Physics question and answers for October 05, 2023
- Q How can l write a lab report on the specific latent heat ofice?(electric method)
- Q You cannot make the earth's magnetic field disappear,so while performing magnetic field mappings can the earth's fieldimpact my results? if any at all?In Mapping magnetic fields where are they the...
- Q 1)The speed of light in a certain substance is 77.28-% of itsvalue in crown glass. What is the index of refraction of thatsubstance?2)The speed of light in a certain substance...
- Q At our distance from the Sun, the intensity of solar radiationis 1370 W/m^2. As discussed in class and in the textbook, thetemperature of the Earth is affected by the greenhouse...
- Q Why can or cannot perfectly elastic collisions ever occur innature??
- Q Two point charges, A and B. Charge A is located at the originand Charge B is on the x axis at x=40.0 cm.a) Let the charge of A is +3Q...
- Q 1. The second order fringe when 700 nm light falls on a doubleslit isobserved at a 15° angle to the initial beam direction. How farapart arethe slits? Ans: 5.41 x...
- Q A billiard ball is shot east at 2.80 m/s. A second, identicalbilliard ball is shot west at 1.20 m/s. The balls has a glancingcollision, not a head-on-collision, deflecting the second...
- Q A box of mass ?=20.5 kg is pulled up a ramp that is inclined atan angle ?=19.0∘ angle with respect to the horizontal. Thecoefficient of kinetic friction between the box...
- 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 An electron of kinetic en-ergy 1.20 keV circles in a plane per-pendicular to a uniform magneticfield. The orbit radius is 32.7 cm. Find(a) the electron’s speed, (b) the magnetic field...
- Q Consider a bicycle wheel, radius ? with rim of mass ? and axleof mass ?. The masses of the wheel’s thin spokes are so small thatwe will neglect them. Initially,...
- Q What is angular momentum?
- Q In detail, explain what role magnetism play in the 'Charge toMass ratio of an electron' experiment performed by J.J.Thomson?How can magnetism alter the expected results?Why is it important for the...
- Q A uniform 45 kg beam that is 4.35 m in length sticks out from avertical wall. A lightweight cable connects the end of the beam tothe wall, making an angle...
- Q A thin film of oil (n = 1.28) is located on smooth, wetpavement. When viewed from a direction perpendicular to thepavement, the film reflects most strongly red light at 640...
- Q I know that the type 1A Supernova stars are ideal to measuredistances and to prove that the universe is accelerating.They are standard candles type of stars. Their luminosity willdecline after...
- Q In warehouses, boxes get lifted up and down a lot, which isusually done by a forklift. A forklift has a maximum load it canhandle so you need to know the...
- Q 1) Suppose after charging a 5.8
- Q Discuss evidence of craters on Earth. you may discuss any othercraters that we know of on Earth. You could also discuss the issueof craters on Earth in general.
- Q A fan is designed to last for a certain time before it will haveto be replaced (planned obsolescence). The fan only has one speed(at a maximum of 650 rpm), and...
- Q Solve the following ordinary differential equations byseparating variables and integration.1. y'sinx=ylny, the boundary condition (b.c.) is that the functionpasses through (y=e,x=pi/3)2. y'+2xy2=0, b.c. (y=1;x=2)3. y'-xy=x, b.c. (y=1;x=0)
- Q Why dothe laws of physics exist?Whydoes nature behave the way it does?Why isthere a connection between math and nature?Science can tell us a lot about how nature works, but it...
- Q What is the difference between induction and charging byconduction?
- Q A negative charge of –40nC exerts an attractive force of 12N ona second charge that is 0.050m away. What is the second charge?
- Q A charge of uniform linear density 2.20 nC/m is distributedalong a long, thin, nonconducting rod. The rod is coaxial with along conducting cylindrical shell (inner radius = 4.00 cm, outerradius...
- Q Coherent electromagnetic waves with wavelength λ=500nm passthrough two identical slits. The width of each slit is aa, and thedistance between the centers of the slits is d=9.00mm.a.What is the smallest...
- Q When you take a bath, how many kilograms of hot water (47.3 °C)must you mix with cold water (13.3 °C) so that the temperature ofthe bath is 36.0 °C? The...
- Q If you were conducting the wire/compass experiment (Part A) nearthe equator instead of in Oregon, would it be necessary to use moreor less wire current to cause the compass needle...
- Q What occurs on Dec. 21, March 21, June 21, and Sept. 21? Whatspecific names are given to these dates?Distinguish between the milky way and The Milky Way.Every star (including the...
- Q Using a crowbar, a person can remove a nail by exerting littleforce, whereas pulling directly on the nail requires a large forceto remove it (you probably can't). Why? Using a...
- Q In the formula A(t)=A0e^kt, A is the amount of radioactivematerial remaining from an initial amount A0 at a given time t, andk is a negative constant determined by the nature...
- Q A 57.40-pF cylindrical capacitor carries a charge of 1.740µC. The capacitor has a length of 1.400 ✕ 10−3m.(a) What is the potential difference across the capacitor?V(b) If the radial separation...
- Q A 50-kg block rests on a horizontal surface. The coefficient ofstatic friction u(s) = 0.50. The coefficient of kinetic frictionu(k) = 0.35. A force of 250 N is applied as...
- Q A macro lens isdesigned to take very close-range photographs of small objects suchas insects and flowers. At its closest focusing distance, a certainmacro lens has a focal length of 33.0...
- Q 3) The momentum eigenfunction for a particle moving in onedimension is Ñ„Ñ€--h-1/2eipz/n The energy eigenfunction for aparticle in a 1D box of length L is u()- is expanded in terms...
- Q A magnetic field is perpendicular to the plane of a single-turncircular coil. The magnitude of the field is changing, so that anemf of 0.25 V and a current of 2.5...
- Q A small He-Ne laser produces a 632.8 nm beam with an averagepower of 3.5 mW and diameter of 2.4mma) How many photons per second are emitted by the laser?b) What...
- Q A 1150 kg car drives up a hill that is 15.7 m high. During thedrive, two nonconservative forces do work on the car: (i) the forceof friction, and (ii) the...
- Q Which method(s) of energy transfer does not require matter?Which method(s) of energy transfer does require matter? Give anexample of each
- Q A monatomic ideal gas expands slowly to twice its originalvolume, doing 430 J of work in the process.A) Find the change in internal energy of the gas if the processis...
- Q the spacecraft Discovery 1 has gotten too close to a black hole!The ship has a large rear section containing the nuclear engines,with a mass of 3,000 kg; a front section...
- Q what is the relationship between Mechanical advantage and gearratios?
- Q A particle with a charge of -60.0 nC is placed at the center ofa non-conducting spherical shell of inner radius 20.0 cm and outerradius 25.0 cm. The spherical shell carries...
- Q In a nuclear fission reactor, each fission of a uranium nucleusis accompanied by the emission of one or more highspeed neutrons,which travel through the surrounding material. If one of theseneutrons...
- Q A mass is placed on a frictionless, horizontal table. A spring (k = 185 k=185 N/m), which can be stretched or compressed, is placedon the table. A 4.5-kg mass is...
- Q A transverse sinusoidal wave is generated at one end of a long,horizontal string by a bar that moves up and down through adistance of 1.7 cm. The motion is continuous...
- Q B) A 1300 -kg car is pushing an out-of-gear2200 -kgtruck that has a dead battery. When the driver steps on theaccelerator, the drive wheels of the car push horizontally againstthe...
- Q A.)In the lab, you will determine a value for the time constant ofthe RC circuit, by measuring the amount of time it takes thecapacitor voltage to increase from 0.0 V...
- Q A microscope has an object lens f=11 mm and an eyepiece lensf=22 mm separated by 122 mm. Where is the image of the eyepiecelocated? What is the magnification?
- Q Can you give 2 othere examples of a diagnosticradiopharmaceutical, there uses and desirable radiological andbiological properties.e.g - sodium pertechetiate 99m (please don't pick this oneagain);
- Q Under electrostatic condition electric charge Q = 17.7x10-9 C isuniformly distributed on the surface of an isolated conductingsphere of radius R = 3 m. There is no other charge around....
- Q The temperature in Winterberg is a sinusoidal function in time.120 days ago, the temperature was at its maximum value of 55â—¦F. Thetempearture has been falling since then, and 20 days...
- Q A positive charge q is fixed at the pointx=0,y=0 and a negative charge -2q isfixed at the point x=a,y=0.Part A:Derive an expression for the potential V at points onthe y-axis...
- Q Simulation : Ideal Gas LawsObjective:1. Demonstrate the relationship between pressure, temperature,and volume for the ideal gas.Equipment:phET Simulation :http://phet.colorado.edu/en/simulation/gas-propertiesBefore you begin note the following notes andtips:You will use 200 units of...
- Q A parallel plate capacitor with plate separation d is connectedto a battery. The capacitor is fully charged to Q Coulombs and avoltage of V. (C is the capacitance and U...
- Q We did an experiment : determination of entropy changes duringmelting of ice in a closed system. Can you write a 400 wordsparagraph introduction about The Second Law of Thermodynamics,entropy, entropy...
- Q Derive the energies for an infinite square wellpotential. Start from the Schrödinger Equation and show yourwork.Please show all the work and steps and themath indetails.similar problem will be on my...
- Q In forensic science, it is useful to measure the speed at whichfirearms propel bullets. Before modern instruments, this was donewith a device called a “ballistic pendulumâ€, consisting of a blockof...
- Q The 6h 20 min between low and high tide is caused by what?The 7 days between very large to mild CHANGES in tides iscaused by what?We see very large tide...
- Q Design a \"bungee jump\" apparatus for adults. A bungee jumperfalls from a high platform with two elastic cords tied to theankles. The jumper falls freely for a while, with the...
- Q The temperature right above the lake was 5°C, Your Grandpa saidthe lake wont crack, it is 65 feet deep and the temperature at thebottom of the lake is 20°C and...
- Q A husband and wife take turns pulling their child in a wagonalong a horizontal sidewalk. Each exerts a constant force and pullsthe wagon through the same displacement. They do the...
- Q (a)Find the frequencies of the fundamental, 1st and 2nd overtonesof a 1.00m wire whose wave speed is 200m/s. (b) Find thewavelengths of the sound waves created by the vibrating wire...
- Q A block is projected up a frictionless inclined plane withinitial speed v0 = 3.48 m/s. The angle ofincline is θ = 32.7°.(a) How far up the plane does the block...
- Q Charge Q is uniformly distributed along a thin, flexible rod.The rod is then bent into a semicircle of radius R.Find an expression for the electric potential atthe center of the...
- Q A proton with rest mass (.998GeV/c2) is moving withtotal energy E = 3GeV . What are its momentumand its speed?
- Q 1. Ryan is readying for a face-off at the begninning of a hockeygame. What is the total Force that ryan exerts on the ice? What isthe total force of the...
- Q 2). A particle moving on the x-axis has a time-dependentposition (t) given by the equation x (t) = ct - bt^3. Where theunits of x are meters (m) and time...
- Q A 105‑turn circular coil of radius 2.41 cm and negligibleresistance is immersed in a uniform magnetic field that isperpendicular to the plane of the coil. The coil is connected to...
- Q Answer all parts. Write big, clear and legibly.  A 0.10kg dart is fired horizontally at the center of a 0.80kgvertically hanging block, sticking to it. The system reaches amaximum height, h,...
- Q An object is placed 18 cm in front of a converging lens that hasa 12 cm focal length. Use ray tracing to determine themagnification of the image.
- Q A stiff wire 44.5 cm long is bent at a right angle in themiddle. One section lies along the z axis and the other is alongthe line y=2x in the...
- Q You and your crew must dock your 2.55 × 104 kgspaceship at Spaceport Alpha, which is orbiting Mars. In theprocess, Alpha’s control tower has requested that you ram anothervessel, a...
- Q A solenoid of radius 3.5 cm has 800 turns and a length of 25cm.(a) Find its inductance.mH(b) Find the rate at which current must change through it toproduce an emf...
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