Physics question and answers for September 22, 2023
- Q How much difference is there between your apparent when standingon flat ground at the equator versus at the south pole? Versus at60 degree latitude? Assume Earth's radius is 6380 km....
- Q Together, a pure gold ring and a pure titanium ring have a massof 13.64 g.13.64 g. Both rings are heated to 85.6 °C85.6 °C anddropped into 11.0 mL11.0 mL of...
- Q A block with mass m = 6.1 kg is attached to two springs withspring constants kleft = 29 N/m and kright =48 N/m. The block is pulled a distance x...
- Q QUESTIONS Lab Determine the work and the power developed when wewalk up the stairs.Will the work increase, decrease or stay the same if weincrease the number of steps in the...
- Q The density of ice is 920 kg/m3. If an ice cube isput in a beaker of water collected from the Great Salt Lake itfloats with 80% of its volume submerged....
- Q A particle with positive charge q = 9.61 10-19 C moves with avelocity v = (3î + 4ĵ − k) m/s through a region where both auniform magnetic field and...
- Q A spherical rock (R= 19 cm, p=3350 kg/m^3) is attached to theend of a copper wire (diameter 3 mm, effective length of 1.21 m)and then revolved in a circular path...
- Q A long, clear, flexible tube is bent into a U shape (open atboth ends), and we pour water into it (density 1000 kg/m3) untilthe water reaches the same level on...
- Q A ring (4 kg, r = 2 m) rotates in a CW direction with initialangular velocity 20 s-1. A disk (8 kg, r = 2 m) rotates in a CCWdirection...
- Q I've been debating with a classmate about whether weight cause atorque on a sphere of uniform density on a friction-less incline.My perspective is that since the force of gravity acts...
- Q Hollywood often portrays bows as extremely lethal. In reality,however, they were being replaced by firearms on the battlefieldsof Europe already towards the end of the 100 years’ war(1337-1453). While all...
- Q A ring (mass 2 M, radius 1 R) rotates in a CCW direction with aninitial angular speed 2 ω. A disk (mass 4 M, radius 2 R) rotates ina CW...
- Q 1. Dark Energy(a) Why is dark energy \"dark\"? Why is it \"energy\"?(b) Give at least one way that dark energy is different fromdark matter. Also give at least one way...
- Q List the factors that comprise the image formation model.Describe each briefly.
- Q Jake asked Sally to draw a vector perpendicular to the vector4.0i - 6.0j +2.0k. Which vector would Sally draw?A) 1.0i-2.0j+1.0k B) 2.0i -3.0j +1.0k C) 2.0i+1.0k D) 1.0i+1.0j+1.0k E) 3.0i...
- Q A train car with mass m1 = 576 kg is moving to the right with aspeed of v1 = 7 m/s and collides with a second train car. The twocars...
- Q An object 0.800 cm tall is placed 16.5 cm to the left of thevertex of a concave spherical mirror having a radius of curvatureof 20.5 cm.A:Calculate the position of the...
- Q Water is flowing in the pipe shown in the figure below, with the7.70-cm diameter at point 1 tapering to 3.45 cm at point 2, locatedy = 11.5 cm below point...
- Q A disk of radius 14 cm and has a mass of 10 kg is attached to ahub which is adisk of mass 8 kg and radius 5cm. The disks are...
- Q Calculate the magnitude of the electricpotential difference across the length
- Q 9. A stainless steel tube having an outside diameter of 0.6 cmand a wall thickness of 0.05 cm is to be insulated with a materialhaving a thermal conductivity of 0.065...
- Q a) DERIVE the equation for the change in the free energy of aCYLINDRICAL nucleus heterogeneously forming from an existing phase.The nucleus grows with its circular base onthe mold wall and...
- Q Dark matter; C&O 24.22.(a) Assume that the density of dark matter in our Galaxy isgiven by Ï(r) = Ï0/(1+(r/a) ^2) . Show that the amount of darkmatter interior to a...
- Q Suppose that you decided to send a spacecraft to Neptune using aHohmann transfer. The craft starts in a circular orbit close to theEarth (1 AU) and is to end up...
- Q There are plenty of Internet trolls that think our cars don’thandle well. They’re wrong. And besides, everyone knows the fastestway between two points is a straight line.The fastest time ever...
- Q SCENERIO: You are working for a humanitarianaid agency that plans to air-drop supplies into a war-torn region.The political landscape is such that in order to reach thecivilians in need –...
- Q Compare the green house effect on Earth to Venus then discusstwo similarities and two differences in the green house effectbetween Earth and Venus.
- Q Indicate whether each quantity increases, decreases, or remainsthe same for the situation being described: The number of particlesand volume are held constant and the gas is cooled    -    ...
- Q Ifa curve with a radius of 81 m is properlyacurve of a radius 74 m is banked for a design speed of 100 km/h ifthe coefficient of static friction is...
- Q How many possible directions are there for thefrictional force?Physicists categorize the frictional force according tothe relative motion between the two surfaces. What are some of thecategories?One category of frictional forces...
- Q In an experiment, 426 g of water is in a copper calorimeter cupof mass 205 g. The cup and the water are at an initial temperatureof 10.9 oC. An unknown...
- Q Discuss the general design of light and heavy waterreactors
- Q Three children are riding on the edge of a merry-go-round thatis 122 kg, has a 1.60 m radius, and is spinning at 17.3 rpm. Thechildren have masses of 19.9, 29.5,...
- Q A 425 kg satellite is in a circular orbit at an altitude of 400km above the Earth's surface. Because of air friction, thesatellite eventually falls to the Earth's surface, where...
- Q What is the magnitude of the tangential acceleration of a bug onthe rim of a 12.5-in.-diameter disk if the disk acceleratesuniformly from rest to an angular speed of 75.0 rev/min...
- Q 1-What is the expression for the thin lens equation? Define allthe terms in the expression.2-Describe the three properties that determine the focal lengthof a lens.3-Define the following:i. Converging lens______ii. Diverging...
- Q 1. Explain the difference between an elastic and inelasticcollision.2. How many times more energy is required to increase the speedof a 2200 pound car by 10 mph if car initially...
- Q Identify and briefly describe the five key components of the“scientific methodâ€
- Q uranium-235 is used in a nuclear power plant as fuelsource because
- Q 1)Two newly discovered planets follow circular orbits around astar in a distant part of the galaxy. The orbital speeds of theplanets are determined to be 39.7 km/s and 53.7 km/s....
- Q why does a satellite in a circular orbit travel at a constantspeed (choose all that apply)a. there is no force acting along the direction of motion of thesatelliteb. the only...
- Q A manufacturer produces either edible honeycomb orhoney from the raw honeycomb harvested from the beehives. Toproduce edible honeycomb, raw honeycomb is fed to a cutter thatproduces 30 edible combs per...
- Q A block having a mass of 10.0 kg is pressed against the wall bya hand exerting a force F inclined at an angle θ of 52° to the wallas shown...
- Q (c) Powder diffraction experiment:The incident wavelength of a neutron beam is λ = 2.662 Å. Thedistance between adjacent atoms in a simple cubic crystal structureis 3.26 Å. Calculate the scattering...
- Q A 15.0-L tank containing 1.0 mol of argon gas is at 298 K.(a) Calculate the initial pressure of the gas and d, the lengthof the cube containing this volume.(b) Using...
- Q A proton, moving with a velocity ofviî, collides elastically withanother proton that is initially at rest. Assuming that after thecollision the speed of the initially moving proton is 1.40 timesthe...
- Q Steam at 100°C is added to ice at 0°C.(a) Find the amount of ice melted and the finaltemperature when the mass of steam is 13.0 g and the massof ice is 45.0 g. g °C(b) Repeat...
- Q The sketch below is a free-body diagram (with all the forcesshown) of a bridge. The distance are each 800 cm along the bottomeof the bridge, \"RL\" to \"A\", \"A\" to...
- Q As a city planner, you receive complaints from local residentsabout the safety of nearby roads and streets. One complaintconcerns a stop sign at the corner of Pine Street and 1st...
- Q Consider three identical metal spheres, A, B, and C. Sphere Acarries a charge of +2q. Sphere B carries a charge of+3q. Sphere C carries no net charge. Spheres A and...
- Q A horizontal block-spring system with the block on africtionless surface has total mechanical energy E = 56.0J and a maximum displacement from equilibrium of 0.258 m.(a) What is the spring...
- Q A cue ball traveling at 5.0 m/s makes a glancing, elasticcollision with a target ball of equal mass that is initially atrest. The cue ball is deflected so that it...
- Q One billiard ball is shot east at 1.8 m/s . A second, identicalbilliard ball is shot west at 1.1 m/s . The balls have a glancingcollision, not a head-on collision,...
- Q suppose you conduct an experiment where you shine plane waves oflight through a small slit. how would the intensity graph of thisexperiment differ than that of a double slit of...
- Q The CM of an empty 1000-kg car is 2.45 m behind the front of thecar. How far from the front of the car will the CM be when twopeople sit...
- Q A bullet of mass 1.7×10−3 kg embeds itself in a wooden blockwith mass 0.980 kg , which then compresses a spring (k = 160 N/m )by a distance 6.0×10−2 m...
- Q Can you give me an example of translationalequilibrium without rotational equilibrium?I also need an example of rotational equilibrium withouttranslational equilibrium. Thanks!
- Q A 60.0-g object connected to a spring with a force constant of40.0 N/m oscillates with an amplitude of 7.00 cm on a frictionless,horizontal surface.(a) Find the total energy of the...
- Q Two wheels have the same mass and radius of 4.9 kg and 0.41 m,respectively. One has (a) the shape of a hoop and the other (b) theshape of a solid...
- Q A torsion pendulum is made from a disk of mass m = 6.6 kg andradius R = 0.66 m. A force of F = 44.8 N exerted on the edge...
- Q At 20 ° C a mineral solid in the air weighed 482.5 g and 453.8 gwhen immersed in water.1)Calculate the absolute density and relative density inwater.2)If the density of benzene,...
- Q 1) A string trimmer is a tool for cutting grass and weeds; itutilizes a length of nylon \"string\" that rotates about an axisperpendicular to one end of the string. The...
- Q 1.Write a brief definition of the three different modes ofheat transfer. Give example for each one of the modes.2. What is entropy? How is the entropy of the universe changedwhen...
- Q Over a spatial continuum, it is easy to see why some topologicalsolitons like vortices and monopoles have to be stable. For similarreasons, Skyrmions also have to be stable, with a...
- Q A small solid sphere of mass M0, of radiusR0, and of uniform density Ï0 is placed in alarge bowl containing water. It floats and the level of the waterin the...
- Q Microwave communication is important for modern informationtechnologies. Your cellphone uses at least three microwavecommunication technologies: the mobile signal, the WiFi signal, andthe GPS location service. Google for the frequency bands...
- Q b) Determine the force the sun exerts on a kilogram of water onthe earth’s surface at a point nearest the sun and at a pointfarthest from the sun. (c) Do...
- Q a) Kinetic theory. The speed of sound in theair is 330 m/s under standard conditions of temperature andpressure (273 K and 1 atm). Since the size of a molecule is...
- Q A 50.0-kg woman stands at the rim of a horizontal turntablehaving a moment of inertia of 420 kg · m2 and a radiusof 2.00 m. The turntable is initially at...
- Q A hockey puck of mass 0.44 kg is shot west at 2.50 m/s strikes asecond puck, initially at rest, of mass 0.50 kg. As a result of thecollision, the first...
- Q A uniform 5-m long ladder weighing 80 N leans against africtionless vertical wall. The foot of the ladder is 1 m fromthe wall. What is the minimum coefficient...
- Q Here we will look at an example of subatomic elastic collisions.High-speed neutrons are produced in a nuclear reactor duringnuclear fission processes. Before a neutron can trigger additionalfissions, it has to...
- Q White light (ranging in wavelengths from 380 to 750 nm) isincident on a metal with work function Wo = 2.68 eV.1. For what range of wavelengths (from lmin tolmax) will...
- Q In a series of experiments, a gas of exotic molecules containingexactly one electroneach is investigated. It is found that:• When the gas is cold (so all the molecules are in...
- Q A disk with a c value of 1/2, a mass of 3 kg, and radius of 0.29meters, rolls without slipping down an incline with has a length of6 meters and...
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