Physics question and answers for August 05, 2023
- Q how does the x-ray circuit influence the production of xrays
- Q 4.22 mode-locked laser (a)consider a He-Ne laser emitting at632.8nm, and mode-locked. the tube length is 50cm. the spectralwith of the optical gain curve is 1.5 GHz Find the mode-lockedpulse width...
- Q 2. Critique the following carbon mitigation wedge plan from theperspective of developing nations. Is this friendly to the growthof these nations? Make sure you completely dissect the plan withrespect to...
- Q Describe the components of Hyper-V and the process forinstalling it.
- Q Mosquitoes are able to find a person’s vein in three stages; ata range of 50 meters the mosquito detects a CO2 plume due tobreath, at 10 meters the mosquito is...
- Q A plane-parallel monoenergetic beam of 1O^I2 uncharged particlesper secondis incident perpendicularly on a layer of material 0.02 m thick,having a densityp = 11.3 X lo^3 kg/m3. For values of the...
- Q When violet light and yellow light shine on a metal surface,only one color produces an electric current. Write 3 - 4 sentencesdescribing the effect of each light on the metal....
- Q 1) Identical twins Anna and Hannah visit you at the opticalclinic. Anna, whose eyes can easily focus on distant objects (herfar point), is also able to focus on objects within...
- Q You have constructed a 5-kg toy iceboat which you set on africtionless frozen pond when a sudden wind exerts a constant forceon the boat of 100 N due west. Due...
- Q explain the following:a. what is lattice, basis, and crystal? explain the differenceof themb. bravais lattice and non bravais? explain and give examplec. primitive vactors?d. brillouine zone? why we must study...
- Q There is a tree in the middle of your front yard and you takepictures of a squirrel as it runs around the tree. When you takethe first picture, the squirrel...
- Q 1- what is the relationship between integrity and necessity ofenforcement ?2- what is the relationship between external auditing andwindow-dressing?3- At what stage in the design process should prototyping takeplace? why...
- Q Check all the correct statements.The internal energy of an ideal gas (those that obey PV = nRT)depends only the temperature of the system.The internal energy of any gas depends only...
- Q A particle of mass m moves under the influence of gravity g onthe inner surface of a smooth cone of half-angle α. The axis of thecone is vertical, with its...
- Q a) In the wave picture of light, what determines the followingproperties? i. Color of the light ii. Brightness/intensity of thelight iii. Energy of the lightb) In the photon picture of...
- Q 1. Think about the forces acting on a train engine and the traincars that it pulls.a.) Draw a force diagram for the 5 forces (one of the forces isfriction) acting...
- Q a) Draw the energy levels (including the Fermi levels) of anon-degenerate p-n junction with a reverse bias of Vr. Draw thehole and electron concentrations as well. b) If this pn...
- Q A car of mass M and a small truck of mass 3Mare travelling along two roads perpendicular to each other asshown.The car and the truck collide at the intersection atO.The...
- Q Show by direct computation that the impulse momentum theorem andthe work-energy theorem are invariant under the Galileantransformation.
- Q Astronomers have discovered a new planet around a nearbySun-like star. The following data on the planet is known. It has adensity of 1.4 relative to water along with a mass...
- Q You (mass 81 kg) and your friend (mass unknown) are in a rowboat(mass 65 kg) on a calm lake. You are at the center of the boatrowing and she is...
- Q ----Modern Physics question: Please be thorough with yourexplanation.Using the Internet, find the location of a particle accelerator.In several paragraphs describe its size, what particles are beingaccelerated, how they are being...
- Q Two colors of light, green and yellow, undergoes diffractionthrough the same diffraction grating. Which color of light seesgreater diffraction angle?Both colors undergo the same diffraction angle.GreenYellowWe will measure the spectra...
- Q A block of mass M = 4.0kg is released fromrest at point A as shown. Part AB of the track isfrictionless and is one quarter of a circle of radiusR=1.25m....
- Q physics 211:a block is placed on an adjustable ramp and then the tilt of theramp is increased slowly until the block begins to slide. whyexactly does the block refuse to...
- Q Venus is known for its very high surface temperatures, caused bya huge greenhouse gas effect. However, atmospheric density, surfacetemperature and surface pressure are also very different fromEarth’s due to a...
- Q The magnetic force acting on a moving electric charge is foundto be independent of the sign of the charge.TrueFalseWe place the N magnetic pole of a magnet near the N...
- Q A small object with mass m, charge q, and initial speed v0 =6.00×103 m/s is projected into a uniform electric fieldbetween two parallel metal plates of length 26.0 cm (Figure...
- Q Briefly describe three different sound processing schemes usedto modify received sound signals before they are sent to a cochlearimplant.Please just list the three and a small description of each,thanks!
- Q For any multimedia applications, describe how Quality of Service(QoS) guarantees for available bandwidth, delay, jitter and lossrate with DiffServ and IntServ? Highlight the issues with suitablediagrams.
- Q In an AC to DC rectifier circuit, the output DC signal of therectified wave was measured to beVDC= (6.6±0.6)V and its ripple voltage was measured tobe Vripple=(0.27±0.02) mV. What is...
- Q Ice cubes usually float in a glass of water. If you push the icecubes down to the bottom of the glass (using a straw), would theycool the water more, or...
- Q A rubber bullet is shot with a speed of 130 meters per secondwith an angle 67.4 degrees above the horizontal. The ground is 115meters above from where the rubber bullet...
- Q Compute the average of x and x^2 and determine ∆x for the groundstate of the harmonic oscillator. b) Determine the averagepotential energy and describe how it is related to the...
- Q According to alignment of rods, how can you know what kind ofbars are made? Explain by investigating alignment of moments andnet magnetization.
- Q an owl m=4.72kg slides down a semi-circular rampr=7.5m. the owl starts at the top ramp at rest. when the owl is atan angle 31.9. what is the normal force exerted...
- Q 1) What type of air pollution exists in the cabins ofairplanes?2) Make a list of the pollutants and their possible healtheffects. How do these pollutants affect the biology ofrespiration?3) How...
- Q For both resistances, plot the charge curve ofln(1-V/V0) vs. time. From the slope of the line, calculate the C(capacity). Please write your answer as large and neatly aspossible.ChargeR=10,000R = 5,000Voltage...
- Q Working on the Millikan Oil Drop experiment:when working on the lab one of the key challanges was toselect proper oil drops. If the oil drops are too large, theiruniform falling...
- Q Special Relativity: Consider a firecracker that after beingtriggered explodes after 1 second. An observer A is standing somedistance away from observer B who is traveling with constantvelocity towards A with...
- Q Describe the development of the quantum model of electromagneticradiation
- Q What is the hamiltonian of a system? (and please don’t say itsteh total energy because its only the total energy when it’s timeindependent.What is the difference between the momonetum P...
- Q A snake of proper length 100 cm is moving at speed v = 0.6c tothe right across the table. A mischievous boy, wishing to tease thesnake, holds two hatchets 100...
- Q Estimate the thickness of a CdSe quantum dot film needed toabsorb 90% of the incident light.
- Q 1. The following questions relate to the followingscenario.A student is listing possible factors that determine thechange in the kinetic energy of objects. She has collected data inthe following experimental setup:Two...
- Q Explain the apparent contradiction between the Principle ofLocal Equivalence and the principle of mass independenceestablished by Galileo. Then resolve this in terms of Einstein'svectorial acceleration.
- Q sinusoidal wave of angular frequency 1205 rad/s and amplitude3.20 mm is sent along a cord with linear density 2.10 g/m andtension 1233 N. (a) What is the average rate atwhich...
- Q The Nile River runs from east to west. Assume the water in theNile is electrically neutral while still conducting, and that theions (both positive and negative in equal concentration) arecarried...
- Q You throw a rock at time t=2 s at an angle of theta=-2 degreeswith a speed of v=24 m/s from a high cliff. Calculate the speed ofthe ball at the...
- Q howdoes the newtons ring work?
- Q 3. (a) An outfielder fields a baseball 280 ft away from homeplate and throws it directly to the catcher with an initialvelocity of 100 ft/s. Assume that the velocity v(t)...
- Q A bullet with a mass m b = 11.5 g is fired into a block of woodat velocity v b = 265 m/s. The block is attached to a spring...
- Q A point charge q2 = -1.9 μC is fixed at the origin of aco-ordinate system as shown. Another point charge q1 = 4.5 μC is isinitially located at point P,...
- Q a) An electron with 10.0 eV kinetic energy hits a 10.1 eVpotential energy barrier. Calculate the penetration depth.b) A 10.0 eV proton encountering a 10.1 eV potential energybarrier has a...
- Q 1.a)What is corona discharge?b)Why engineers avoid sharp extensions in high voltagewires?c)What is a capacitor and capacitance?d)What is capacitor good for?
- Q For the definitions please include the equations to:A:Give a definition of the torque as a vector. Briefly describetorque.B: Give a definition of the angular acceleration. Brieflydescribe angular acceleration.C: Give a...
- Q City A is located 40° N, 10° W. City B is located 40° N, 20° E.Assume the Earth is a perfect sphere with a radius of 6371km.Calculate the short distance...
- Q The coefficients of static and kinetic friction between a 50kilogram box and a horizontal surface are 0.60 and 0.40,respectively. (a) What is the acceleration of the object if a 250newton...
- Q Assume a satellite communication system based upon a highlyelliptical polar orbit approximately centered over the AtlanticOcean. Communication is to be maintained between a U.S. station andone in the United Kingdom....
- Q A ball is released from the top of the building and reaches theground after 5 seconds (15 points). a) What is the velocity of theball when it hits the ground?...
- Q At a distance of 60.0km from a radio station antenna theelectric-field amplitude is 8.70�10?2V/mPart BAssuming that the antenna radiates equally in all directions(which is probably not the case), what is...
- Q At the equator, the earth’s field is essentially horizontal;near the north pole, it is nearly vertical. In between, the anglevaries. As you move farther north, the dip angle, the angle...
- Q A potter is making a spherical vase on a potter’s wheel. Thevase has a mass of 0.8 kg and a radius of 4.0 cm and the potter’swheel has a mass...
- Q 6. Use the periodic chart to fill in all the missing items so asto make the nuclear decays complete. I.e., specify completely (i.e.including subscripts and superscripts) Z and X in...
- Q (a)A cosmic ray proton streaks through the lab with velocity0.82c at an angle of 52° with the +x direction (in the xy plane ofthe lab). Compute the magnitude and direction...
- Q A computer-controlled racecar is programmed to execute thefollowing motion along the ground for 6.0 seconds. Let’s say thecar begins at the origin of our coordinate system. Its initialvelocity is ~v0...
- Q 8) A pendulum of mass m hangs from a support fixed to atrolley. Find the direction of the string of the pendulum, i.e. itsangle a with the vertical, and its...
- Q Two stars of equal mass orbit one another. (This is called abinary star system.) If the stars’ orbits have a semimajor axis of2.5x10^8 km and complete one orbit every 2.4...
- Q Inez is putting up decorations for her sister's quinceanera(fifteenth birthday party). She ties three light silk ribbonstogether to the top of a gateway and hangs from each ribbon arubber balloon....
- Q A neutron in a nuclear reactor makes an elastic, head-oncollision with the nucleus of a carbon atom initially at rest.(a) What fraction of the neutron's kinetic energy is transferredto the...
- Q A geosynchronous orbit is one in which the satellite orbitsabove the equator and has an orbital period of 24 hours so that itis always above the same point on the...
- Q A block with mass m = 17.2 kg slides down an inclined plane ofslope angle 13.8o with a constant velocity. It is thenprojected up the same plane with an initial...
- Q a. A child is sitting on the outer edge of a merry-go-round thatis 3.19 m in diameter. If the merry-go-round makes 8.9 rev/min,what is the velocity of the child in...
- Q Acar carrying a suspicious amount of nitroglycerin in its trunk isrear-ended by another car. When they collide, the nitroglycerin inthe first car explodes.You are provided with dynamics carts (including one...
- Q 1. In a high temperature experiment an ozone molecule, O3,moving right at 1.5 × 103 m/s, collides head-on with an oxygenmolecule, O2, which is moving to the left at 400...
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