Physics question and answers for July 20, 2023
- Q Effect of intensity on photoelectronsWhat effect does changing the light intensity have on themaximum energy of the photoelectrons and what evidence supportsyour answer?What effect does changing the light intensity have...
- Q 1. Assume that in the process of throwing a baseball pitch, thebaseball leaves the hand of the pitcher 6 vertical feet above and60 horizontal feet from home plate. Also assume...
- Q The cutter bars of two combine harvesters from differentmanufactures develop different failure types with time. Cutter barA loses the knife sharpening after 10 seasons, while cutter bar Bdoes not lose...
- Q A glass thermometer (m = 13.0 g) is placed into a 110 g cupfilled with 220 g of water. These objects have an initialtemperature of 28°C. Pieces of ice with...
- Q What is electromagnetic induction and what are itsapplications?
- Q This is a Lab Report about an experiment.The experiment should be about HEAT and TEMPERATURE with anyexample.Title:Hypothesis: Statement that the experiment isgoing to test, prove, or disprove. What is the...
- Q Provide an electron configuration for each ion that participates inthe making of sodium chloride. Explain what kind of bonding that isusing electronegativity.
- Q what are the relative positions of the Earth, the Sun, and the Moonduring a Solar eclispe?
- Q The potential barrier is defined by V(x) =((A^2-(x^2)*(b^2))^0.5Â Â where x is less than or equal toA/b.First we want to sketch V(x)Then we run a particle into it wth mass m and...
- Q Electromagnetic wave problemTE modes=Transverse Electric ModesTM modes=Transverse Magnetic Modesproblem:Consider a long straight hollow cylindrical metal tube with aninner diameter R.Find possible Transverse Electric Modes(TE modes) and TransverseMagnetic Modes(TM modes) that...
- Q In a two-page paper, identify the physics principles containedwithin the following scenario. Explain how these principals connectto Einstein's theory of relativity or in modern applications inphysics. If you use a...
- Q A capacitor is fully charged and then connected in series to aninductor with zero resistance wires. This is an ideal L-C circuitthat will oscillate the current direction. Explain HOW and...
- Q Consider a long straight hollow cylindrical metal tubewith an inner diameter of R. The possible TE modes and TM modes forelectromagnetic waves to propagate in this wave guide system
- Q Two identical particles, each of mass m, are located on the xaxis at x=+x0 and x=-x0a.Determine a formula for the gravitational field due to these twoparticles for points on the...
- Q When two lenses are used in combination, the first one forms animage that then serves as the object for the second lens. Themagnification of the combination is the ratio of...
- Q Members of the astronomy club just posted an article about thediscovery of a small comet which orbit is in the same orbit planeas the Earth. In the article it is...
- Q Ahydroelectric with 0.2 m radius coils has permanent magnets thatimmerse the coils in a magnetic field of 0.5 T. If the maximumtorque that the turbines can produce is 750 Nm...
- Q Determine the direction of the effective value of g⃗ g→ at alatitude of 60 ∘∘ North on the Earth.
- Q Explore gravitational forces, especially as they apply tocircular and elliptical orbits.1. With a big mass and a little one, simulate some orbits.What's necessary for there to be orbital motion? What...
- Q Lab 1: Measurements and uncertainty estimationIntroduction:The purpose of this lab is to measure aquantity related to the static friction of glass. Static frictionis the force required to start moving an...
- Q There are two identical, positively charged conducting spheresfixed in space. The spheres are 39.6 cm39.6 cm apart (center tocenter) and repel each other with an electrostatic force of?1=0.0675 NF1=0.0675 N...
- Q Â Â Â Â Â Â Â Â One of theaspects of the uncertainty principle, is that in makingmeasurements, one changes the system being measured. Give anexample of this in your everyday existence.
- Q Write down the condition for thin film interference. Calculatethe position (angular) and the distance between the 3rd and 4thdark lines of the interference pattern on the screen when the slitsare...
- Q A conductive sphere is placed in a uniform electric fieldparallel to the z axisHow much is the induced dipole moment in the sphere?
- Q An object is located to the left of a convex lens whose focallength is f=34 cm. The magnification (m) produced by the lens is4.0. Find an expression for magnification in...
- Q A 1325 kg elevator starts from rest and moves upwardsfor 4 seconds with a constant acceleration until it reaches a speedof 2.1 m/s. After 4 seconds, the speed of the...
- Q One way to store a lot of energy is to compress air in a largecave. The air starts at the corner marked by the black dot, where P= 1 atmosphere,...
- Q The name of the course Physics ofMeasurementsQuestion 3a) what is the Rejection of Data ?b) What is the Weighted Averages and how is itcalculated ?
- Q Acube with side a is located at the origin,a point charge q isplaced at each vertex .find the charge density in term of Diracdelta function
- Q #12AWG copper wire (0.081†diameter) has a current carryingcapacity of 20A. (a)With 20 A in the wire, what is the magnitude ofthe magnetic field the surface of the wire? (b)...
- Q Determine the direction of the effective value ofg⃗  at a latitude of 60 ∘ North on the Earth.Answer should be in degrees south of radially inward.
- Q A block of mass M = 10.0 kg is given an initial speed v0 = 2.10m/s from height hi down a frictionless incline plane of angle θ =75◦. After it...
- Q 1. Two positive charges are placed on the x-axis. A +10-7Coulomb charge is at the origin and a +10-7 Coulomb charge is at x=5 cm. a) Where is the electric...
- Q I ranked the steam engine as one of the half dozen mostimportant inventions in history – explaining how, even if obsoletenowadays, it was the first engine able to generate power,a...
- Q An α-particle has a charge of +2e and a mass of 6.64 × 10-27 kg.It is accelerated from rest through a potential difference that hasa value of 1.81 × 106...
- Q Water (density p=1000 kg/m^3) is discharging from through a holeat the bottom of a graduated cylinder. The mass flow rate exitingthe container may be approximated by: mass flow rate =C*p*A*(2*g*y)^(1/2)...
- Q At one instant, the center of mass of a system of two particlesis located on the x-axis at x=2.0m and has a velocity of (5.0m/s).One of the particles is at...
- Q 2. Consider two atoms, one described by the state vector |ψ1〉 =A1 |+〉−2A1 |−〉 and the other by |ψ2〉 = A2 |+〉 − A2eiπ/4 |−〉 whereA1 and A2 are real...
- Q A traffic policeman hiding behind a signboard detects a carspeeding past him with a constant speed of 150 km/h. He starts hismotorcycle 3.0 seconds later and carried out a pursuit,accelerating...
- Q Two forces are applied to a car in an effort to move it, asshown in the figure below. (LetF1 = 425 NandF2 = 367 N.Assume up and to the right...
- Q A diatomic gas containing 1.5 moles expands in an isothermalprocess from b to c. From c to a the gas is compressed from avolume of 0.1m3 to 0.04m3 at a...
- Q The OSIRIS-REx spacecraft recently reached Bennu, a 492-meterwide rocky asteroid that is not believed to have a differentiatedinterior. Clearly suggest a reason why Bennu did not differentiatecompared to rocky planets,...
- Q An object of height h is in front of a spherical mirror whichhas a focal length of abs( f ) = 30 cm. The image of this objecthas the same...
- Q Please answer with a full solution. Thanks!A Baseball is hit when it is 2.7 feet above the ground. Itleaves the bat with n initial speed of 150 ft/sec making an...
- Q Two objects, moving in one dimension, undergo an isolatedcollision. Object A has initial velocity 1 m/s. Object B has aninitial velocity -3 m/s. After the collision, the relative velocityof the...
- Q A mass m1 = 4.7 kg rests on a frictionless table andconnected by a massless string over a massless pulley to anothermass m2 = 4.3 kg which hangs freely from...
- Q Why will the resulting force lines of two positive point chargesbe like this:
- Q A point charge of -6 mu or micro CC is located at x = 2 m, y =-2 m. A second point charge of 12 mu or micro CC is...
- Q Applications of higher order differential equationsA spring has one of its ends fixed, and a force of 15 Nstretches it 20cm. A mass of 4 Kg is attached to the...
- Q Prove the following equation for the compton effect..cotâ—=(1+hv)                           m°c2
- Q Find the ground state energy of the He atom by taking theCoulomb potential between two electrons as perturbation.
- Q How might you set up a circuit that charges a capacitor slowly,then releases its charge quickly in a large current? How might acapacitor be used in a circuit to prevent...
- Q An electron with speed 2.75×107 m/s is travelingparallel to a uniform electric field of magnitude1.20×104 N/C .How far will the electron travel before it stops?How much time will elapse before...
- Q A = 2, B = 7Four forces are acting on an object in static equilibrium: Force1 has a magnitude of 46.0 N and is acting at an angle of (45...
- Q For our discussion, you will address one of three slightlydifferent versions of the case of a ball falling to the base of a50.0 m tall building.Neglect air resistance.The magnitude of...
- Q 1. In a short paragraph, describe in broad strokes theprocess by which the radio takes radio waves and converts them tosound.2. AM radio generally operates at frequencies between 0.5and 2...
- Q Refer to diagram 2.A flask contains 78.2 moles of a monatomic ideal gas at pressure8.33 atm and volume 49 liters. point A on the graph. Now, the gasundergoes a cycle...
- Q a. A 0.5 kg mass attached to a linear spring, with springconstant 5 N/m and damping constant 0.2 kg/s, is initiallydisplaced 10 cm from equilibrium. (a) What is the natural...
- Q A uniformly charged insulating rod of length 13.0 cm is bentinto the shape of a semicircle as shown in the figure below. Therod has a total charge of -6.50
- Q A box slides down a plank of length d that makes anangle of θ with the horizontal as shown. μk is thekinetic coefficient of friction and μs is the staticcoefficient...
- Q ± Calculating Flux for Hemispheres of Different Radii LearningGoal: To understand the definition of electric flux, and how tocalculate it. Flux is the amount of a vector field that \"flows\"through...
- Q An x-ray photon withinitial energy 133 keV is scattered by an electron through an angle60° with respect to its initial direction.A)Find the wavelengthof the scattered photon after the collision with...
- Q A physics book slides off a horizontal table top with a speed of1.30 m/sm/s. It strikes the floor after a time of 0.410 ss. Ignoreair resistance.Find the height of the...
- Q In this example we will apply the concept of the de Brogliewavelength to neutrons. Find the speed and kinetic energy of aneutron (m=1.675×10−27kg)(m=1.675×10−27kg) that has a de Brogliewavelength λ=0.200nmλ=0.200nm, typical...
- Q 1)A cylindrical water-tank has a small hole 60cm above the flooron which the tank stands. The depth of water in the tank is1.8m.Assume the diameter of the tank to be...
- Q 1A)Draw the direction and rough shape of magnetic field linescoming from a bar magnetB)A charged particle (your choice of charge) moving at avelocity v enters a magnetic field having amagnetic...
- Q Pose a problem situation in real life, where you need mechanicalphysics to solve it. Situations similar to those we have beenworking on previous activities (A1, A2 and A3). The problem...
- Q Two pipes, equal in length, are each open at one end. Each has afundamental frequency of 479 Hz at 299 K. In one pipe the airtemperature is increased to 306...
- Q All work and answers go on paper/tablet other than this quizpage.Mitch of 70 kg is out in space in his new spacesuit. He ischillin' and listening to his favorite tunes...
- Q Compute the image location and magnification of an object 40 cmfrom a doublet thin lenscombination having focal lengths f1 = +20 cm and f2 = −60 cm, giventhat the secondlens...
- Q A fan exerts a force of 10 N on a frictionless cart of mass 250g, accelerating the cart from rest over a distance of 0.5 m. Thesame fan is then...
- Q You have a diffraction grating with 3000 lines/cm. You also havea light source that emits light at 2 different wavelengths, 428 nmand 707 nm, at the same time. The screen...
- Q An ideal spring is in equilibrium, hanging from a ceiling with a1 kg mass at the end. At rest, the length of the hanging spring is10 cm. Then, an additional...
- Q The voltage amplitude of an ac source is 28.0V , and its angularfrequency is 1100rad/s . Find the current amplitude if thecapacitance of a capacitor connected across the source isA)...
- Q Derive the formula :, where L is distance, m is mass, z ischarge, V is potential
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