Physics question and answers for October 08, 2023
- Q 1. Parallel light rays pass through a converging lens anda. stay parallelb. all travel to a point that is at a defined distance away fromthe lensc. diverge rapidlyd. reflect back...
- Q A point charge of -1C is placed in the center of a sphericalshell of radius R and with surface charge densityσ=1C/2πR^2.Calculate the magnitude of the electric field inside andoutside the...
- Q Mary spots Bill approaching the dorm at a constant rate of 2 m/son the walkway that passes directly beneath her window, 17 m abovethe ground. When Bill is 120 m...
- Q A box of mass 5kg moves to the left at a speed of 6m/s. The boxis moving toward an unstretched spring of spring constant 500N/mthat is attached to a barrier....
- Q Determine the magnitude of the gravitational force Mars wouldexert on man if he was on the surface of Mars. The mass of the manis 67.0kg . The mass of the...
- Q 1. Explain the difference between linear, radial, and angularacceleration and identify which \"G\" force vector is mostsignificant in normal aircraft flight.
- Q Prelab 7: DC Circuits 1What are the units of Resistance?Watch the video tutorial about series and parallel circuits.Explain what ammeters and voltmeters do – Why are they hooked up tothe...
- Q <1>An automobile of mass 1500kg moving at 25m/s collides with atruck of mass 4500kg at rest. This time, the car and the truckbounce off each other completely elastically. What is...
- Q A block slides down a frictionless inclined ramp. If the rampangle is 26° and its length is 29 m, find the speed of the block asit reaches the bottom of...
- Q A thin, rectangular sheet of metal has mass M and sides oflength a and b. Find the moment of inertia of this sheet about anaxis that lies in the plane...
- Q If matter has a wave nature, why is this wave-likecharacteristic not observable in our daily experiences?Any object of macroscopic size—including a grain of dust—has anundetectably small wavelength, so any diffraction...
- Q Part 1. A certain helix in three-dimensional space is describedby the equations x = cos theta, y = sin theta, and z = theta.Calculate the line integral, along one loop...
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- Q An LED that emits light of wavelength λ = 614 nm illuminates thephototube. A reverse bias is applied to the phototube (a voltagethat opposes the current flow). This is adjusted...
- Q A wheel has an initial angular velocity of 1 rad/s and undergoesan angular acceleration of 10 rad/s^2. (a) How many radians does itrotate in 4 sec? (b) What is its...
- Q An alpha particle with kinetic energy 12.0 MeV makes a collisionwith lead nucleus, but it is not \"aimed\" at the center of the leadnucleus, and has an initial nonzero angular...
- Q The heat capacity, Cp, of liquid carbon disulfide is arelatively constant 78J(molK). However, the heat capacity of solidcarbon disulfide varies greatly with temperature. From 99K to itsmelting point at 161K,...
- Q a projectile is launched from ground level to the top of a cliffwhich is 95 m away and 155 m high. If the projectile lands on topof the cliff 7.6...
- Q Demonstrate that the ground-state wave function for theone-dimensional harmonic oscillator satisfies the appropriateSchrodinger's equation
- Q An arrow strikes the target at the end of a 27-meter-long lane.It lands at an angle of 4 degrees below the horizontal. What is theinitial velocity at which the arrow...
- Q Please Show work1) A certain medical machine emits x-rays with a minimumwavelength of 0.025 nm. One day, the machine has an electricalproblem and the voltage applied to the x-ray tube...
- Q 3 boxes, having masses m1=5kg, m2=10kg andm3=15 kg are stacked \"sideways\" (i.e., in x-) on a surfacewith coefficient of kinetic friction 0.7muk; an external force of magnitude 15N pushes on...
- Q A yo-yo has a rotational inertia of 900 g · cm2 and a mass of100 g. Its axle radius is 3.2 mm, and its string is 120 cm long.The yo-yo...
- Q 1. Water is in the big beaker in the figure on the left. Scale 1reads 58 newtons, scale 2 reads 908 newtons, and scale 3 reads 0newtons. The hanging block...
- Q Four masses of values 3, 7, 2 and 5Kg lie at the corners of arectangle of dimensions 8 by 7 m (x by y). Placing the 3kg mass atthe origin...
- Q How would you connect a pair of equal resistors across a batteryin order to get the most power dissipation in the resistors?
- Q From a point 96 ft above the ground, a stone is thrownin such a way that it is at the same point: 3 sec after it wasthrown, as it was...
- Q 1. If 55.1 cm of copper wire (diameter = 1.18 mm, resistivity =1.69 × 10-8Ω·m) is formed into a circular loop andplaced perpendicular to a uniform magnetic field that is...
- Q The minimum stopping distance for a car depends on the driver’sreaction time and the car’s acceleration when the brakes areapplied. A 1000 kg car traveling on a level road at...
- Q The power supply, the resistorsand the wires can be connected such that the current drawn from thesupply is smaller than the ratio of voltage provided by the powersupply and the...
- Q William Tell shoots an apple from his son's head. The speed ofthe 118-g arrow just before it strikes the apple is 20 m/s, and atthe time of impact it is...
- Q Using a rope that will snap if the tension in it exceeds 387 N,you need to lower a bundle of old roofing material weighing 449 Nfrom a point 6.1 m...
- Q A sphere with radius a has uniform charge/volume.A metal sphere shell has inner radius b(from center) and outerradius c(from center).Between a and b is empty.Outer metal shell has total charge...
- Q An astronomical telescope is being used to examine a relativelyclose object that is only 107.00 m away from the objective of thetelescope. The objective and eyepiece have focal lengths of...
- Q We know why a charged rod can deflect water droplets which isbecause of the positive side of water molecule attracting to thenegative side of the rod and vice versa. While...
- Q The drawing shows a skateboarder moving at 6.60 m/s along ahorizontal section of a track that is slanted upward by θ = 52.0°above the horizontal at its end, which is...
- Q An object 1cm tall is placed at 4cm from a convex lens with afocal length of 6cm. A convex mirror with a focal length of 4cm issituated 10cm from the...
- Q Straight wooden rod of mass 6.0 kg, uniform cross-section 7cm2, and constant density 700 kg has a very small mass0.8 kg attached to its one end. The rod is partially...
- Q derive maxwell Boltzmann statistics law.
- Q A force F⃗ of magnitude F making an angleθ with the x axis is applied to a particlelocated along axis of rotation A, at Cartesian coordinates (0,0) inthe figure. The...
- Q A 2.0 kg wood block is launched up a wooden ramp that isinclined at a 29 ∘ angle. The block's initial speed is 11 m/s . Thecoefficient of kinetic friction...
- Q I'm doing this homework on relativity and I'm not very good atit. :( I keep getting things wrong or confused in my head. Pleasehelp me to understand this! Thank you...
- Q Cart 1 with inertia (mass) 1 kg and initial velocity 1 m/scollides on a frictionless track with cart 2, with initial velocity1/3 m/s. If the final velocity of cart 1...
- Q A textbook of mass 2.06 kg rests on a frictionless, horizontalsurface. A cord attached to the book passes over a pulley whosediameter is 0.100 m , to a hanging book...
- Q A 15.0 kg sled is pushed at 5 m/s up an icy slope that has anincline angle of 10 degrees. If the coefficient of kinetic frictionis 0.050, how far up...
- Q You accidentally drop an eraser out the window of an apartment17 m above the ground.Part A:How long will it take for the eraser to reach the ground?Express your answer to...
- Q A uniform ladder of length L and mass m leansagainst a frictionless vertical wall, making an angle of 55° withthe horizontal. The coefficient of static friction between theladder and the...
- Q Very large magnetic fields can be produced using a procedurecalled flux compression. A metallic cylindrical tube of radius R isplaced coaxially in a long solonoid of somewhat larger radius. Thespace...
- Q At t = 0, a flywheel has an angular velocity of 6.2 rad/s, anangular acceleration of -0.18 rad/s2, and a reference line at θ0 =0. (a) Through what maximum angle...
- Q If the wavelength of a wave on a string is increased, will yousee more nodes or fewer nodes? Explain.
- Q Describe how the electrons in Rutherford's atom must havebehaved, and explain why this model could not have beenpossible.
- Q The angular position of a point on the rim of a rotating wheelis given by θ = 9.33t - 3.93t2 + 1.09t3, where θ is in radians andt is in...
- Q A yo-yo has a rotational inertia of 977 g
- Q Theoretically prove the boundary conditions for waves inclosed-open tubes. Please provide pictures.
- Q A beetle with a mass of 25.0 g is initially at rest on the outeredge of a horizontal turntable that is also initially at rest. Theturntable, which is free to...
- Q Please answer these 3 questions...thank you!List two ways in which electric and magnetic fields and forcesare similar.List two ways in which electric and magnetic fields and forcesare different.If moving charges...
- Q calculate the work done when: a) a 55 N force actingat an angle of 28 degrees to the horizontal pushes an object 5mhorizontally. b) a spring of spring constant 45n/m...
- Q 6-Torque on a coil. A circular loop of wire has a diameter of20.0 cm and contains 10 loops. The currentin each loop is 3.00 A, and the coil is placed...
- Q Your employer asks you to build a 23-cm-long solenoid with aninterior field of 6.0 mT . The specifications call for a singlelayer of wire, wound with the coils as close...
- Q the total voltage change around a circuit is alwayspositive.this is a false statement. why?
- Q Find numerical examples of energy usage and thermodynamiccomputations of efficiency. Use the web to compare the efficienciesof several power production processes. Which are in use and whichare planned?Be sure to...
- Q Find the electric field vector anywhere in the plane of adipole. Let the charge value on onecharge be q. Let them be separated by d. Let the origin be inbetween...
- Q In the figure (Figure 1) a conducting rod of length L =37.0 cm moves in a magnetic field B⃗ of magnitude 0.500 Tdirected into the plane of the figure. The...
- Q A 1210 kg car is driving on 60 km/h on an inclined plane. Thecar is located on the top of the plane. The plane is 655 m long andthe angle...
- Q A fulcrum is placed at the 55 cm position of a 100 cm (1 meter)stick with a mass of 18 kg. a 10 kg mass is placed at 70 cmposition....
- Q You use a slingshot to launch a potato horizontally from theedge of a cliff with speed Ï…0. The acceleration due to gravity isg. Take the origin at the launch point....
- Q A spring gun fires a bullet of mass m=.04 kg horizontally at aballistic pendulum apparatus with a mass M=.350. the bullet lodgesitself into the pendulum. After collision, the center of...
- Q Through cunning physics trickery I havetrapped a point charge Q at the center of a thin-walledhollow conductive sphere of radius R, which itself carries anet charge of -3Q.a. Â Â How...
- Q 1. You measure the Gravity constant which is g= 9.8 m/s2. Ifyour experiment yields a value for g=8.85 m/s2, what is thepercentage error in the value of g?
- Q - In a cylindrical container with a base area A, there are Nmonatomic gas particles at temperature T which are ideal. The upperpart of the container is closed with a...
- Q Show that the equation v2=v02−2g(y−y0) is dimensionally consistent. (use dimensionalanalysis)
- Q A solid, homogeneous sphere with a mass of m0, aradius of r0 and a density of Ï0 is placed ina container of water. Initially the sphere floats and the waterlevel...
- Q Movers push an 80 kg trunk at 1.0 m/s when they encounter a 2.5m long stretch of floor where the coefficient of kinetic frictionis 0.30. During this stretch of floor,...
- Q In a women's 100-m race, accelerating uniformly, Laura takes1.84 s and Healan 2.93 s to attain their maximum speeds, which theyeach maintain for the rest of the race. They cross...
- Q Two astronauts float in deep space, at rest relative to eachother. Including the equipment they carry, the first astronaut hastotal mass 521 kg and the second astronaut has total mass...
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