Physics question and answers for August 17, 2023
- Q A 78.5kg ice hockey goalie, originally at rest, catches a0.120kg hockey puck slapped at him at a velocity of 36 m/s. Supposethe goalie and the ice puck have an elastic...
- Q Draw an illustration of the problems including thegiven & required data. Show the complete solution in legiblehandwriting.1. A 64.80 g ball was fired into a 185.00 g ballisticpendulum hanging 7.10...
- Q a) Use a diagram and short comments to contrast the generalproperties of Fraunhofer and Fresnel Diffraction.b) Show how a simple positive lens made from glass with normaldispersion has chromatic aberration....
- Q Explain what illusory motion is and discuss the different formsof it
- Q The CO microwave spectrum has lines at 0.86 nm, 1.29 nm, and2.59 nm.a) What transitions do these lines correspond to?b) What is the bond lenght of this molecule?
- Q Is about Statistical mechanics:a) Find the thermodynamic potentials of the ideal gas in itsnatural variables, in the representation of energy and entropic.Hint: Make use of the Sackur-etrode equationb) Is it...
- Q A liquid mixture of benzene-toluene is to be distilled in afractionating tower at 101.3 kPa pressure. The feed of 100 kg mol/his liquid, containing 45 mol benzene and 55 mol%...
- Q The concentration of oxygen inside a 5000 L tank at 1 atm is toreduced by pressure purging prior to charging a fuel into the tank.The tank is charged with nitrogen...
- Q 1.A 70kg person stands on a scale in an elevatora) what does the scale read in kg when the elevator is atrestb) what does the scale read in N when...
- Q Classical Mechanics problem:Suppose you are on a perfectly spherical planet and measure thefree-fall acceleration to be g = g0 at the North Pole.(This planet is not necessarily Earth!) At the...
- Q PHYS/BIOL 464 Medical ImagingInstrumentationMRI HW 7A1.During the magnetic resonance relaxation process after a 90°pulse:A, Longitudinal magnetization increasesB. Transverse magnetization increasesC. Proton density increases2. T1 and T2 values depend on:A. Voxel...
- Q Two loudspeakers, 1.1 mm apart, emit sound waves with the samefrequency along the positive xx-axis. Victor, standing on the axisto the right of the speakers, hears no sound. As the...
- Q Explain the liquid junction potential in the electrochemicalcells. Propose a suitable solution for this problem.
- Q List all graphical representation that is used in watershedmanegment, water quality treatment, lake water analysis, and riverwater analysis.
- Q In recent times the principle of the Michelson intereferometeris being used in an attempt to detect gravitational waves (LIGOexperiment). A successful measurement requires an accuracy of10-16cm. Assuming t hat the...
- Q Suppose you kept your accelerating voltage and coilcurrent constant. How would your circular beam change if we wereusing a proton beam instead of an electron beam? Explain yourreasoning.
- Q Equipment used:Thread, dense spherical mass like a marble or a bearing, perhapsabout 0.5 – 1.0 cm in diameter. Otherwise, use amass that is approximately spherical, e.g., a tangerine orapple.Method of...
- Q A block with a mass of 0.488 kg is attached to a spring ofspring constant 428 N/m. It is sitting at equilibrium. You thenpull the block down 5.10 cm from...
- Q A music fan at a swimming pool is listening to a radio on adiving platform. The radio is playing at a constant frequency tonewhen this person, clutching the portable radio,...
- Q Consider the “step†potential:​​​​ V(x) = 0 if x ≤ 0​​​​ = V0​​ if x ≥ 0(a) Calculate the reflection coefficient for the case E <V0 , and (b) for...
- Q A star with apparent visual magnitude mV = 3.5, absolutemagnitude MB = 2.0 has parallax of 0.03 arcseconds. Does this starlook red or blue in the sky? Estimate its spectral...
- Q Consider an optical fiber that has a 200-μm core diameter and a240-μm cladding diameter. (a) Show that the size of the active areain a bundle with two rings is 1.13...
- Q A 200 gram of ice block falls from a height of 80 meters onto abucket of 1 kg water in a copper bucket of mass 100 grams. Theinitial temperature of...
- Q 1. A block of mass m is sliding on a horizontal surface. Thekinetic coefficient of friction between the block and the surfaceis µk. The drag force is linear with speed(FD...
- Q A piano tuner hears a beat every 1.60 s when listening to a272.0 Hz tuning fork and a single piano string. What are the twopossible frequencies (in Hz) of the...
- Q The coordinates of an object moving in the XY planevary with time according to theequations  x = −7.43 sinωt and y = 4.00 − 7.43cos ωt,where ω is a constant, x...
- Q One of the particle accelator technologies is cycotron. Pleaseexplain principle contruction, working and limitations ofcycotron.
- Q Try out some of the principles of light by comparing Polaris tothe sun.a. The intensity of sunlight at a satellite in earth orbit is1360 W/m2. What is the magnitude of...
- Q What evidence do we have that spiral arms are regions of veryactive star formation? Give an answer that includes both nebulaeand stars. What colors do we see?In the context of...
- Q Â Â You pick up your older mobile phone to see who justsent you a text, but its dark ! Your sunglasses are blocking allpixels, all colors from your phone.a. Aha,...
- Q A wood burning stove is box shaped with a height of 30.7â€, width26.25†and depth 25.5â€. The front surface is glass (Ô= 0.9) and theother surfaces are cast iron (Ô=...
- Q When high voltage is run through hydrogen, light is emitted thatis concentrated in three areas of the visible spectrum: red, cyan,and violet. How did Bohr explain this, and how did...
- Q The figure shows an approximate plot of stress versus strain fora spider-web thread, out to the point of breaking at a strain of2.05. The vertical axis scale is set by...
- Q what is the power of a mirror in water (with index of refraction1.333) , if a lens-clock (with index of refraction 1.530) measuresthe surface power of the mirror to be...
- Q A. A disk of radius 0.15 m spins at a rate of18 rad/s. What is the linear speed of a point on its outer rim? Howlong does it take that...
- Q What is wave ? Differentiate between Longitudinal waveand Transverse wave. How can you generate both types of wave on aslinky? Write in detail
- Q 3. Interference: Consider the double slit experiment conductedin lab. You now have a new double slit slide to analyze. On thewall 1.75m away from the slits, the first minima occurs...
- Q Aspherical shell of radius a has a uniform surface charge density σand rotates with a constant angular velocity ω in relation to anaxis that passes through its center. In this...
- Q A -3.50 nC point charge is at the origin, and a second -5.50 nCpoint charge is on the x-axis at x = 0.800 mm.D) Find the net electric force that...
- Q a) The rotational characteristic energy E0r for thenitrogen molecule N2 is 2.48 x 10-4 eV. Findthe bond lenght of the molecule.b) Write the electronic configuration of this molecule.
- Q A solid cylinder is mounted above the ground with its axis ofrotation oriented horizontally. A rope is wound around the cylinderand its free end is attached to a block of...
- 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 What is the appropriate interplanar spacing which is needed todetect and analyze the (a)Fe K line and (b)Ti L line?
- Q (a) Describe the distinction between transverse andlongitudinal waves. Give an example of each type ofwave, describingthe disturbance in each case.(b) Describe why the frequency of a wave perceived byan observer...
- Q Light in a vacuum is incident on a transparent glass slab. Theangle of incidence is 37.0
- Q A beam of monochromatic green light is diffracted by a slit ofwidth 0.500 mm. The diffraction pattern forms on a wall 2.06 mbeyond the slit. The distance between the positions...
- Q You are just starting a new job as investigator for the carcollision investigation. You assist your superior in order todetermine, as accurately as possible, the circumstances surroundingcollisions (initial velocity of...
- Q A student is running at her top speed of 5m/s to catch a bus,which is stopped at a bus stop. When the student is still 80mbehind the bus, it starts...
- Q Use the slope of the graph of τ vs. square root of L tocalculate g and its uncertainty. δg = 2g δ (slope) Show yourworkwe should use m2=2buy/sqrtof y but...
- Q A 11.9-kg object oscillates at the end of a vertical spring thathas a spring constant of 1.80 ✕ 104 N/m. The effect ofair resistance is represented by the damping coefficientb...
- Q A body weighing 10 pounds forces hangs from a spring withconstant 4/5 lb / ft. The medium where the body moves it offers aresistance force to movement that is numerically...
- Q Describe the working principle of a Silicon Solar Cell.a) How the solar cell generates electricity? Describe n/pdoping, depletion region concepts.b) Describe the meaning of Fill Factor. How do you calculate...
- Q In a 250-word post, choose one or more of the topics listedbelow. to write about, include an active hyperlink to yourresource...Look for an article or news story/video that relates to...
- Q A wave pulse travels down a slinky. The mass of theslinky is m = 0.89 kg and is initially stretched to a length L =6.6 m. The wave pulse has...
- Q A 0.077-nm x-ray is incident on a stationary electron. Ascattered photon is observed at 102°. Find the energy of thescattered photon E'γ= keV and its wavelength λ'= nm. Find thekinetic...
- Q If the coefficient of static friction is 0.60, and the sameladder makes a 46° angle with respect to the horizontal, how faralong the length of the ladder can a 55.0-kg...
- Q A 1,000-kg car moving east at 90 km/h collides head-on with a1,500-kg car moving west at 50 km/h, and the two cars sticktogether. (a) Which way does the wreckage move...
- Q A 621-kg elevator starts from rest and moves upward for 3.20 swith constant acceleration until it reaches its cruising speed,1.65 m/s.(a) What is the average power of the elevator motor...
- Q Your younger brother is supposed to mow the lawn using a pushmower. He reasons from Newton's third Law that the mower will pushback with the same force he exerts on...
- Q A soap bubble is 95 nm thick and illuminated by white lightincident perpendicular to its surface.The longest wavelength in nm which is constructively reflected,assuming soap has the same index of...
- Q Consider our graphical analysis of the bound states in a finitesquare well of depth V0 and width a.Determinea) The condition on V0 and a that there isat most one bound...
- Q Construct the explicit form of the lowest three eigenfunctionsof the harmonic oscillator.
- Q List three unique meteorological features of SuperstormSandy
- Q Say the density of air is 1.23 kg/m3 and the density of heliumis 0.164 kg/m3 when both are at STP. Let's model a balloon as asphere of radius 0.12 m,...
- Q A plane wave of frequency 900 MHz is and trave ling along -ydirection with the electric field amplitude of 300 V/m (in vacuum).The value of electric field is -300 V...
- Q question about defibrillator.. Why you apply the shock. What is done when defibrillator. How defibrillator work. Then why we chose Biophasic
- Q A particular beam of light, with an intensity of 440W/m2, is linearly polarized at an angle of +5.00° to thevertical. You have three polarizers, which have their transmissionaxes aligned as...
- Q The velocity of a particle moving in the xy plane is given by,v=(5t-4.5t^2)i+8.3j with in meters per second and t (> 0) inseconds. At t = 2.4 s and in...
- Q Choose an isotope and describe its radioactive decayprocess and how it is used. Write a minimum of 150 words.
- Q A camera lens has a focal length of 100 mm (thick lens). Thephotographer first adjusts the location of the lens to look at anobject very far away (infinite distance). Then...
- Q A car is going at 11.2 m/s on a horizontal straight road. Whenthe traffic light is 30 m away, it turns red.The reaction time of the driver is 0.3 s.The...
- Q Steam locomotives have an efficiency of 18.0% and operate with ahot steam temperature of 425°C.(a) What would the cold reservoir temperature (in °C) be if thiswere a Carnot engine? °C(b)...
- Q The intensity pattern formed by a diffraction grating of N slitsiswhere θ is the angle of diffraction. The radiation reaches thegrating at normal incidence.Using the formula above and m =...
- Q Q2.a) Explain what is meant by diffraction of waves, and give twoexamples of when diffraction is useful.b) A loudspeaker has a diameter of 0.15 m. Using the principle ofcircular hole...
- Q Two projectiles with 50kg mass each are launched in oppositedirections towards each other, both at an angle of 30 degrees offthe horizontal. They both have the same initial velocity of...
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