Physics question and answers for September 03, 2023
- Q A 7.0-kg rock at a temperature of 30°C is dropped into a shallowlake at 30°C from a height of 1.0×10^5 m. What is the resultingchange in entropy of the universe?...
- Q True or FalseDetermine if the following statements are true orfalse._____ 1. A liquid takes the volume of its container._____ 2. Particles of amorphous solids have no definitepattern._____ 3. A beef...
- Q A certain refrigerator has a COP of 5.00. When the refrigeratoris running, its power input is 500 W. A sample of water of mass 500g and temperature 20.0 ºC is...
- Q A 4.9-m-wide swimming pool is filled to the top. The bottom ofthe pool becomes completely shaded in the afternoon when the sun is22 ∘ above the horizon.
- Q Write a few lines about: Fluids, Density, Pressure, change ofPressure with Depth in a liquid (water) and Archimedes’ Principle.What the SI units on each of them and give some practical...
- Q A cement block accidentally falls from rest from the ledge of a51.7-m-high building. When the block is 18.7 m above the ground, aman, 2.00 m tall, looks up and notices...
- Q An object is 1.6 m to the left of a lens offocal length 0.6 m. A second lens of focal length-4 m is 0.58 m to the right ofthe first...
- Q Abullet with the mass of 2.5 x 10^-3 kg is shot from a gun with avelocity of 1.2 x 10^2 m/s. (momemtum/impulse problem)a. What is the impulse applied to the...
- Q Two loudspeakers on a concert stage are vibrating in phase. Alistener is 45.9 m from the left speaker and 34.7 m from the rightone. The listener can respond to all...
- Q A proton is traveling horizontally to the right at4.20×106 m/s.A) Find the magnitude of the weakest electric field that canbring the proton uniformly to rest over a distance of 3.50...
- Q If the coefficient of kinetic friction between tires and drypavement is 0.90, what is the shortest distance in which you canstop an automobile by locking the brakes when traveling at...
- Q Two asteroids of equal mass in the asteroid belt between Marsand Jupiter collide with a glancing blow. Asteroid A,which was initially traveling at vA1 = 40.0 m/s withrespect to an...
- Q A tube 12 cm in diameter is carrying engine oil a distance of 4meters from barrel to outlet. If the pressure difference betweenthe ends of the tube is 1064.28 atm...
- Q 3.19 A gas with adiabatic exponent γ is compressed adiabaticallyfrom an initial state (Pi, Vi) to final state (Pf, Vf). (a) Showthat the work done in this process isW=((ViPi)/y-1)*[(Vi/Vf)^(y-1) -1](b)...
- Q A frictionless vertical post is inserted into a bowling ballwith a hole drilled through its center. The ball has a mass of 10.5kg. A rope is attached to a ring...
- Q In this problem we want to calculate the electric field due toseveral charge linear distributions .a) Consider a thin rod oflength L. The rod carries a uniform charge density, λ,...
- Q Two very long wires run in the z direction, one at (1,0) cm, theother at (-1,0) cm. (a) If both wires are carrying a positivecurrent of 0.6 A upwards in...
- Q Compute the equivalent focal length of the followingthick lens combination:Lens A: R1 = 16.28mm, R2 = -275.7mm, n = 1.6116, d = 3.57mmDistance: 1.89 mmLens B: R1 = -34.57mm, R2...
- Q Three spheres are arranged in the xy plane as in thefigure below. The first sphere, of massm1 = 15.6 kg,is located at the origin; the second sphere, of massm2 =...
- Q A roller-coaster car speeds down a hill past point A where R1 =11.6 m and then rolls up a hill past point B where R2 = 15.2 m, asshown below.(a)...
- Q Discuss how Maxwell's predictions were confirmed by theexperiments carried out by Hertz. Please use own words at least 2paragraphs.
- Q A thick lens has an index of refraction of 1.60. It is 4-cmthick and is surrounded by air. The radius of curvature of thefront surface is 5 cm, and the...
- Q Compare and contrast a simple pendulum with a mass/springpendulum. Be sure to address velocity, acceleration, and energyconversions.
- Q A proton with an initial velocity of 3.9 106 m/s enters aparallel-plate capacitor at an angle of 46° through a small hole inthe bottom plate as shown in the figure...
- Q In the shot put, a heavy lead weight—the \"shot\"—is given aninitial velocity, starting from an initial elevation approximatelyequal to the shot putter's height, say, 2.00 m. If v0 = 7.05...
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