Physics question and answers for September 01, 2023
- Q Find the total energy associated with the earths currentrotation and compare this to the gain in the moons orbital energy.What fraction of the energy has been lost as heat?
- Q How many inhabitable planets are there in the universe? Twoestimates are given by Drake's Equation and Seager's Equation. Do alittle research on Drake's Equation and Seagar's Equation.Summarize what you've found....
- Q The figure shows a cut-away drawing of a thermos bottle (alsoknown as a Dewar flask), which is a device designed specifically toslow down all forms of heat transfer. Explain the...
- Q A car’s initial velocity is 50.0 km/h in the direction 60.0°north of east, and its final velocity is 70.0 km/h in the direction40.0° south of east. If the time period...
- Q The magnetic field perpendicular to a circular wire loop 7.7cmcm in diameter is changed from +0.44 TT to -0.27 TT in 150 msms ,where + means the field points away...
- Q 1) While a lawnmower moves forward 2 meters, a man pulls on the handle of thelawnmower with a force of 100 Newtons. The angle between thedisplacement of the lawn mower...
- Q Four identical masses of 2.6 kg each are located at the cornersof a square with 1.2 m sides. What is the net force on any one ofthe masses?? ?? N...
- Q The answer and solutions are not given. Solve everything from athrough f.  An automobile takes 9.89 seconds to accelerate from rest to 60miles per hour. a) Find the automobile's acceleration (assumingthat...
- Q A subway train starts from rest at a station and accelerates ata rate of 2.00 m/s2 for 14.0 s. It runs at constant speed for 66.0s and slows down at...
- Q Two satellites are in circular orbits around the earth. Theorbit for satellite A is at a height of 555 km above the earth’ssurface, while that for satellite B is at...
- Q Water flows vertically out of a circular faucet that has adiamter d=0.050m, height = 0.55m, speed after falling that height =3.58 m/s.What is the volume of water that exits the...
- Q Describe the differences between circular motions and ellipticalmotions. Explain how Newton’s universal gravitational law can beapplied to study the interplanetary motions.
- Q Why is it that when you put something metal in the microwave,you get a firework display, and yet the inside of the microwave ismade out of metal?
- Q what would the kvl be if -330i1-470i2-860i2+9=0 and-6-12-560i3-860i2+9=0 and -330i1-470i1+560i3+12+6=0 andi2=i1+i3.find i1, i2, i3.
- Q Waves travel at different velocity in different medium. How doeswave velocity effect wave frequency?
- Q a ray of yellow light crosses the boundary between glass andair, going from glass to air. If the angle of incidence is 30degrees, what is the angle of refraction
- Q How did shortening the length of the spring affect the resonantfrequencies? How does this confirm the relationship v = ? f whenvelocity is constant? And how musical instruments create higher...
- Q A ball is kicked horizontally with 15 m/s initial speed from acliff. The ball lands 75 m away from the base of the cliff (R =75m). What is the height...
- Q Two charges of opposite sign and equal magnitude Q = 2.0 C areheld 2.0 m apart. Determine the magnitude and direction of theelectric field at the point P.
- Q Determine the number of photons with wavelengths between 705 and713 nm escaping each second from a small opening in a cavity at atemperature of 9000 K. The opening behaves like...
- Q Briefly describe how the formation of the following elementsoccurs in stars. What type of star is needed for the formation ofeach group of elements?a) Heliumb) Carbonc) Oxygen, Neon, andIrond) Tin...
- Q A 2.90-kg ball, moving to the right at a velocity of +1.53 m/son a frictionless table, collides head-on with a stationary 6.20-kgball. Find the final velocities of (a) the 2.90-kg...
- Q A car travels at 105 km/h on a level road in the positivedirection of an x axis. Each tire has a diameter of 63.6cm. Relative to a woman riding in...
- Q #2a.Three point charges are located in the x-y plane. q1 = -42.6nC at (0.00, +3.60 cm), q2 = +45.4 nC at (-6.80 cm, 0.00) and q3 =-28.4 nC at (+8.20...
- Q A uniform magnetic field exerts a force on a moving charge whichis equal to the charge times the vector product of the velocity andthe magnetic field. Can this force change...
- Q Suppose you do a Fourier analysis of the sounds from a trumpet anda guitar, each playing the same note. What would be the same in thetwo analyses and what would...
- Q A 0.158 kg toy is undergoing SHM on the end of a horizontalspring with force constant 310 N/m . When the object is1.50×10−2 m from its equilibrium position, it isobserved...
- Q A block of mass m1 =2.00 kg and a block ofmassm2 = 6.00 kg areconnected by a masslessstring over a pulley in the shape of asolid disk having radiusR =...
- Q A solid cylinder (radius = 0.190 m, height = 0.190 m) has a massof 21.4 kg. This cylinder is floating in water. Then oil (Ï = 867kg/m3) is poured on...
- Q A0.507-mol sample of an ideal diatomic gas at 393 kPa and 286 Kexpands quasi-statically until the pressure decreases to 147 kPa.Find the final temperature and volume of the gas, the...
- Q A block with mass m =6.5 kg is hung from a vertical spring. Whenthe mass hangs in equilibrium, the spring stretches x = 0.22 m.While at this equilibrium position, the...
- Q many real charge distributions can be approximated by the simpledistributions considered in this chapter. Sketch and estimate thedependence of electric field for these charge distributionsa)dipole b)point charge c)line charge and...
- Q detailed solutions/equations for both***Part 1Five electrons are in a two-dimensional square potential energywell with sides of length L.The potential energy is infinite at thesides and zero inside. The single particle...
- Q A mass m = 17 kg is pulled along a horizontal floor, with acoefficient of kinetic friction ?k = 0.06, for a distance d = 6.7m. Then the mass is...
- Q Water movinng in a horizontal pipe has a velocity of 9.0 m/swhen the radius of the pipe is 0.0025 metr. determine the velocityof the water when it enters a wider...
- Q A 4.00 −kg ball is dropped from a height of 14.0 m above one endof a uniform bar that pivots at its center. The bar has mass 5.50kg and is...
- Q Consider a mass spring system. The spring has a constant k=30N/mand mass=3kg. The mass oscillates w/amplitude of 10cm. a.)what isthe frequency of oscillation b.) what is the displacement at timet=0...
- Q A wood cube 0.40 m on each side has a density of 750 kg/m³ Whatmass has to be placed on top of the wood so that its top is just...
- Q How do you do this? How do you set it up?One mole of a ideal gas initially at temp To=0C undergoes anexpansion at a constant pressure of 1atm to four...
- Q What is the energy of a typical visible photon? How many photonsenter the eye pre second when one looks at a weak source of lightsuch as the moon who's intensity...
- Q A certain microscope consists of an objective lens, (Lens 1),and a tube lens (Lens 2). The object is placed at the front focalplane of the objective lens and the image...
- Q Two stationary positive point charges, charge 1 of magnitude3.45nCand charge 2 of magnitude 1.80nC, are separated by a distance of 40.0cm. An electron is released from rest at the point...
- Q Consider three point charges at the corners of an equilateraltriangle, its base sitting on the x-axis, with charge qA positionedat the origin, qB is at x=+3.50 cm, and qC is...
- Q A uniform cylinder of radius R and mass M ismounted so as to rotate freely about a horizontal axis that isparallel to, and a distance h from the centrallongitudinal axis...
- Q How does an electron microscope work? Please explain indetail.
- Q Jack (mass 56.0 kg) is sliding due east with speed 8.00 m/s onthe surface of a frozen pond. He collides with Jill (mass 44.0 kg), who is initially at rest....
- Q Pre-Lab Questions1.  How are electric potential and electric fieldsimilar? How are they different?2.  Draw the equipotential lines for a single, positive,charge.3.  If you were to walk on an equipotential line,...
- Q So I know that two particles can be entangled in a quantum way,but is it possible that more than two particles be entangled in aquantum way? Most descriptions provide with...
- Q 1. How can a neutral item be attracted to a charged object?Devise a test that will tell you whether the ball was neutral orpositive. You can use any tools, even...
- Q a) Explain with quantification the terms ‘thermal’ and ‘fast’ todescribe neutrons.b) Describe fully three important neutron interactions in a thermalnuclear power reactor.c) Describe the range of materials in which these...
- Q How have the abundance of H and He in the universe changed sincethe big bang? Why or why not?
- Q What is meant by self consistency ? can you give any real lifeexample or example from physics to explain self consistency ?
- Q An isolated parallel-plate capacitor (not connected to abattery) has a charge of Q = 2.4×10−5C. The separation between theplates initially is d = 1.2 mm, and for this separation thecapacitance...
- Q A crate with mass 27.0kg initially at rest on a warehouse flooris acted on by a net horizontal force of 126N .Part AWhat acceleration is produced?a =Â Â m/s2Â Â SubmitMy AnswersGiveUpPart BHow far...
- Q 1. a) The star μ Cephei has an apparent magnitude of +4.73 inthe V-band. How many times brighter is its apparent brightness inthe V-band than in the B-band if its...
- Q You are the manager of a 40 head broodmare farm. The mare’saverage weight is 1,000 lbs. ➢ You know the mares in earlylactation require: 28.3 Mcal DE, 3 lbs Crude...
- Q Historical background for electricity and magnetismExplain what each of the following materials are and how theyare related to electrostatics or magnetism.Amber:Lodestone:Explain the following theories.Effluvium Theory:Benjamin Franklin’s One Fluid TheoryDufay’s Two...
- Q An iron wire has a cross-sectional area of 5.70 ✕ 10−6 m2. Carryout steps (a) through (e) to compute the drift speed of theconduction electrons in the wire.(a) How many...
- Q A 70.0-kg grindstone is a solid disk 0.530m in diameter. Youpress an ax down on the rim with a normal force of 160N(Figure 1) . Thecoefficient of kinetic friction between...
- Q Electrical power is transmitted southwards from a hydroelectricplant over a distance of 1000 km via a DC (direct current)transmission line to a consumer. The output is 800 KV at the...
- Q Time standards are now based on atomic clocks. A promisingsecond standard is based on pulsars, which are rotatingneutron stars (highly compact stars consisting only of neutrons).Some rotate at a rate...
- Q PLEASE CLEARLY ANSWER ALL 3 PARTS:3. Using at least one of Einstein's \"thought-experiments\",explain how special relativity addresses how it is possible forobservers in two different inertial reference frames to “disagreeâ€about...
- Q Calculate the average energy U(T) and entropy S(T) of aparamagnet with two energy states ±μH in the presence of magneticfield H. Take the limits of high and low temperature and...
- Q You cool a 130.0 g slug of red-hot iron (temperature 745 ?C) bydropping it into an insulated cup of negligible mass containing75.0 gof water at 20.0 ?C. Assume no heat...
- Q In your own words:(i) Use the Huygens principle to explain how plane parallelwavefronts are diffracted at a single aperture.(ii) Use the principle of superposition to explain how coherentlight emerging from...
- Q You are working as an assistant to your cousin, who is anarchitect. She is currently designing the lobby for a new luxuryhotel. The lobby will include a walkway suspended above...
- Q Briefly describe the three nuclear energy production methodsin stars, making sure to give the inputs (fuels) and products ofeach process.How is the end of a high mass star's life different...
- Q Is this email good?? ( I mean grammatically andacademy)To Whom It MayConcernI have known Mr.George since he joined us in ‎2011. We worked together in thenational center Applied Physics. I...
- Q What is the difference between semiclassical probabilitydensity and classical probability density?Note: This is for a quantum physics 2 course.
- Q The drawing shows a collision between two pucks on an air-hockeytable. Puck A has a mass of 0.22 kg and is moving along the x axiswith a velocity of 5.80...
- Q You are to design a thin lens for eyeglasses that will have afocal length of 10 cm. You only have tools that will allow you toshape glass surfaces with the...
- Q A 43.0 g ball is fired horizontally with initial speedv0toward a 107 g ball that is hanging motionless from a1.2 m -long string. The balls undergo a head-on, perfectly elasticcollision,...
- Q what are the pros of using traditional value stream mapping(VSM) in going from a current state of \"push\" contol to re-designof a \"future\" state \"pull\" process and how does it...
- Q A transmission wire oriented parallel to the x-axis carries acurrent of   200 A  flowing along the +xdirection. A second transmission wire also oriented parallel to thex-axis but lying at a...
- Q what essential contruction design is needed to recieve anincomming horizontal EM wave if the reciever is built forinterpreting changes in the electric field? what if it was built torecieve the...
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