Physics question and answers for August 07, 2023
- Q If you mix 10.5 gm of steam at 100 C with 1,010.0 gm of ice at 0C what is the change in entropy? Heat of fusion = 79 cal/gm, Heatof...
- Q You work for the National Park Service testing a small cannonused to prevent avalanches by shooting down snow overhanging thesides of mountains. In order to determine the range of the...
- Q A 2.00 m long uniform steel bar rests on the ground and againstthe wall. Both the wall and the ground are frictionless. THe steelbar makes an angle of 50 degrees...
- 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 Two balls of clay collide in a perfectly inelastic, head-oncollision. Suppose m1 = 0.5 kg, m2 = 0.25 kg, v1o = +4 m/s, and v2o= -3 m/s. (a) Find the...
- Q Write down the Beer-Lambert law as it applies to neutronradiography. Calculate the attenuation coefficient of hydrogen andiron for thermal neutrons and for 100 KeV X-rays (four attenuationcoefficients in total). Show...
- Q even though a Jovian planet is close to its star, its interiortemperature is cool. explain what this tells me about the planet'smass.
- Q You shoot an arrow into the air at an initial velocity of12.5m/s at an angle of 40º.Find the maximum height the arrow reaches in the air.Find the time it takes...
- Q On the exoplanet Trappist-1d, g = 6.74 m/s2and on Mars g = 3.73 m/s2. A fully suited-up astronauthas a mass of 125. kg.1) When she is on a ladder 1.50...
- Q In a thought experiment, a cubic box of side length 0.01 mmcontains three particles. One particle moves just in thex-direction, colliding elastically with the left and right walls ofthe cube....
- Q 1. A commuter train passes a passenger platform at a constantspeed of 41.7 m/s. The train horn is sounded at its characteristicfrequency of 350 Hz.(a) What overall change in frequency...
- Q Why is a diffraction grating better than a two-slit setup formeasuring wavelengths of light?
- Q given an electron has orbital angular momentum and spin angularmomentum, l and s respectively.given the following relations:[lx,ly] = ih(bar)lz , [ly,lz] = ih(bar)lx , [lz,lx] =ih(bar)ly[sx,sy]= ih(bar) sz , [sy,sz]...
- Q A 31 kg crate full of fruits is placed on an incline that is 17â—¦below the horizontal. The crate is connected to a spring that isanchored to a vertical wall,...
- Q Assignment – The World’s Largest Ferris WheelsThe Singapore Flyer is a giant Ferris wheel located in Singapore.Described by itsoperators as an observation wheel, it reaches 42 stories high, witha total...
- Q Show a complete solution to the following question.A 10.0 kg block is being held in place at the top of a rough rampwhich is at a 45 o angle to...
- Q Some virtual teams at Boeing have discussions focused onmilitary aircraft. Do some Internet research on UC securitymechanisms and identify and briefly describe several that Boeingshould have in place to ensure...
- Q You are in a circular Earth orbit with a velocity of 1 DU/TU.Your service module is in another circular orbit with a velocity of0.5 DU/TU. What is the minimum delta...
- Q A particle of mass 2.00 kg moves with position r(t) = x(t) i +y(t) j where x(t) = 10t2 and y(t) = -3t + 2, with x and y in...
- Q Calculate the reactive force and reactive muscle moment atJustin Verlander’s knee for a seated leg extension, with a weightof 55, 75, and 95 lbs. Assume that the leg is held...
- Q General RelativityQ: What is Einstein’s equivalence principle?Q: What is gravitational lensing? Why is it useful forcosmology?Q: What is gravitational time dilation?Q: What are MACHOs? What does the MACHO microlensing result...
- Q When a glass rod is rubbed with silk, it becomes positive andthe silk becomes negative, yet both attract dust. Is it possiblethe dust has a third type of charge that...
- Q It’s early fall and you are driving along a two-lane highway ina rented moving van. It’s full of all of your possessions so youand the loaded truck weigh 8000 lb....
- Q 6. Which of the following are steps toward measuring thedistance to stars using spectroscopic parallax? a) Measure thestar’s spectral type and calculate the mass. b) Measure the star’sspectal type and...
- Q A thin wall cubic container is half-filled with water. What isthe vertical position of the center of gravity if the container istipped over just to the point where is about...
- Q The New England Merchants Bank Building in Boston is 152 mmhigh. On windy days it sways with a frequency of 0.19 HzHz , andthe acceleration of the top of the...
- Q Cosmic microwave backgroundQ: How is the CMB cosmic? Microwave? Background? Radiation?Q: What are observed CMB properties?Q: What is the last scattering surface?Q: How does CMB verify the Cosmological Principle?Q: What...
- Q Suppose you have 2.0mol of O2 gas.How many coulombs of positive charge are contained in this gasin the atomic nuclei?Express your answer using two significant figures
- Q List 4 things we can learn about astar using spectroscopy.
- Q Objects that move in a straight line with a constantspeed—not speeding up or slowing down—have zero acceleration. Wecall this kind of motion: Uniform Motion. We can identifyuniform motion when the...
- Q Give a brief description of chaos. What features must aHamiltonian system have in order to exhibit chaotic dynamics?
- Q In a schoolyard fight 75-lb Isaac shoves 90-lb Galileoto the ground. Who exerts a larger force on the other and why?
- Q Parametric Equations Project (Launch Angle)A 90mph fastball can leave a player’s bat at the speed of110mph. Suppose abatter hits such as fast ball at a height of three feet above...
- Q As the winter passes, the Earth spins as usual around the Sun.On a cold February night just past midnight, a lone astronomerspots an unusual object in the starlit sky. Near...
- Q Select the correct answer or answers for each and explain:1. When you take a book from your desk and put it up on a shelfabove you the work done on...
- Q Explain the concept of Interference of Light Waves for doubleslit problems to a grade 12 classmate who was absent from class.Use visual aids and examples.
- Q Solar energy is an alternative to fossil fuels for providingelectrical power for both homes and businesses. It may be locallyproduced and used at the same location as the panels, which...
- Q 14. Explain the Coriolis effect. Where does the factor of 2 inthe mathematical formulation of the Coriolis force come from?
- Q AstrophysicsHow do we know which one of the two energy transport equationsto use?
- Q Three charge particles are shown in the figure below,Q1=-11 nC (-3.50cm,0), Q2=3 nC (0,0)andQ3=7 nC (1.50cm, 0).all at x axisA) Find the magnitude of net force acting on Q1 .What...
- Q Question 4. BONUS 20pts. Now relax and think about all studiedtopics in the General Physics course. You are asked to define 10different \" The right-hand rule\". Here you first define...
- Q Problem 5.135 An insulated 0.15-m3 tank contains helium at 3 MPaand 130°C. A valve is now opened, allowing some helium to escape.The valve is closed when one-half of the initial...
- Q You have a lightweight spring whose unstretched length is 4.0cm. First, you attach one end of the spring to the ceiling and hanga 1.4 g mass from it. This stretches...
- Q a 100 kg student is compressed 50 cm on a spring with a springconstant of k = 80,000 N/m. He is on top of a 10 m frictionlesshill. He then...
- Q You go out to the barn and start up the egg collecting machine.Eggs slide down a 30 degree ramp with a coefficient of kineticfriction of 0.2. What is the acceleration...
- Q Charlie kicks a soccer ball up a small incline. On the way up,ball’s acceleration has magnitude |a| = 0.45 m/s2 and is directedin downhill direction. Charlie kicks the ball at...
- Q In the figure, block 1 of mass m1 slides from rest along africtionless ramp from height h = 3.3 m and then collides withstationary block 2, which has mass m2...
- Q Two charged droplets of toner ink behave as two shells ofuniform surface charge density. (Toner is an insulating material,not conductive.) The two drops have total charge qi, radiusRi, andcentre positionri,i=...
- Q Two parts:a) An object with an initial massmi=7and an initial velocityvi=6m/s making an angle of 40degrees with the +x axis has, after a time 4seconds, final velocityvf=3making an angle of...
- Q Question 6a. If the contact angle of a liquid with its container walls is 90°what can we say about the different forces involved and what arethose forces? Include a discussion...
- Q Pure stoichiometric ZnO is heated to 1400 K in an evacuatedchamber of a vapor deposition furnace. What is the partial pressureof Zn and O2 generated by the thermal decomposition of...
- Q How small an object has to be before it starts to showquantum mechanical affects?Like if we keep hypothetically breaking down amacroscopic object smaller and smaller, in which size (negativepower of...
- Q A car can decelerate at -3.25 m/s2 without skidding when comingto rest on a level road.What would its deceleration be if the road is inclined at 9.2 ∘and the car...
- Q Classical Mechanics problem:See if you can prove the so-called virial theorem. This is astatement that relates the average kinetic energy of a stablesystem to the potential energy of the system....
- Q (Please explain briefly)A frictionless plane is 10.0 m long and inclined at28.0°. A sled starts at the bottom with an initial speed of 5.70m/s up the incline. When the sled...
- Q A satellite is placed in an elongated elliptical (not circular)orbit around the Earth. At the point in its orbit where it isclosest to the Earth, it is a distance of...
- Q Hi,For an electron in a cylindrical box, how do we find theHamiltonian operator?
- Q The figure shows a cross section across a long cylindricalconductor of radius a = 2.97 cm carrying uniform current 27.5 A.What is the magnitude of the current's magnetic field at...
- Q Some fusion reactors use an induction process in which thermalneutrons collide with deuterium particles that are essentiallytwice as massive (consisting of one proton and one neutron).Consider a scenario in which...
- Q What is phase space? And also what is relaxation time? (Thermodynamics)
- Q 1. What were the \"flying disks\" that crashed near Roswell, NM?Describe the formerly classified program that there were to be usedfor. Include the relevant physics.2. What did you hear about...
- Q Explain why equipotential surfaces are always perpendicular tothe electric field lines. Do equipotential surfaces everintersect?
- Q Charlie kicks a soccer ball up a small incline. On the way up,ball's acceleration has magnitudejaj = 0:45 m/s2 and is directed in downhill direction. Charliekicks the ball at the...
- Q For a fixed plate separation and voltage, what happens to thestored energy as the plates are brought closer together?IncreasesIt stays the sameDecreasesFor a fixed charge what happens to the capacitance...
- Q An electron is trapped in a square well of unknown width,L. It starts in unknown energy level, n. When itfalls to level n-1 it emits a photon of wavelengthλphoton =...
- Q Please write your work neatly so I could understand it3. A very long, straight line of charge runs parallel to a verylarge, planar sheet of charge. The 2 charge density...
- Q In a container of negligible mass, 4.20×10−2 kg ofsteam at 100°C and atmospheric pressure is added to 0.180 kg ofwater at 48.0°C.a) If no heat is lost to the surroundings,...
- Q The table below shows how much of the mass of the Sun and theEarth are made up of each element (by mass). Note that, for thisproblem, the amounts have been...
- Q The police use radar guns and the Doppler effect to catch violators. A police car is driving from right to left at 60 km/h, another man's car is approaching the...
- Q The height to which a ball bounces after being dropped providesa measure of how much energy is lost in the collision with thefloor or other surface. A small portion of...
- Q please answer all qustions and all parts and make sure you havethe right answers.1. An electric field is given by Ex =3.5x3 kN/C. Find the potential differencebetween the points on...
- Q 14. Students Norma Lee and Rangh are discussing force and motionas discussed in class.(The question didn't specify if the speed is constant ornot, please list both possibilities.) Norma is describingthe...
- Q A tetherball swings around a pole, making a full circle onceevery 2s. The total length of the rope is 2 m. Calculate the angleθ that the rope makes with the...
- Q Proof the equation of number of holes in VB at intrinsicSemiconductor
- Q in air track experiments, we assume that kinetic frictionbetween the ait track and the car is negligible. If friction is notnegligable, how would the friction affect each of the followingA)...
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