Physics question and answers for August 03, 2023
- Q Show by derivatives that two phases are in thermal equilibriumonly if their temperatures are the same. Show that two phases arein mechanical equilibrium only if their pressures areequal.  Â
- Q A coaxial cable consists of two long concentricconducting tubes of length l, the inner one of radius a and theouter one of radius b. Assume that the zˆ direction...
- Q Summarize this experiment of pendulum from purpose to procedureto analysis.Within your answer, include the theoretical equations.
- Q In a cathode ray tube, electrons are accelerated from rest by aconstant electric force of magnitude 6.40 × 10−17 Nduring the first 4.40 cm of the tube’s length; then they...
- Q Two protons, each having a speed of 0.910c in the laboratory,are moving toward each other.a) Determine the momentum of each proton in the laboratory inGeV/c.b) Determine the total momentum of...
- Q What is the difference between the root-mean-squared velocity(????) and the average velocity (?Ì…) of gas particles?
- Q A regular icosahedron, as shown in the figure, has an outerradius (defined as the distance from the centre to a vertex) of9.51 cm and an inner radius (defined as the...
- Q The photogates in the experiment are used to determine the speedof the gliders passing through. The photogates measure the time ittakes for the photogate beam to go from being unblocked...
- Q When we say that momentum is conserved for an isolated system,what specifically does that mean?
- Q Protons having a kinetic energy of 5.00 MeV (1 eV = 1.60 x 10-19J) are moving in the positive x direction and enter a magneticfield B = 0.025 T directed...
- Q A 7.50-kg box slides up a 25.0o ramp with an initial speed of7.50 m/s. The coefficient of kinetic friction between the box andramp is 0.333. You wish to calculate the...
- Q Describe how bremsstrahlung and characteristic x-rays arecreated. Why are there no characteristic x-rays created under 70kVp? Be thorough in your answer and cover each step in the process(2 points).Which x-ray...
- Q 3Objectives•To determine the relationship between kinetic,potential, and total mechanical energy for a cart on an incline.•Todetermine the work done by friction on a sliding cart.•To show thatenergy is not conserved...
- Q Refer to the illustration below. Light enters the stackedtransparent plates at an angle of from the normal at location zerocm in the x direction.Identify the refraction angle from the normal...
- Q 5 rems per year whole body occupational dose is the generallyagreed limit by the standard setting bodies. State your opinions onthis limit; do you agree with it?
- Q for materials classManipulating strengtha. Using words and visuals, briefly describe 4 strategies toincrease the strength of a metal.b. What do these strategies have in common in terms of theirmechanism?c. Use...
- Q A small meteorite (30 kg) is fallingthrough the earth’s atmosphere. It is moving very fast - in fact,faster than the terminal velocity it would have reached if had beendropped from...
- Q A cannonball is fired at a cliff 1000 m away and strikes it 250m above the level ground 5 seconds later.a. What is the angle (in degrees) with which the...
- Q Why can gravitational potential energy be ignored in a verticlespring with a hanging mass? My TA mentioned something about no workbeing done by GPE, but that doesn't really make sense....
- Q Derive the Jones matrix of a liquid crystal cell?
- Q Big Ben in London is the most accurate mechanical clock of itssize. The 300-kg hour hand is 2.7 m long, and the 100-kg minutehand is 4.2 m long. Treat each...
- Q A 65.0 kg man is riding on a 12.5 kg bicycle. Together they havea kinetic energy of 2.80 x 10^3. If the bicycle has wheels withradii of 0.450 m, then...
- Q Calculation of half-life for alpha emission usingtime-independentSchrodinger Equation using the following followinginformation:Radionuclide: 241-Am (Z=95); Ea = 5.49 MeV; MeasuredHalf-Life~432yFollow the steps involved and show your work for each subsetquestion, not...
- Q What must be the position of an object in order that it may beseen distinctly through a +9.0 D lens placed 2.9 cm in front of aneye, the eye being...
- Q Marc drives like a maniac. His defense is always \"It’s OK, Iknow the physics of driving so I do it safely\". Marc is coming upto a horizontal turn of radius...
- Q The weight of an astronaut on Earth surface is 950 N. What isthe astronaut weight in a satellite orbiting Earth at an altitudeof 500km with a speed of 450 m/s?...
- Q 1. Discuss any ethical or practical considerations that mightarise from application of Ultraviolet light.2. How different wavelengths of the electromagnetic spectrum areapplied in real life. These might include (but are...
- Q underdetemination is the belief that every observed scientificphenomenon has alternative, mutually incompatible explanationsbecause there is never enough actually observed evidence tocompletely support any one of them. write a 2-3 page...
- Q Explain both Newton’s and Einstein’s views of gravity betweenearth and the moon. Make sure your answer is detailed andspecific.
- Q True or false? The asteroid belt is inside the Sun’s Roche limitand thus could not overcome the Sun’s tidal forces to form aplanet.True or false? The time interval when a...
- Q 1. If I=35,000 time the threshold of hearing, what is thedifference in db?2. Mathematically prove that the threshold of pain is 130db.(Mathematically prove means to show an equation and solution)3....
- Q The closest distance a book can be read from a pair of readingeyeglasses (Power = 2.06 dp) is 27.5 cm. What is the near distance?(Assume a distance between the eyeglasses...
- Q 1a) A copper wire 4.4 um in diameter and 318.9 um long has atemperature at one end of 35 °C and 32 °C at the other. Calculatethe rate of heat...
- Q A 5.61μC and a -2.04μC charge are placed 19.0cm apart. Where cana third charge be placed so that it experiences no net force?[Hint: Assume that the negative charge is 19.0cm...
- Q Two blocks, of 2.0 kg each, are attached by a string and slidedown a ramp making an angle of 50° with the horizontal. Mass ?1 hasa coefficient of kinetic friction...
- Q Consider a system of an 85.0 kg man, his 20.5-kg dog, and theearth. The gravitational potential energy of the system increasesby 1.90 103 J when the man climbs a spiral...
- Q Pressure for air and fluids can be measured and used to fly,float, blow, suck or coast according to specific laws andprinciples. Terminology can change for the same actions if usedwith...
- Q 1.DETAILSMY NOTESYou decide to suspend a 2 kg toy with a string attached to theceiling for your playful cat. Before the frisky feline starts toplay with it, find the tension...
- Q Explain the meaning of the Virial Theorem, i.e., E = −U/2, whereE is the star’s total energy while U is its potential energy.
- Q explain how free electron contribute to the number of Cv(T) ofsolid state and how to get that by experiment
- Q Q/Does rainbow has an end or starting point, and why rainbow has anarc shape and never a square?
- Q 1) Two particles with charges q1 = -6 μC and q2 = 2 μC,respectively, situated at corners of a rectangle of sides a = 10 mand b = 20 m....
- Q The fermi energy of silver is given as 5.49 eV. a) Find thedensities of electron and atom per volume. b) Find the fermivelocity of electron in silver c) The current...
- Q A 3.1 kg rod of length 5.1 m has at opposite ends point massesof 4.0 kg and 6.0 kg.a)Will the center of mass of this system be nearer to the...
- Q explain and prove the T^3 debye law
- Q Consider the time dependent HamiltonianH=H0+W(t).|φn is a basis of H0. Whent<0, the system is in one of the eigen states,|φi, of the unperturbedHamiltonian H0. At ?=0 an, a timedependent perturbationWt=Ccos(ωt)...
- Q Q 1. (25 pts) A constant pressure container is filledwith 1 kg of stainless steel and 0.5 kg of PVC (polyvinyl chloride)both at 20C and 0.25 kg of hot air...
- Q The fermi energy of silver is given as 5.49 eV. a) Findthe densities of electron and atom per volume. b) Find the fermivelocity of electron in silver c) The current...
- Q You are going up an elevator to reach the top of theStratosphere casino in Las Vegas. The elevator has a mass of 900kg. It initially starts accelerates, while moving upwards...
- Q Research and explain more about carbon and heattreatment effects on steel.
- Q Be able to explain how to find the allowed degrees of freedomfor monatomic and diatomic molecules and the relationship betweenCv and Cp5) Derive 22.17 (22.7)delta S= nR ln (Vf/Vi) (serway...
- Q explain the difference of metal, semiconductor, and isolatorbased on the structure of energy band
- Q Fusion is the process by which the sun produces energy. Oneexperimental technique for creating controlled fusion utilizes asolid-state laser that emits a wavelength of 1150 nm and canproduce a power...
- Q A person holds a ladder horizontally at its center.Treating the ladder as a uniform rod of length 3.10 m and mass8.56 kg , find the torque the person must exert...
- Q electron and hole of an intrinsic semiconductor of Germanium(Ge) each is 0.39 and 0.19 m^2/V.sa. find the concentration of the carrier and Ge conductivity at300 K if the gap energy...
- Q explain the importance of knowledge of quantitativetechniques to the ethical outcomes of quantitative research
- Q Find the all the bound state energies for the potential V = -Vo
- Q Using Archimedes's Principle. A solid, homogeneous sphere with amass of m0, a radius of r0, and a density of Ï0 is placed in acontainer of water. Initially the sphere floats...
- Q Thermodynamic questionDerive relation between saturated vapor pressure and temperature.and apply the relation to the case of water.
- Q Three long straight parallel wires are each carrying a steadycurrent I in the same direction. They are equidistant from eachother with separation d. What force per unit length does one...
- Q A) A plastic block that has a length of 0.5 m, a width of 0.26m, and a height of 0.33 m, and has a density of 670 kg/m3 floats inboth...
- Q You measured the force between two charged pith balls where thepith balls were of the same size and mass. Your assumption was thatthe charge on the balls was the same....
- Q Make a phasor diagram for an LRC circuit 5000 Hz if voltageacross LC is 4.0 V, voltage across a resistor is 9.0 V, peakcurrent is .09 A, and the phase...
- Q Describe the reduction in the spherical aberration for aplano-convex lens for the special case of collimated light(parallel light) focused down to a focal point.Which orientation of the lens gives the...
- Q Consider the matrix methode for a single thin lense, ie, makethe same assumption that we made when we developed the lensmakerformula.Use this to determine the (simple) System Matrix, A, for...
- Q AstrophysicsHow do we know which one of the two energy transport equationsto use?
- Q (a) Construct the P-V graph for the Carnot cycle operatingbetween 700 and 200 oC if isothermal expansion of watervapor occurs between 1 and 8 L/mol. Determine the relevantquantities of heat,...
- Q 3. Explain why one side of the single magnet attracted the metalsurface, but repelled the stack of magnets.4. What orientation of the magnets gives the strongest repulsionor attraction? Why do...
- Q An electron in the beam of a cathod-ray tube is accelerated by apotential difference of 2.20 kV . Then it passes through a regionof transverse magnetic field, where it moves...
- Q (a) Show that if operators have common eigenstates they willcommute.(b) Show also that the opposite is true too: if two operatorscommute they have common eigenstates.
- Q Consider three point charges arranged along the xx axis. Chargeq1q1q1 = -4.20 nCnC is located at x=x= 0.240 mm and charge q2q2q2 =2.40 nCnC is at x=x= -0.310 mm ....
- Q What are the three neutron interactions of interest in a fissileenvironment?
- Q Briefly explain the quantization of the rotational kinetic energy in two dimensions with a figure.And explain what it means to rotate electrons in a hydrogen atom.
- Q Describe how a mechanical wave reflects off of differentsurfaces. Explain why reflection is different for a loose end vs afixed endDescribe what happens to the displacement of the string when...
- Q A 1410-kg car moving east at 17.0 m/s collides with a 1880-kgcar moving south at 15.0 m/s, and the two cars connecttogether.a) What is the magnitude of the velocity of...
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