E2 Hz and thenotes echo off a stationary building; if...
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