Physics question and answers for September 12, 2023
- Q Whyis that a non equilibrium has two Fermi energies? And inequilibrium has only one Fermi energy?
- Q A red car and a blue car are driving in the same direction onthe interstate. The red caris travelling at 25 m/s, while the blue car is travelling at 35m/s....
- Q 4.81e+20 electrons pass through a point in an electrical circuitevery 4.96 seconds.(a) 2080 C of charge pass through that point in how manyminutes?(b) The current though that point is ______...
- Q Object A, which has been charged to + 16 nC , is at theorigin. Object B, which has been charged to − 22 nC , isat(x,y)=(0.0cm,2.0cm)What is the magnitude of...
- Q Scientists want to place a 4 × 103 kg satellite inorbit around Mars. They plan to have the satellite orbit a distanceequal to 2.3 times the radius of Mars above...
- Q You MUST show all the diagrams, formulas,substitutions, calculations, results, and unit to receive the wholecredit for each problem.3-Â Â a) What is the difference between a mechanical wave and anelectromagnetic wave? In...
- Q A monochromatic light source emits 164 W of averageelectromagnetic power uniformly in all directions. The speed oflight is 3 � 10^8 m/s. Calculate the average electric-field energydensity 4 m from...
- Q You and your team get a distress call from another shipindicating that there has been an explosion and their propulsionand navigation systems are now off line. A large piece of...
- Q A. Consider two concentric spherical structures of radius r1 andr2 such that r1 < r2 and full load Q and -2Q respectively.Calculate the magnitude of the field on Ìectrico in...
- Q Two 10-cm-diameter electrodes 0.52 cm apart form aparallel-plate capacitor. The electrodes are attached by metalwires to the terminals of a 20 Vbattery.1--------What are a) the charge on each electrode, b)...
- Q A point charge of is at the origin, and a secondpoint charge of +6.00nC is on the x axis at x=0.800m Findthe magnitude and direction of the electric field at...
- Q GROUP Assignment. A block of mass m =680 grams is attached to a spring whose spring constantk is 65 N/m. The block is pulled a distancex = 11 cm from...
- Q 1) a 130 pound block slides up a 22.6'' en dine with coefficientof friction of 0.1 and initial velocity of 30 ft/sec. how far willthe block slide up the incline...
- Q A playground slide is 7.50 ft long and makes an angle of 34.0°with the horizontal. A 59.0-kg child, initially at the top, slidesall the way down to the bottom of...
- Q A series RCL circuit has a resonant frequencyof 1470 Hz. When operating at a frequencyother than 1470 Hz, the circuit has acapacitive reactance of 5.0 ?and an inductive reactance of...
- Q 1.A golfer hits a shot to a green that is elevated 2.80 m abovethe point where the ball is struck. The ball leaves the club at aspeed of 19.9 m/s...
- Q The amount of meat in prehistoric diets can be determined bymeasuring the ratio of the isotopes nitrogen-15 to nitrogen-14 inbone from human remains. Carnivores concentrate 15N, so this ratiotells archaeologists...
- Q A cannonball at ground level is aimed 30 degrees above thehorizontal and is fired with an initial speed of 125 m/s. A) howfar away from the cannon will the cannonball...
- Q A football kicker can give the ball an initial speed of 25.0m/s. What are the (a) least and (b) greatest elevation angles atwhich he can kick the ball to score...
- Q Suppose the Earth is really flat. Shaped like a penny, it hasone side that faces the Sun at all times. Suppose this Earth is thesame temperature everywhere (including the side...
- Q Answer it in detail (1-2 paragraphs)1. Define a reference frame and then an inertial referenceframe. Give example of both inertial and non-inertial referenceframes.2. Explain the concept of time dilation. What...
- Q (iii) A consequence of the Free Electron approach is that theelectron mass me effectively becomes a variable, the so-calledeffective mass, me * , which is governed by the curvature of...
- Q For higher accuracy, should R decade be large or small? Why?
- Q adiffraction grating has 400 slits in total. would you be able toresolve the sodium doublet in the 3rd order with this grating?explain the wavelengths of the sodium doublet are 589nm...
- Q Explain why there is more danger when you fall and bounce asopposed to falling without bouncing.
- Q Laser light from argon ion laser of wavelength 488.0 nm passesthrough a diffraction grating. The first bright spots occur at anangle 6.726 degree left and right from the central maximum....
- Q The solar wind consists of protons, electrons and other heavierirons and they have velocities of several hundred km per second.Moving charged particles experience a force when in an externalmagnetic field....
- Q A converging lens has a focal length of 9.0 cm. Locate theimages for the object distances of (a) 20.0 cm, (b) 10.0 cm, and(c) 5.00 cm, if they exist. For...
- Q An 90mm focal-length lens is used to focus an image on the filmof a camera. The maximum distance allowed between the lens and thefilm plane is 130mm .A. How far...
- Q describe how you can use a magnet to exert both a contact forceand a non-contact force on another magnet?
- Q A family comes home from a long vacation with laundry to do andshowers to take. The water heater has been turned off duringvacation. If the water heater has a capacity...
- Q The position of a 0.30-kg object attached to a spring isdescribed by x = (0.24 m) cos(0.8Ï€t). (Assume t is in seconds.) (a)Find the amplitude of the motion. 0.24 Correct:...
- Q A bomb at rest at the origin of an xy-coordinate system explodesinto three pieces. Just after the explosion, one piece, of mass 4kg, moves with a velocity of 45 m/s...
- Q The Millennium Falcon is trying to stay in the Death Star’sblind spot by following a geosynchronous orbit above it. The Falconis 2.1x10^5m above the surface of the Death Star,which has...
- Q Given :Vitrified canister equal 1.5 fuel assemblies (f.p. andMA; Capacity: 155 litres; weight: 490 kg; height: 1.3 m; diameter:43 cm). An amount ofabout 1 TWh enough for a city of...
- Q Describe elastic, inelastic, and completely inelasticcollisions. Which type of collisions are you going to investigatein the lab?Do you expect the linear momentum of the system to be conservedin your experiment?In...
- Q Part A: Increasing Piston Displacement (L)L (cm)Pg (atm)7.01.68.01.349.01.210.01.111.00.1012.00.913.00.814.00.7215.00.6916.00.617.00.5918.00.5219.00.520.00.4921.00.4522.00.3523.00.324.025.00.30.291. Calculate the product of the pressure P and length L for everyrow in both data tables.2. Calculate the deviation for each value...
- Q A cart for hauling ore out of a gold mine has a mass of 423 kg,including its load. The cart runs along a straight stretch of trackthat is sloped 4.51
- Q ((8.27)Q:7)Two ice skaters, Daniel (mass 70.0 kg ) and Rebecca (mass 45.0kg ), are practicing. Daniel stops to tie his shoelace and, whileat rest, is struck by Rebecca, who is...
- Q Consider a satellite of mass ms in circular orbit around Earth,a distance h above Earth's surface. Assume the Earth is a spherewith radius Re and mass Me.(a) As the satellite...
- Q A string of total mass 3.00×10-2kg is stretched to alength of 4.9m by applying a tension of 14.20N. You flick the endof the string, sending a pulse to the far...
- Q 1. What are the factors in determining your takeoff criticalfield length for a certain runway? If after doing initialcalculations you find the runway is too short, what might you beable...
- Q A home run is hit in such a way that the baseball just clears awall 21.0 m high, located 130 m from home plate. The ball is hit atan angle...
- Q How is GEOMETRIC OPTICS relevant to the development ofautonomous or semi-autonomous technology and include? How isMagnetic field relevant to the development of autonomous orsemi-autonomous technology and include?
- Q It was shown in Example 21.11 (Section 21.5) in the textbookthat the electric field due to an infinite line of charge isperpendicular to the line and has magnitude E=λ/2πϵ0r. Consider...
- Q Do regions where there is high electric potential also meanthere is a high electric field?
- Q 1.X-rays are scattered from electrons in a carbon target. Themeasured wavelength shift is 0.00131 nm. Calculate the scatteringangle. The speed of light is 3 × 108 m/s and Planck’s constant...
- Q ANSWERS MUST BECORRECT: (Detailed explanation of order of processesrequired. Take your time and answer it perfectly to receive credit.The most detailed answer and explanation will be awardedpoints).A series RC circuit...
- Q A rectangular piece of cardboard with an L-shaped hole is held1.0m directly in front of a point source of light. The cardboard is1.5m away from a wall. The cardboard and...
- Q A small mailbag is released from a helicopter that is descendingsteadily at 2.77 m/s.(a) After 4.00 s, what is the speed of the mailbag?(b) How far is it below the...
- Q 2. A 2kg puck is located at position (5???? 2???)m with velocity(?7???? ???)m/s at time t=0s. I apply aconstant force of magnitude 10N in the direction (?4???+ 2???) for10 seconds....
- Q Imagine an isolated, 10-liter cylinder containing one mole ofideal gas held in the left five liters of the cylinder by a piston,initially locked in place. The right half of the...
- Q In this problem, you will apply kinematic equations to a jumpingflea. Take the magnitude of free-fall acceleration to be 9.80 m/s2. Ignore air resistance.A flea jumps straight up to a...
- Q Face west and set the time for February 1, 2012 at 9p.m. Observe the position of Venus at the beginning ofeach month through June 1, 2012. Explain where you would...
- Q In a physicslaboratory experiment, a coil with 250 turns enclosing an area of11.8cm2 is rotated in a time interval of 3.00
- Q An oscillating LC circuit is set up with an inductor with L = 60mH and a capacitor with C = 4.0 µF with a maximum voltage of 3.0 V.Initially, at...
- Q Two identical diverging lenses are separated by 17 cm. The focallength of each lens is -8.0 cm. An object is located 4.0 cm to theleft of the lens that is...
- Q A sound wave generated by a source of frequency 440 Hz is movingthrough 25 oC air. The sound wave strikes a solid blockof steel and propagates into the steel. What...
- Q 2.5 Use the de Broglie relation λ=h/p to find the wavelength ofelectrons with kinetic energy equal to 550 eV. Indicate ifrelativistic or classical calculations are required.2.3 Determine the energy of...
- Q An L-R-C series circuit consists of a60.0 Ω resistor, a 10.0 μF capacitor, a 3.60 mH inductor,and an ac voltage source of voltage amplitude 60.0 V operating at1450 Hz .a.)...
- Q 1) Conceptual differences anddifferences in equations between the electricdipole and magnetic dipole.Add as much information as possible please.
- Q using energy: a mass, m1 = 5kg, resting on a frictionless rampis connected to a cable that passes over a pulley which is thenattached to a second hanging mass, m2...
- Q Does the acceleration vector change at all throughout theprojectile’s flight? Why or why not?Compare two complementary angles such as 30? and 60?. What isthe same? What is different?How does changing...
- Q You wish to buy a new freezer for your basement. The primary useof the freezer will be to prepare ice for family parties. You havea very large family, with grandparents,...
- Q With the aid of a diagram, write a short account of the imageformation process in the human eye. Include notes on the correctionof common conditions (myopia, hypermetropia and presbyopia) usingsuitable...
- Q 1. What is a given= 0.215 [ms^-2] and diameter of disk withuniform mass distribution= 19.5 [cm].theta= ?2. Using information found in previous question, if the droppingmass is 195 [g], then...
- Q A hollow plastic sphere isheld below the surface of a freshwater lake by a cord anchored tothe bottom of the lake. The sphere has a volume of0.700m3and the tension in...
- Q Correct asnwer for 5 star rating.Suppose that you release a small ball from rest at a depth of0.520 m below the surface in a pool of water. If the density...
- Q heighttime1time2time3time4avg time2 m0.45 s0.43 s0.35 s0.36 s0.39 s1.8 m0.4 s0.5 s0.48 s0.42 s0.38 s1.4 m0.41 s0.36 s0.37 s0.33 s0.37 s1.1 m0.37 s0.33 s0.33 s0.40 s0.36 s1) Using one of your...
- Q Cesium-124 has a half-life of 30.9 s.a) How many Cs-124 nuclei are in 19 micrograms of saidisotope?b) How about after 2.4 min?c) How strong is its activity then?d) After which...
- Q What is fluorescence and how is it generated? explain absorptionand emission
- Q The two wires carry current i1 and i2,respectively, with positive current to the right. The charge q ispositive and has velocity v to the right.True False  If i1 is greater thani2,...
- Q 8.) When you look at most people
- Q What is the maximum velocity of electrons ejected from amaterial by 90 nm photons, if they are bound to the material by4.73 eV?
- Q The figure above shows a portion of the trajectory of a balltraveling through the air. Arrows indicate its momentum at severallocations. At these locations, the ball's momentum is: B =...
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