Physics question and answers for August 15, 2023
- Q Prove(a) that ψ ± = N (x ± iy)f(r) is an eigenfunction of L^2 and Lz andset the eigenvalues corresponding.(b) Construct a wave function ψ_0(r) that is an eigenfunction of...
- Q A small spherical insulator of mass 5.49 × 10-2 kg and charge+0.600 μC is hung by a thin wire of negligible mass. A charge of-0.900 μC is held 0.150 m...
- Q xAn eagle is flying horizontally at 5.3 m/s with a fish in itsclaws. It accidentally drops the fish. (a) Howmuch time passes before the fish's speed doubles?(b) How much additional...
- Q Three charges, + 34 uC, - 34 uC and + 34 uC are placed at A(0,5cm), B (5cm,0), C(-5cm,0). Calculate the potential energy ofthe whole system of charges.
- Q A vertical axis rotational apparatus shown is the apparatus weused in Laboratory. The apparatus has low friction, low massrotating bracket that holds a disk. The disk has a diameter of...
- Q Thermal Storage Solar heating of a house ismuch more efficient if there is a way to store the thermal energycollected during the day to warm the house at night. Suppose...
- Q 1: A) Starting with two slits, separated by a distance \"d,\"derive the key relation(s) associated with locating interferencepatterns.B) Explain the effect on interference patterns if the number ofslits is increased...
- Q A ball is thrown into a bathtub full of water. The ball has amass of 0.5 kg and a diameter of 0.22 m. The density of water is1000 kg/m3 ....
- Q The following two waves are sent in opposite directions on ahorizontal string so as to create a standing wave in a verticalplane: y1(x, t) = (7.60 mm) sin(4.80Ï€x - 520Ï€t)...
- Q Consider a two-dimensional hexagonal lattice:(a) Draw the free electron Fermi surface in the reduced zonescheme when the lattice points are occupied by atoms with: i. Onevalence electron/atom. ii. Two valence...
- Q A particle of mass m is constrained to a circle of radiusr0: that is, the potential for the particle is 0 whentheparticle is anywhere on that circle and infinite everywhereelse,?(?)...
- Q Elastic Collision lab. I'm trying to calculate velocity,momentum, and kinetic energy in an elastic collision. The data Ihave is this. I tried using these numbers to calculate velocity andmomentum but...
- Q If we recreated the scene from Fast & Furious 7 and droppeda Challenger SRT® Hellcat Redeye Widebody from a C-130 aircraft at5,280 ft, how much horsepower would it take to...
- Q A 3000 kg minivan moving east at velocity 45 km/h collides witha 1000 kg car moving north atvelocity 55 km/h. The two cars lock together, find their velocityin km/h just...
- Q The conservation of charge in an electric circuit is closelyrelated to which of the following?Group of answer choicesOhm's lawKirchhoff's junction ruleKirchhoff's loop ruleNewton's lawsAmpère's law
- Q The galaxy that contains our solar system, the milky way, isapproximately a uniform disc of mass 10^12Msun and diameter175×10^3 light years. Assuming that the center of mass of thegalaxy is...
- Q If the mass of the ice in the test tube ism_ice=15gmass of warm water used (g) = 70gInitial temperature of water (in degrees C ) =70CEquilibrium temperature of ice-water system...
- Q The cube in the figure below has 5 sides grounded and the otherside is held at a potential Vo. What is the potential at the centerof the cube?Side note: I...
- Q Two charges each +q are initially separated by a distance d. Ifyou triple the distance, the magnitude of the force does what?
- Q A 750-g disk sliding along frictionless ice with a speed of 8.5m/s strikes a stationary rod-disk combo 12-cm from itscenter-of-mass. This rod-disk combo is made from a 360-g rod thatis...
- Q Explain the Enzyme-Based sensors for the assay of glucose.Discuss the reaction mechanism too. Explain in detail workingprinciple with the chemical reactions involved in thismeasurement.
- Q Anideal gas having a volume of 1.0 liters at 40c and a gauge pressureof 1.0 arm is heated until it's volume is 1.5 liters and its vaguepressure is 1.2 arm....
- Q The acceleration of a 5.00 kg object (a box) is describedbelow.From t=0 to 10.00 seconds, the acceleration is time-dependentand is given by the formula: a=(0.200 m/s^3) tFrom time t= 10.00...
- Q Assume that the speed of the ball is what you found the inprevious question. What is the tension force in the rope when theball is the bottom of its circular...
- Q What is the energy required to turn 1000 cubic centimeters ofice at -10 degrees Celsius into water at 90 degrees Celsius
- Q A professional boxer hits his opponent with a 1345-N horizontalblow that lasts for 0.122 s.a) Calculate the impulse (in kg · m/s) imparted by thisblow.b) What is the opponent's final...
- Q Define and describe four ways in which fluorescence excitationis more sensitive than optical absorption.
- Q A thin rod consists of two parts joined together. One-fourth ofit is silver and three-fourths is gold. The temperature decreasesby 22 C°. ΔL/(L0,Silver + L0,Gold) Determine the fractionaldecrease in the...
- Q A point charge of -2.5 µC is located at the origin. A secondpoint charge of 11 µC is at x = 1 m, y = 0.5 m.Find the x and...
- Q What are the 3 types of boundary effects and give a basicdescription of each?
- Q Two resistors, R1 = 20-ohm and R2 = 30-ohm, are connected inparallel to each other, and this combination is connected across a30-V source of emf. The current through the resistor...
- Q Explain the differences between primary electrons, secondaryelectrons, Auger electrons, and backscattered electrons and howthey are used in SEM imaging and analysis.
- Q Consider an experiment with a beam of relativistic particleshitting a target. Show that the cross-sectional area perpendicularto the direction of the beam propagation is a relativisticinvariant.
- Q Briefly explain the following terms in a few sentences:a. Resolution of optical microscopyb. Langmuir versus Langmuir-Blodgett (LB) filmc. The wavelength of electrons at an acceleration voltage of 100kVd. Chemically amplified...
- Q Workers have loaded a delivery truck in such a way that itscenter of gravity is only slightly forward of the rear axle, asshown in the figure. The mass of the...
- Q A block of mass m1 = 6 kg on a rough 30°-inclined plane isconnected to a 4-kg mass (m2) by a string of negligible masspassing over a pulley shaped like...
- Q The cart rolls down an incline. The launcher fires the ball in adirection perpendicular to the cart. Show that the ball lands backin the cart.
- Q I need to make a final grade 12 physics presentation abouteverything that i have learned, it can be anythingthe question: Describe what you learned in every unit andwhether or not...
- Q Describe the evolution of a 20 M⊙ star. A H-R diagram must bedrawn, and key aspects must be described in detail. Highlight howthe star’s evolution will differ from that of...
- Q We have a simple harmonic motion that is described by theequation: ? (?) = 0.82cos (0.4? + 0.2) Determine the equation of v(t) and a (t).
- Q Please answer these questions:1) A man stands on the edge of the roof of a 15.0-m tallbuilding and throws a rock with a speed of 30.0 m/s at an angle...
- Q Consider an electron at a distance of 0.053 nm from a proton.Take the origin of coordinates to be at the position of the proton.Let the electron be undergoing uniform circular...
- Q Twoblocks of masses m1= 2.00 kgand m2= 4.10 kg are released from restat a height of h= 4.40 m on a frictionless track. When they meet onthe level portion of...
- Q A stick is resting on a concrete step with 1/6 of its totallength ? hanging over the edge. A single ladybug lands on the endof the stick hanging over the...
- Q According to the Faraday effect, it responds:a) Explain what it is.b) Find the index of refraction for right and left circularpolarized light.c) Determine the Verdet constant.d) explain how it can...
- Q Describe the process of convolving an image with a mask(kernel). How could the process be implemented in the (spatial)frequency domain?
- Q Show that Maxwell's displacement current must be introduced tosatisfy continuity equation using Gauss' Law, Ampere-Maxwell lawand the fact that divergence of a curl of a vector is 0.
- Q Using plane waves, find the Fresnel and Snell formulas.(Reflection and refraction) Show that in a vacuum plane wavespropagate orthogonally to each other, and are transverse to thedirection of propagation.
- Q •• A meter stick is moving with speed relative to a frame S. (a)What is the stick’s length, as measured by observers in S, if thestick is parallel to its...
- Q I need a proper solution for this question ( well explained andunderstandable writing)Charged particles from outer space, called cosmic rays, strikethe Earth more frequently near the poles than near the...
- Q A 75 kg mountain climber hangs stationary from a bungee cordover a steep incline of 80â—¦ (nearly a vertical wall). The bungeecord has a Hooke constant of k = 550...
- Q What were the factors that caused the Johnstown Flood?
- Q In an Otto cycle air is compressed from an initialpressure 120 kPa and temperature 370 T (K). The cycle hascompression ratio of 10. In the constant volume heat additionprocess 1000...
- Q explain physics (physical quantities) involved in driving a car.please go into as much detail as possible.
- Q .What is the significance of the greater DQE of the digital imagereceptor? How is this reflected in the image receptor respond? (2points)
- Q Write down Maxwell’s equations in differential and integral formand explain the physics behind each one of them. Modify one of themto account for the existence of magnetic monopoles.
- Q Suppose you fire a projectile straight up from the Earth’s NorthPole with a speed of 10.5km/s. Ignore air resistance. (a) How farfrom the center of the Earth does the projectile...
- Q The charges and coordinates of two charged particles held fixedin the xy plane are: q1=1.40 μC, x1=-5.100 cm,y1=7.200 cm, and q2=9.00 μC, x2=-5.215cm, y2=10.498 cm, Find the magnitude anddirection of...
- Q A 1700 kg car moving east at 17 m/s collides with a 1800 kg carmoving south at 20 m/s, and the two cars stick together. Considereast the positive x-direction and...
- Q Is there any relationship between electrostatic force, distance,and charge? Please explain.
- Q A solenoid with 2000 turns/meter is connected to a power sourcethat delivers an increasing current i60t^2 Ampere.The solenoid hasa length of 0.2 m and a radius of 0.05 m.a.what is...
- 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 Lever classExampleForceAxisResistanceAdvantage provided1st1st2nd2nd3rd3rdDetermine and list two practical examples of levers (in the bodyor daily living) for each lever class. Do not use examples alreadydiscussed in this chapter. For each example...
- Q A 30 m long pipe with an outside diameter of 75 mm isused to deliver steam at a rate of 2000 kg / hour. The vaporpressure is 198.53 kPa entering...
- Q What do isodeformation conditions in composite materials meanand describe the rule ofmixtures for binary compounds.
- Q A 7 nC charge is located at the origin (0,0) cm and another 4 nCcharge is located at (5,0) cm. What would be the net electric fieldat a point (5,...
- Q An explosion breaks an object into two pieces, one of which has2.30 times the mass of the other. If 7700 J were released in theexplosion, how much kinetic energy did...
- Q You are given a vector in the xy plane that has a magnitude of89.0 units and a y component of -60.0 units.What are the two possibilities for its x component?Assuming...
- Q If we dropped a Challenger SRT® Hellcat Redeye Widebody from aC-130 aircraft at 5,280 ft, how much horsepower would it take todrive past it before it hits the ground if...
- Q A hollow aluminum cylinder 24.5 cm deep has an internal capacityof 2.000 L at 17.0°C. It is completely filled with turpentine at17.0°C. The turpentine and the aluminum cylinder are then...
- Q a) A treasure map gives the following directions: (1) Walk fiftymeters at 30 degrees north or east from the old oak tree. (2) Turn45 degrees to your left (you should...
- Q Calculate the binding energy per nucleon for 55Mn, 9Be, 14N, and7Li. (For the atomic masses, see this table. Enter your answers toat least two decimal places.) (a) 55Mn MeV/nucleon (b)...
- Q Let's use the Bohr model equations to explore some properties ofthe hydrogen atom. We will determine the kinetic, potential, andtotal energies of the hydrogen atom in the n=2 state, andfind...
- Q 14.4 15.0 L of an ideal monatomic gas at 3.00 atm and 450 K arecontained in a cylinder with a piston. The gas first coolsisochorically to 270 K (step 1)....
- Q Using Ampere’s law derive the formula for the magnetic fieldfor the infinitely long solenoid of radius R.
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