Physics question and answers for August 03, 2023
- Q Consider the step potentialV (x) = 0 x ≤ 0 (I)= V0 x > 0 (II) .(a) What does the wave function for the scattering problem with 0< E <...
- Q If the 2.00 cm diameter inlet tube narrows to 1.00 cm indiameter, what is the pressure drop in the narrow section for the2.16 m/s airflow in the 2.00 cm section?...
- Q Bats can navigate using the earth’s field—a plus for an animalthat may fly great distances from its roost at night. If, whilesleeping during the day, bats are exposed to a...
- Q A sphere of matter, of mass M and radiusa, has a concentric cavity of radiusb. Find the gravitational force Fexerted by the sphere on a particle of mass m,located a...
- Q A straight wire carries a 12-A current eastward and a secondstraight wire carries a 14-A current westward. The wires areseparated by a distance of 42 cm. The force on a...
- Q A uniform line charge of linear charge density = 2.9 nC/mextends from x = 0 to x = 5 m.a) What is the total charge?b) Find the electric field on...
- Q A sound wave is oscillating in the n=7 mode in a tube oflength 3.25 m. What is the wavelength and frequency of the standingsound wave in the tube if the...
- Q A uniform disk of mass 371 kg and radius 0.19 m is mounted onfrictionless bearings so it can rotate freely around a verticalaxis through its center (see the following figure)....
- Q The next two questions refer to the following physicalsituation:Two blocks (masses m1 = 30 kg andm2 = 7 kg) sit atop one another as shown below.The coefficient of static friction...
- Q The figure shows an initially stationary block of massm on a floor. A force of magnitude 0.500mg isthen applied at upward angle θ = 20°. What is themagnitude of the...
- Q Please state the mechanisms for generating (a)continuous wavelength and (b) characteristicwavelength X-rays in a X-ray tube. (c) explain thereason for the intensity of X-ray spectrum as changes withacceleration voltage of...
- Q If a disk and a ring both have the same mass and radius, whichone has the greater moment of inertia? Why is this so?A figure skater doing pirouettes spins faster...
- Q A cylindrical proportional tube has an anode wire radius of0.003 cm and a cathode radius of 2.0 cm. It is operated with anapplied voltage of 2000 V. If a minimum...
- Q A 0.92 kg mass is attached to a light spring with a forceconstant of 30.9 N/m and set into oscillation on a horizontalfriction-less surface. If the spring is stretched 5.0...
- Q An apple falls from a tree and feels no air resistance. As it isfalling, which of the following statement is correct?The apple’s momentum and apple-Earth mechanical energy areconserved.Its kinetic energy...
- Q Two converging lenses(f1 = 9.40 cmandf2 = 5.50 cm)are separated by 17.9 cm. The lens on the left has the longerfocal length. An object stands 12.4 cm to the left...
- Q After a trip to the store a 70.0-kg person is carrying heavybags perpendicular to the direction of motion. How much work isbeing done by the person on the bags? Use...
- Q (about solid state physics, opticalcommunication)The main principle of optical communication is the concept of totalreflection. I wonder if the total reflection is based on particleproperty of light, or wave property...
- Q (c) Discuss the Minkowski spacetime diagrams. Show the worldlines for a particle at rest and a photon on such a diagram.Explain the concept of light cones and draw it on...
- Q compare betweenTexture of polycrystalline andamorphous and single crystal material from where , grain size,effect of temperature on x rayintensity, structurefactor.
- Q a tire is filled with air at 14 ∘c to a gauge pressure of 230kpaIf the tire reaches a temperature of 35 ∘C∘C, what fraction ofthe original air must be...
- Q A mass of 3 kg of water at 50oC has been heated to vapour at atemperature of 125oC in an oven. The specific heat capacities forwater in the form of...
- Q 1.For an angle of zero between the magnetic field and the vectornormal to the plane of the coil: (a) What happens to the light bulbas it enters the magnetic field...
- Q fred places two circular loops of conducting wire, one large(radius R) and one small (radius r),on a horizontal table such that they are centred at the same point.He arranges the...
- Q Compare and contrast the four-planet detection techniquesdescribed during lectures. Use labelled diagrams and equationsrelevant to each technique to illustrate and support yourstatements. The methods are: Transit detection, Radial velocitymethod, direct...
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