Physics question and answers for July 26, 2023
- Q Explain how light is produced in the fluorescent light tubeabout your head using the quantum theory model.TYY!!!
- Q A solid sphere of mass 0.750 kg and radius 5.00 cm is spun up toan angular velocity 10.0 rad/s. The sphere is dropped from a lowheight onto a flat platform...
- Q Suppose the biceps were surgically reattached three centimetersfarther toward the person's hand. If the same bowling ball wereagain held in the person's hand, how would the force required forthe biceps...
- Q 1.a)What does the author feels is music? What do you considered tobe music?b)How does surround sound work?c)Does it depend where you are in a room for surround sound towork?d)Why can...
- Q A voltage source, Vs = 180sin760t is in series with an inductorL = 435 mH, a capacitor C = 2 μF, and a resistor R = 240 Ω.c) What is...
- Q A1200 kg cannon mounted on wheels shoots a 10kg projectile a with amuzzle speed of 725m\s at an angle of 36 degrees above thehorizontal. What is the horizontal recoil speed...
- Q You are considering installing a photovoltaic (PV) system on theroof of your one-storey home. Discuss four (4) factors that need tobe taken into consideration with the installation of a PV...
- Q ?⃗ = (2?)?̂− (3?)?̂?⃗⃗ = (1?)?̂− (2?)?̂Finda) ?⃗ − 2?⃗⃗b) ?⃗ ∙ ?⃗⃗c) ?⃗ × ?⃗⃗d) Angle between ?⃗ and ?⃗⃗
- Q A pipe transporting a fluid has an internal diameter of 5.0 m.The fluid has a flow rate of 5.00 × 10−2 m3 /s and a viscosity of1.00 × 10−3 N/m2...
- Q An object is formed by attaching a uniform, thin rod with a massof mr = 7.04 kg and length L = 5.16 m to a uniform sphere with massms =...
- Q what are the requirements for a solid ionic conductor?provide an example to aid your explanation
- Q In technical normal state air the initial phase of a 310Hzfrequency, 0.07Pa sound pressure amplitude free, plane wavetraveling in +x direction is 60degree. Determine the sound pressurein the sound field...
- Q A mass hangs from the ceiling by a spring. It takes the mass 700ms to fall from its maximum height of 2.3m to its minimum height of1.6m above the floor.(a)...
- Q A box of weight 120 N sits on a level surface. It is initiallyat rest. The coefficient of kinetic friction is 0.30 and thecoefficient of static friction is 0.50. A...
- Q 1. When you throw a pebble straight up with initial speedV, it reaches a maximum height H with no airresistance. At what speed should you throw it up vertically so...
- Q We are looking down at a film at 90 deg, and a shining orangelight with a wavelength(vacuum) of 710 nm is on the film. It has arefractive index of n...
- Q Three resistors have values R1= 47Ω, R2 = 100Ω, and R3 = 10 Ω.There is a 1.5V battery. The battery and three resistors are allconnected in various circuits described below....
- Q Explain how an experiment of a baseball rolling down a hillwould be related to Angular Momentum Principle.
- Q Part 1.When a vehicle is passing through the atmosphere, at some point itmay decelerate at a rate of 49.2 m/s2 (away from thecentre of Earth) while Earth's gravitational pull remains...
- Q You are in charge of designing a catapult that must launch arock of mass m using a single spring that can only becompressed a distance x. The catapult’s target is...
- Q 1.what is the angular separation (between a grating and screen) ofthe second order maximums produced by 420nm and 300 nm wavelengthsincident upon a 450 lines/mm diffraction grating2.Boron nitride (a lubricant)...
- Q The depth of the water body is 2 meters.(a) There shall be a light source at the bottom of the body ofwater, a disc of opaque material floating on thethe...
- Q (a) Suppose a meter stick made of steel and one made of invarare the same length at 0°C. What is their difference in length at45.0°C? The coefficient of thermal expansion...
- Q Boxes A 7.00 kg and B 15.00 kg , to the right of Amove on a frictionless, horizontal surface. Box B is traveling tothe left at 0.500 m/s, and box...
- Q If you had two solenoids of identical wire and number of turnper unit length, but different radial size, what would you expectto find if you measured the magnetic field inside...
- Q Boxes  A ( 5.00 kg ) and B( 14.00 kg , to the right ofA) move on a frictionless, horizontal surface. Box BBis travelingto the left at 0.500 m/s, and box...
- Q You are designing a slide for a water park. In a sittingposition, park guests slide a vertical distance h down thewater-slide, which has negligible friction. When they reach thebottom of...
- Q What is the gain material and its phase, typical pumping method,typical output power, and efficiency for laser of your choiceproducing tunable visible light?
- Q Daniel with mass 65.0 kg and Rebecca with mass 45.0 kg areskating. While Daniel stands at rest, He is struck by Rebecca. Sheis moving at 13.0 m/s before she collides...
- Q A box with mass 0.0325 kg moves in a vertical circle that has aradius of 0.600 m on the inside of a circular track. When the boxis at the bottom...
- Q Two long parallel wires 20 cm apart carry currents of 5.0 A and8.0 A in opposite directions. At what point is the net magneticfield due to the two of them...
- Q 8. Refer to the previous problem. The parent particle moves inthe lab with kinetic energy 800 MeV, and one daughter particle isemitted along the parent’s direction of motion. Find the...
- Q Assume that a certain billionaire innovator misplaced hissupercar and finds it launched into a high-earth orbit at a heightof 15 000 km above the Earth’s surface. Wondering if he left...
- Q In a shooting field where noone can get hurt, there is avertical square plastic board, 0.100 m on a side and with mass0.800 kg , that rotates on a horizontal...
- Q 1. Imagine that you’re sledding alone down a steep hill on atoboggan and that you left the top of the hill at the same time asan identical toboggan, loaded with...
- Q A small block with mass 0.0400 kg slides in a vertical circle ofradius 0.500 m on the inside of a circular track. During one of therevolutions of the block, when...
- Q 5 kg of saturated water mixture in a rigid container initiallyat the standard pressure (state 1) is heated at constant volumeto apressure of 35 MPa (state 2). This heating is...
- Q Is your electric blanket safe? It has been theorized that excessnighttime exposure to electromagnetic fields may reduce theproduction of the hormone melatonin in certain women. Furthermore,reduced melatonin levels might lead...
- Q Gaseous calcium atoms absorb light at 423, 272, and 240 nm.After a photon of 272 nm is absorbed from the ground state, aphoton of wavelength 672 nm is emitted. After...
- Q A long, uniform rod of length  0.500 mm and isrotating in a circle on a frictionless table. The axis of rotationis perpendicular to the length of the rod at one end...
- Q A square plastic chunk with mass 0.750 kg is suspended from thelower end of a light cord that is 1.66 mm long. The plastic chunkis stay still in the beginning...
- Q 32.) In the plane of a square conducting frame with the sides a=8cm, there is an infinite long wire in a distance b= 0.5cm parallelwith one side of the square....
- Q Consider a harmonic electromagnetic plane wave with angularfrequency ω and propagation vector k=(kx,ky,kz) (i.e., propagatingin an arbitrary direction). The electric field vector isE=(Ex,Ey,Ez) with amplitudes (Exo,Eyo,Ezo) and the magnetic fieldvector...
- Q A football receiver running straight downfield at 5.50 m/s is10.0 m in front of thequarterback when a pass is thrown downfield at 25.0 degree abovethe horizon. If thereceiver never changes...
- Q a rocket rises vertically from rest, with anacceleration of 3.2 m/s(s) until it runs out of fuel at an altitudeof 845 m. After this point, its acceleration is that of...
- Q A uniform magnetic field B is directed into the page.A circular circuit of radius r containing aresistor R and a capacitor C, is placed in this field. Initiallythe capacitor is...
- Q A mass spectrometer is designed to calculate masses ofatoms. A source produces positive ions ofmass m and charge q. The ions move with a velocity v to the right,pass through...
- Q A family on vacation in San Francisco drives from Golden GatePark due south on 19th Avenue for 2.2 miles and then turns west onSloat Boulevard and drives an additional 1.1...
- Q The initial temperature of the lake at the edge of the mountain glacier is 6.40'C, and the volume of water is 185,000m^3. There is iceberg which the mass is 17.3*10^6kg,...
- Q Kristi Yamaguchi a former figure skater who is the 1992Olympic Champian, a two-time World Champian and 1992 US Champion.In her 1992 Long Program, she made a sharp turn with a...
- Q A uniform stick, mass m and length l, is placed in a horizontalplane by hanging it from a massless string attached to the center.A ball of mass M moving with...
- Q A thin, circular disk of radius R = 30 cm is oriented in theyz-plane with its center as the origin. The disk carries a totalcharge Q = +3 μC distributed...
- Q A river 16.0 m wide and 4.0 m deep drains a 3000.0 km2 land areain which the average precipitation is 48 cm/year. One-fourth ofthis rainfall returns to the atmosphere by...
- Q A 248 nC point charge is at co-ordinate (0, 0.2) . A 85 nCcharge is at (0, -0.2). Find the electrostatic field at (0.4,-0.7). The Coulomb constant is k =...
- Q An electron of charge q = -c is first traveling perpendicular toa constant electric field. Illustrate a diagram depicting thetrajectory of the electron, and name the shape of the trajectory(whether...
- Q Explain Planck's hypothesis and Bohr's model and how these ideasshaped our modern understanding of the structure of the atom.
- Q Prove that Maxwell’s equations yield the wave equation for theelectric field [HINT: ∇ × (∇× ) = ∇(∇·) − ∇ · ∇]
- Q 1. Write the Schrodinger equation for particle on a ring, andrearrange it until you have the following: ? 2? ??2 = − 2?? ℠2 ?…a) Assuming that ?? 2...
- Q 1 Larmor radius and gyration frequency (10 P) Calculate theLarmor radius and the gyration frequency (4 P) for:1. An electron in the Earth’s ionosphere at 300 km altitude,where the magnetic...
- Q 1. When a radioactive element decays, it is because the balanceof neutrons and protons inside the nucleus was unstable. Explainwhat happens in each of these kinds of decay to make...
- Q As a result of federal laws and the 14th amendment to the usconstitution federal courts _________
- Q A 674-kg elevator starts from rest and moves upward for 2.90 swith constant acceleration until it reaches its cruising speed,1.80 m/s.(a) What is the average power of the elevator motor...
- Q Calculate the binding energy per nucleon for each of thefollowing nuclei. (Use the table of atomic masses asnecessary.)(a) 2H(MeV)(b) 14N(MeV)(c) 23Na( MeV)(d) 32S(MeV)
- Q This week we are learning about atomic physics. At some point wetalked about photons. Do some research about photons and share yourfindings with your group about photons, what they are,...
- Q One speaker A is located in origin and another speaker B islocated at point (3.0),the units in the xy plane measure in meters and the speakers arethe same. At a...
- Q Moana is a sailing from her home to a nearby island which is 215miles north and 33 miles west. There is a constant ocean current of0.50 knots moving from west...
- Q A geostationary satellite is in a circular orbit around theEarth. What is the linear speed of the satellite?
- Q Radioactive waste can remain dangerous for a hundred thousandyears. GE Hitachi created a new power plant that can useradioactive waste and reduce the storage requirements to 300 years.In GEH’s view,...
- Q 1. For each part, select the best underlined option, thenexplain why it is the best. If you want to keep a hot beverage hotas long as possible, should you:a. Store...
- Q Badminton (True or False)The doubles service court consists of the same area as thesingles service court.In doubles play, a long high serve is the best serve.Rally point scoring seems to...
- Q why do we see different colors come out when all thecolors of white light enter the drop? explain not only what happensbut whyexplain why there is a second rainbow further...
- Q A standard flashlight battery can deliver about 4.9 W·h ofenergy before it runs down. (a) If a battery costs80 cents, what is the cost in dollars of operating a 100...
- Q Topic 4: Echo Sounder and Speed Logs:According to your Knowledge, answer the following questions:(Within 600 words)a. In Echo sounder systems some devices has one transducer(transmitting and receiving transducerin one unit)...
- Q Suppose you throw a ball into the air. Do you think it takeslonger to reach its maximum height or to fall back to earth fromits maximum height? We will solve...
- Q A string is wrapped around a pulley with a radius of 2.0 cm andno appreciable friction in its axle. The pulley is initially notturning. A constant force of 50 N...
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