Physics question and answers for July 28, 2023
- Q 37) A pendulum whose period in a vacuum is 2.3 second is placedin a resistive medium. Its amplitude on each swing is observed tobe half that on the previous swing....
- Q For each of the following experiments, cite at least oneexample from each of the four kinds of systematic errors that couldaffect the experiment:to. A sphere that rolls on an inclined...
- Q Consider and airplane flying at a pressure altitude of 40,000feet and a density altitude of 30,000 feet. Calculate the outsideair temperature.
- Q Design an experiment to find the relationship between the masson the spring and the period of oscillation. Include: What quantitywill you vary?Which quantities will you hold constant?What quantities will you...
- Q What is an “X ray†(radiograph)—what creates the image?What sort of radiation is involved? Are X rays “perfectly safe�If not, what are the dangers?
- Q A hollow, plastic sphere is held below the surface of afreshwater lake by a cord anchored to the bottom of the lake. Thesphere has a volume of 0.640 m3 and...
- Q A horizontal piston assembly contains water. The piston isconnected to a shaft, which can apply different forces to thepiston as the water is expanded or compressed. Initially theapparatus contains a...
- Q Consider a system of three particles with three energyeigenstates of 0, 3ε and 5ε. Write the partition function for threeparticle system.a) If the particles are non-identicalb) If the particles are...
- Q A cameraman on a pickup truck is traveling westward at 23 km/hwhile he videotapes a cheetah that is moving westward 23 km/hfaster than the truck. Suddenly, the cheetah stops, turns,...
- Q Within the disc of gas and dust that surrounded the protoSunthere was a radial temperature gradient outwards to the edge of thedisc. Describe the sequence of events that led to...
- Q 2.) For this problem the heights are low enough that theacceleration due to gravity can be approximated as -g.(Note: even at low Earth orbit, such as the location of theInternational...
- Q 1. A)how would parallax effect a measurement1. B) Give several instances when error can be introduced whilemaking a measurement.1.C) Elaborate on the statement that \"all measurements have adegree of uncertainty\".
- Q A proton with a velocity V = (2.00 m / s) i - (4.00 m/ s) j - (1.00 m / s) k, a B = (1.00 T) i +...
- Q A tuna with a mass of 100kg swims at a level depth of 20m belowthe surface of the sea.1) Draw a free body diagram for the tuna.2) Calculate the buoyant...
- Q Electric Potential (Parallel Plate Capacitor PotentialEnergy and Potential)A parallel plate capacitor has two terminals, one (+)and the other (-). When you move a test positive charge, q atuniform velocity from...
- Q Consider a flat expanding universe with no cosmological constantand no curvature (k=0 in the Einstein equations). Show that if theUniverse is made of \"dust\", so the energy density scales like1/a^3,...
- Q Briefly describe Millikan’s oil drop experiment and what do theresults tell us about electric charge.
- Q A puma leaps from one cliff ledge to another, the second ledgeleapt to is 0.7m higher than the first, as well as 2.4m furtheralong the cliff. (10)1) Calculate the velocity...
- Q There are many subtle effects that must be taken into account incalculations involving GPS satellites. Estimate just the effect ofthe time dilation of special relativity.(a) Find the speed of a...
- Q A hollow sphere of radius 0.230 m, with rotational inertiaI = 0.0739 kg·m2 about a line through itscenter of mass, rolls without slipping up a surface inclined at22.5° to the...
- Q Acrate of mass 9.2 kg is pulled up a rough incline with an initialspeed of 1.42 m/s. The pulling force is 96N parallel to theincline, which makes an angle of...
- Q At a particular moment, three charged particles are located asshown in the figure below. Q1 = −4.5 μC, Q2 = +5.5 μC, and Q3 =−7.0 μC. Your answers to the...
- Q 3 moles of an ideal gas with 2 atoms under 308 K temperature and5 atm are expanded reversible to 1 atm end pressure. Calculate w,q, ΔU, ΔH values ​​in case...
- Q A block with mass 0.460 kg sits at rest on a light but not longvertical spring that has spring constant 85.0 N/m and one end onthe floor.a)How much elastic potential...
- Q Two metal spheres of identical mass m = 3.60 g are suspended bylight strings 0.500 m in length. The left-hand sphere carries acharge of 0.765 µC, and the right-hand sphere...
- Q At time t = 11.5 sec, a particle of mass M = 5 kg is atthe position (x,y,z) = (4,4,6) m and has velocity (2,1,-2) m/s.1) What is the x...
- Q A hydrostatic system consists of 0.1 moles of an ideal gas whosespecific heat capacity at constant volume, ??, is equal to 3?2where R is the gas constant equal to 8.31...
- Q 1 - The plates of a spherical capacitor have radii of 38.9 mmand 40.2 mm.(i) Calculate the capacitance. (in F)(ii) What must be the plate area of a parallel-plate capacitorwith...
- Q What happens to the observer's local night sky as the observer'slatitude gradually changes:A. from the equator gradually towards the north poleB. as local time passes from sunset to sunrise?C. as...
- Q 6. A one-dimensional diatomic crystal contains 2 different atomswith masses ?1 and ?2, with ?1< ?2, in each of its unit cell.Assume that there is interaction between every nearest neighboratoms...
- Q A 2 km diameter thunderstorm produces 4.2 cm of rainfall in 4hours.  What is the power production from latent heat ofcondensation of this storm, in megawatts?  A megawatt isa million watts and...
- Q What is PET— what kind of image does it create and how?Why use PET with CT rather than CT alone? Give the mainreason/application.What sort of radiation is involved? Is PET...
- Q why the longer the distance a force is applied fromthe fulcrum the greater the output force. I want to know how thisworks exactly and how does a larger distance affects...
- Q You observe a binary system and see Doppler shifts in the Hβlines from the two stars of 0.02 nm and 0.05 nm respectively.Patient observations show that the period is 22...
- Q A lion spots a gazelle exposed on the plain. The gazelle is 35mfrom the bear, at a compass heading of 230 degrees. 5m from thegazelle, at a heading of 190...
- Q Shooting down planes from the ground during WWII was difficult.A timed explosive is used because hitting a moving aircraft with asingle shot from a cannon is nearly impossible; This explosiveallows...
- Q How would you use henge designed for extremely northernlatitudes be different than one designed for use near the equator.Hint: At the equator the “pie slices†are only 23 1/2degrees.
- Q a. Briefly explain Electrostatics. Express the fundamentalpostulates (law)for electrostatics in free space. Express it in both differentialandintegral forms?b. Explain two ways a magnetic field can be produced?c. There is no...
- Q 6. Select a contrast mode in microscopy. In the space below,describe and illustrate it in detail (hint: phase, dark-field,bright-field) (1 page limit)
- Q State how directions of the electric field, current, driftvelocity, and current density related?
- Q Define 10 different “The right hand rule†first define theapplication and explain how the right hand rule is is applied tofind the direction of physical concept .please answer clearly in...
- Q A person drops a cylindrical steel bar (Y = 8.00 × 1010 Pa) froma height of 3.20 m (distance between the floor and the bottom ofthe vertically oriented bar). The...
- Q Short pulses of microwave radiation are emitted fromthe Crab nebula at a distanceL from the earth. When they reach the earth, the frequencycomponents of the pulsesare dispersed after a travel...
- Q The potential difference across a charged capacitor is 22 V. Thecapacitor discharges through a fixed resistor. After a time equalto the time constant, the potential difference has reduced toV. The...
- Q An object of mass m is moving in +x direction at u velocity andcollides elastically with a stationery object in the x directionhaving a mass M.after the collision the object...
- Q A child swings on a 14 m rope. The highest point of her swing is3 m above the ground. When the child is at the lowest point, 1 mabove the...
- Q Atmospheric air, at constant conditions, 102 kPa pressure and30 ° C to a air conditioning systementers at 60% relative humidity at temperature. The volumetricflow of atmospheric air is 100 L...
- Q An isolated conducting sphere of radius R has chargeQ uniformly distributed on its surface. What is theelectric field (E) inside the conducting sphere atdistance r = R/2 from center?
- Q Two charges, q1 = 32 μC and q2 = 38 μC,are located along a straight line at x = 22 cm and 38 cmrespectively. Where along the x-axis should a...
- Q The heat is both diffusing and advecting in a 1-d domain [0, 1].The temperature satisfies the equation ut = Duxx − cux − λu, 0 <x < 1, t >...
- Q Thediffraction limit the smallest angle that can be resolved, is250,000 arcsec x (wavelength/diameter of instrument). The lens of agiant human eye is about 9.0 cm in diameter . For visible...
- Q (a) Find the force P that must be applied to apiston of area 12.10 cm2 to produce sufficient fluidpressure to support a car weighing 11,851 N by means of a...
- Q Consider an object that begins rolling from rest at the top ofan inclined plane. Assume that there is no slipping between theobject and the ramp, and that the bottom of...
- Q A 1.25 kg block is attached to a spring with spring constant 18N/m . While the block is sitting at rest, a student hits it with ahammer and almost instantaneously...
- Q The atomic mass number of copper is 64. Assume that atoms insolid copper form a cubic crystal lattice. To visualize this,imagine stacking tiny sugar cubes into a big cube. If...
- Q Three point-like charges: q1=9.8μC, q2=4.8 μC andq3=-9.6 μC, are positioned atthe corners of an equilateral triangle with side lengthL= 3.9 cm shown in the figure below.Find electrostatic forcesF1,F2 andF3 exerted...
- Q .Consider a uranium nucleus to be sphere of radiusR=7.4×10−15mR=7.4×10−15m with a charge of 92e distributeduniformly throughout its volume. (a) What is the electric forceexerted on an electron when it is...
- Q A loaded truck of mass 3000 kg moves on a level roadat a constant speed of 6.000 m/s. The frictional force on the truckfrom the road is 1000 N. Assume...
- Q What are the limitations of forward-bias, if any, on asemiconductor diode?What are the limitations of reverse-bias, if any, on asemiconductor diode?What portion, if any of the volt-ampere characteristic of thediode...
- Q 1. A 170 g copper bowl contains 110 g of water, both at 23.0°C.A very hot 370 g copper cylinder is dropped into the water, causingthe water to boil, with...
- Q 3) You are working with a lab instrument that has a diffractiongrating of 600lines/mm. 450nm wavelength light passes through thegrating and hits a screen 2m away from the grating.a. What...
- Q A bicycle racersprints at the end of a race to clinch a victory. The racer has aninitial velocity of 11.2 m/s and accelerates at the rate of 0.3m/s2 for 6.9...
- Q An electric current passes through a metal strip 0.50 cm by 5.0cm by 0.10 mm, heating it at a rate of 128 W. The strip hasemissivity e=1 and its surroundings...
- Q Tiny dust particles are attracted to static charges, soif you could get them from the motor to the air intake by thefloor, it may help to pick up even more...
- Q Set the focal length of the converging lens to 3.0 cmand the object height 2.0 cm.Start with the object distance at 8.0 cm. What happensto the image position and image...
- Q 7) a) What is the energy emitted in 1 minute from a black coffeemug which has a radius of 4 cm and height 6 cm and temperature of70 Fahrenheit. What...
- Q Showthat in 2D, the general orthogonal transformation as matrix A givenby{{cosï±, sinï±}, {-sinï±, cosï±}}. Verify that det[A] = 1 and that thetranspose of A equals its inverse. Let Tij be...
- Q please answer with short verbal commentyou notice that the probability Pab(t) of finding a particlebetween a<x<b at time t (gaussian wave packet function)changes with time. does this mean that the...
- Q what is the wavelength of thermal neutrons? what\"type\" of light would this correspond to (X-ray, UV, VIS,IR)?hint: a thermal particle has an average kinetic energy of ekin=3/2KT with KT= 25...
- Q Write down the four Maxwell Equations (Work on your OWN)a. Explain them. What do they do, how are they used? What aretheir applications.b. Write an example question for each of...
- Q Suppose that we have a reservoir that has a surface area of 50acres, with an average depth when full of 15 meters. [Conversion: 1acre = 4096.86 square meters] If the...
- Q Please explain what static friction is.- If an object slides across a table and stops, is there staticfriction still acting on it? Or is there no friction at all?- Please...
- Q Compare and contrast conventional CT with spiral CT in terms ofimage quality, image acquisition method, speed of acquisition,post-processing functions and patient dose.
- Q Two warlords aim identical catapults (i.e. they both releaserocks at the same speed) at each other, with both of them being atthe same altitude. The warlords have made the necessarycomputations...
- Q A. Imagine that your lab group (which may or may not be takingphysics in an alternate reality) creates a string with screws atpositions 1m, 2m, 3m, 4m, and 5m. You...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!