Physics question and answers for September 15, 2023
- Q Calculate the energies and wavelengths of the three lowestradiations emitted by H2?
- Q What is the maximum torque on a molecule of HCl (dipole moment p= 3.60
- Q A 24 kg mass is connected to a nail on a frictionless table by amassless string 1.1 m long. There is no appreciable frictionbetween the nail and the string. If...
- Q 1.explain why ia an ohmic the current through the resistor isproportional to the voltage differnce across the resistor. yourexplanation must refer to the electric field
- Q A runner jogs for 150 m due west (displacement A) and then turnsto a direction 30.0 degrees east of south and jogs for another 100m (displacement B). Showing all work...
- Q One ring to rule them all. N identical beads (mass m) can movealong the ring of radius R. Each bead is connectedto the one behind it and to the one...
- Q A science student is riding on a flatcar of a train travelingalong a straight horizontal track at a constant speed of 10.2 m/s.The student throws a ball along a path...
- Q A 35.0-kg child swings in a swing supported by two chains, each2.92 m long. The tension in each chain at the lowest point is342N.(a) Find the child's speed at the...
- Q An unmarked police car traveling a constant 95km/h is passed bya speeder traveling 133km/h .Precisely 1.00 s after the speeder passes, the police officersteps on the accelerator; if the police...
- Q Please show Each Formula and Each Step used to obtain theanswer(s).A hydrogen atom consists of a single proton and a singleelectron separated on the average by 0.578 x 10-10meters. Calculate...
- Q I see demonstrations of single slit diffraction associated withthe uncertainty principle. Is single slit diffraction a result ofuncertainty, or is this just a demonstration to help understanduncertainty?
- Q 1. describe what is needed to form longitudinal standing wavesin a slinky and how they are formed.2. what is the difference between a longitudinal wave and astanding longitudinal wave. how...
- Q Determine whether each of the statements below is true or false,and place it in the appropriate bin.Which statements below are True and which areFalse:1. It is possible to move at...
- Q (a) Find the pressure difference on an airplane wing if airflows over the upper surface with a speed of 114m/s , and along thebottom surface with a speed of 107m/s...
- Q Asteroid X, speeding at 100 m/s towards an equally massive butstationary asteroid Y, collides with a glancing blow. Aftercollision, X is deflected at 35 degrees from its original directionwhile Y...
- Q Jennifer lifts a 2.4 kg carton of cat litter from the floor to aheight of 0.81 m.(a) How much total work is done on the carton during thisoperation?___________Jb) Jennifer then...
- Q Special relativity: describe the principle of relativityand Lorentz transformations, and derive the effects of timedilation and length contraction. Also explain the meaning of theequation E = m c2Basic understandings of...
- Q Oil has a density ? of 860kg/m3. An oil droplet issuspended between two plates 1.0cm apart by adjusting the potentialdifference between them to 1177V. When the voltage is removed, thedroplet...
- Q How much heat is required to raise an 820g copper pan from 11?Cto 91?C if (a) the pan is empty; (b) the pan contains 1.4kg ofwater; and (c) the pan...
- Q A very long, straight solenoid with a cross-sectional area of5.85 cm^2 is wound with 32 turns of wire per centimeter, and thewindings carry a current of 0.245 A . A...
- Q a) write down the decay process for carbon-10.      b) calculate the change inenergy for the reaction?      c) show the shell model forthe reaction and explain how this shows which element...
- Q In an ink-jet printer, drops of ink are given a controlledamount of charge before they pass through a uniform electric fieldgenerated by two charged plates. If the electric field between...
- Q Weighing LunchFor lunch you and your friends decide to stop at the nearestdeli and have a sandwich made fresh for you with 0.100 kg ofturkey. The slices of turkey are...
- Q (a) A block of mass m = 3.90 kg is suspended as shown in thediagram below. Assume the pulley to be frictionless and the mass ofthe strings to be negligible....
- Q We observe a glancingcollision between two billiard balls of the same mass. The firstball is incident at a speed of 6.36m/s, strikes the second ball (initially at rest) and movesoff...
- Q The figure is a section of a conducting rod of radiusR1 = 1.45 mm and length L = 12.60 minside a thin-walled coaxial conducting cylindrical shell of radiusR2 = 10.7R1...
- Q (a)i. Name five common feautures of catalysis ii. Describeadsorption, desorption, physisorption and chemisorption. (b) Draw alabeled phase diagram for water and explain it briefly.
- Q A ski starts from rest and slides down a 30 ∘ incline 70 mlong.A)If the coefficient of friction is 0.075, what is the ski'sspeed at the base of the incline?B)If...
- Q Tris, (HOCH2)3CNH2 (pKb = 5.91), a very common buffer forstudying biochemical processes, is prepared by a biological chemistusing 10.0M NaOH to a pH of 7.79 using 31.52 g of (HOCH2)3CNH3Cl,or...
- Q A 0.130-kg cube of ice (frozen water) is floating in glycerine.The gylcerine is in a tall cylinder that has inside radius 3.20 cm. The level of the glycerine is well...
- Q The Ads side of the AdS/CFT correspondence is a model of quantumgravity in 5 dimensional antidesitter space. What can it say aboutquantum gravity in our 4-spacetime dimensions? Or is it...
- Q A.) 1 L of oxygen gas has a temperature of 0
- Q Under normal conditions, you are just barely able to lift a massof 91 kg. Your friend drops a box of volume 7 m3 into alake. If you are just able...
- Q Three ideal polarizing filters are stacked, with the polarizingaxis of the second and third filters at 29.0? and 55.0?,respectively, to that of the first. If unpolarized light isincident on the...
- Q What are your thoughts around the use of biotechnology for foodproduction ? What are the positives as well as the down side?
- Q One model for the length of a person's ACL(LACL, in millimeters) relates it to theperson's height (h, in centimeters) with the linearfunctionLACL = 0.4606h ?41.29.Age, gender, and weight did not...
- Q Consider the Hamiltonian H, namely,H=A(Jz,1 +Jz,2)+BJ1 ·J2for a system of two particles in which the first particle hasa spin of 3/2 (j1), and the other has a spin of 1/2...
- Q Two ice skaters, Daniel (mass 69.2 kg) and Rebecca (mass 50.1kg) are practicing. Daniel stops to tie his shoelace and, while atrest, is struck by Rebecca, who is moving at12.7...
- Q Often times during volcano eruptions the clouds have largestatic charge buildups that cause lightning to happen. If a rock isejected by the volcano and it flies to a height of...
- Q A spring with spring constant 20 N/m hangs from the ceiling. Aball is attached to the spring and allowed to come to rest. It isthen pulled down 8.5 cm and...
- Q The free oscillations of a mechanical system are observed tohave a certain angular frequency ?1. The same system,when driven by a force F0cos?t, has a power resonancecurve whose angular frequency...
- Q Elpotencial el
- Q At a steam power plant, steam engines work in pairs, the heatoutput of the first one being the approximate heat input of thesecond. The operating temperatures of the first are...
- Q A converging lens of focal length 20.0 cm forms images of anobject situated at various distances. (a) If the object is placed40.0 cm from the lens, locate the image, state...
- Q Consider each of the following systems for long times, at whichtheir behacioor is time invariant. Identify each system asequilibrium or steady state.1) A hose supplies water at a constant rate...
- Q A 0.59 kg object connected to a light spring with a forceconstant of 19.2 N/m oscillates on a frictionless horizontalsurface. If the spring is compressed 4.0 cm and released fromrest.(a)...
- Q World production of crude oil in 2010 was about 3.5billion tonnes. Assume that we wish to replace 10% of this supplywith a transportation fuel derived from biomass. Assume that theenergy...
- Q A uniform electric field ofmagnitude E=270V/m is directed in the positive x direction. Aproton moves from the origin to the point (x, y)=(20.0cm,50.0cm).a) Through what potential difference does the charge...
- Q A river has a steady speed of 0.370 m/s. A student swimsupstream a distance of 1.00 km and swims back to the startingpoint.(a) If the student can swim at a...
- Q The diameter of a nickel is 21 mm .How far from your eye must it be held so that it has the sameapparent size as the moon? (Use the astronomical...
- Q Beryl (m=45kg) is standing in an elevator that is movingvertically upward at a speed of 3 m/s. 1.5 s later, the elevatorand Beryl are moving vertically downward at a speed...
- Q Write a program using multiple functions. Make use of an arrayto store data Make use of searching techniques Read data from afile Write data to a file Instructions: In this...
- Q A physics student is sitting on a rotating platform. He isholding a heavy weight in each of his outstretched hands. Atrequest of his physics instructor(!) he carries out variousmanoeuvres to...
- Q Secret agent Samantha Bond, 48.50 kg, has just ignited her jetpowered skis at the foot of a 10.0 degree slope that rises inheight by 50.0 m. The skis have a...
- Q Exercise 8.36A 1050 kg sports car is moving westbound at 13.0 m/son a levelroad when it collides with a 6320 kg truck driving east on the sameroad at 12.0 m/s...
- Q Write the augmented matrix for the following system of linearequations. Solve the equation (x,y,z) by row reduction.x+3y-2z=53x+5y+6z=72x+4y+3z=8
- Q What is the maximum kinetic energy of an electron emitted in thebeta decay of a free neutron?
- Q At the inlet of a steam turbine the following information aregiven: p=1000 kPa, T=500 deg-C, u = 3124.3 kJ/kg, v = 0.35411, V=20m/s, z=10 m, and mdot=10 kg/s.determine the inlet...
- Q A 40.0-uF capacitor is connected to a 50.0-ohm resistor and agenerator whose rms output is 30.0 V at 60.0 Hz.Find...A) the rms current circuitB) the rms voltage drop across the...
- Q a. A camera has a lens with a focal length of 0.032 m. Thecamera is set to an f-number of 5.6. The shutter speed (the amountof time during which the...
- Q Water is being pumped through a horizontal pipe that is 36.0 mlong and 13.5 cm in diameter. A pump maintains a gauge pressure of742 Pa at a large open tank...
- Q 1) Serious bicyclists say that if you reduce the weight of abike, it is better to reduce it in the wheels rather than in theframe. Why would reducing weight in...
- Q Define activation energy, half-life, and zeroth order reactionin your own words.
- Q What is the purpose of having fuses or circuit breakers inelectric circuits? How should they be connected in circuits so theywill be effective?
- Q A test rocket is launched, starting on the ground, from rest, by accelerating it along an incline with constant acceleration \"a\".The incline has length \"L\", and it rises at ? degrees above the horizontal. At the instant the rocket leaves the incline, its engines turn off and it is subject only to gravity, g?+9.81m/s2. (Air resistance can be ignored).Taking the usual x-y coordinate system, with an origin at the top edge of the incline, (a)what is the position vector when the rocket is at its highest point? (b)What is the position vector when the rocket is on its way back down and once again at the same height as the top edge of the incline? Your symbolic answer should only depend on a, L,?, g, and/or numerical factorsAsked by
- Q 7. What is the energy released in the fissionreaction    01n + 92235U ?55141Cs + 3792Rb +3  01n? (The atomic mass of 141Csis 140.920046 u and that of 92Rb is 91.919729u)  MeV
- Q Unless otherwise stated, all objects are located near theEarth's surface, where g = 9.80 m/s2 .At the end of most landing runways in airports, an extension of therunway is constructed...
- Q What is the maximum angle of climb (steady velocity climb) for aturbojet powered aircraft with an (L?D)max equal to 10.5 and agross weight of 8000 lb. if it is producing...
- Q a 5.00 kg ball, moving to the right at a velocity of 2.00 m/s onthe frictionless table, collide head on with a stationary 7.50 kgball. find the final velocities of...
- Q A thermos bottle in the shape of a cylinder has an inner radiusof 4.0 cm, an outer radius of 4.5 cm, and a lengt of 30cm. Theinsulating walls have a...
- Q The motion of a human body through space can be modeled as themotion of a particle at the body's center of mass as we will studyin a later chapter. The...
- Q If the coefficient of kinetic friction between tires and drypavement is 0.75, what is the shortest distance in which you canstop an automobile by locking the brakes when traveling at...
- Q A projectile is launched with an initial speed of 40.0 m/s at60.0 degrees above the horizontal. It hits the ground at the sameheight it was launched from. Neglect air resistance.a)...
- Q Two ice skaters, Daniel (mass 65.0 kg ) and Rebecca (mass 45.0kg ), are practicing. Daniel stops to tie his shoelace and, whileat rest, is struck by Rebecca, who is...
- Q Why is it hard to measure the phenomenon experienced at thespeed of light?
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