Physics question and answers for August 01, 2023
- Q A very long solenoid with a circular cross section and radiusr1= 1.50 cm with ns= 100 turns/cm lies insidea short coil of radius r2= 3.70 cm and Nc= 33turns.If the...
- Q A magician wants to do the trick in which he pulls a tableclothfrom a table, leaving the items on the table behind, unmoved. Itturns out that this isn't magic at...
- Q A batter hits a fly ball which leaves the bat 0.96 mabove theground at an angle of 62 ∘ with an initial speed of 29 m/s headingtoward centerfield. Ignore air...
- Q At an Ice Cream Store, a single scoop of ice-cream can bemodeled by a hemisphere which is 1 inch tall. The ice-cream fitsperfectly on top of a cone that is...
- Q A B C D 14. A steel ball is dropped from a diving platform (withan initial velocity of zero). Using the approximate value of g = 10m/s^2, what is its...
- Q Spiral arms result from density waves in a disk galaxy. Starformation occurs in these arms. As the material in a galaxyinteracts with a spiral density wave, clouds compress and dustlanes...
- Q A skier with a mass of 75kg starts from rest at the top of aslope which is 110m tall and skis to the bottom. Hint: you must useconservation of energy...
- Q Please I need a clear explanation and clear handwritingwith explanaing this for me because I am realy confused and needhelp. Thanks in advanceMy lab was about  Magnets andMagnetic fields. This is...
- Q a ball is thrown up onto a roof, landing 3.60 s later at heighth = 25.0 m above the release level. The ball's path justbefore landing is angled at ?...
- Q A metal sphere of radius 12 cm is charged using a rubber rod andacquires a charge of Q 1 = +5.8 μC. It is brought into contact withanother metal sphere...
- Q How can I get density of state, Fermi energy, and total energyin 1,2 dimension when we have N electrons without interaction.
- Q A dog in a weight-pulling competition tugs a 50-kg sled adistance of 5 m across a snowy track. The dog pulls horizontallywith a force of 350 N. The coefficient of...
- Q When two carts collide, we know that the total momentum of thesystem should be conserved, as long as there are no external forcesacting on the system. That is, Pi =Pf,...
- Q Why must an IV bag beplaced above a patient’s arm, but a syringe can be appliedhorizontally? PLEASE EXPLAIN THIS THOROUGHLY AND RELATE TOPHYSICS CONCEPTS
- Q 5-What is the maximum energy that can be transferred to anelectron in a hardcollision by a 25-MeV (a) electron (according to convention), (b)positron, (c)proton, (d) a-particle?6-Redo problem 5 for the...
- Q On emitting a photon, the hydrogen atom recoils to conservemomentum. Explain the fact that the energy of the emitted photon isless than the energy difference between theenergy levels involved in...
- Q Make a description of a Carnot engine considering theradiation of a black body as working substance. Verify Clausiusrelationship
- Q 37.44•• A Σ+Σ+ particle has a mean lifetime of 80.2 ps. Aphysicist measures that mean lifetime to be 403 ps as the particlemoves in his lab. The rest mass of...
- Q 1. A commercial airliner is flying at 450 mph, 20° eastof north, relative to the surrounding air. The surrounding airthough is blowing at 90 mph, 40° south of east, relative...
- Q Describe three different methods for the detectionexoplanets.For each method, explain what type of exoplanet is the methodmost sensitive for detecting?i.e. large vs. small, close in vs. far out from its...
- Q Describe the general types of interactions that contribute tothe collision stop- ping power, (dTl&),.
- Q A cannon on a train car fires a projectile to the right withspeed v0, relative to the train, from a barrel elevated at angle θ.The cannon fires just as the...
- Q Two planets P1 and P2 orbit around a star S in circular orbitswith speeds v1 = 42.6 km/s, and v2 = 56.0 km/s respectively.(a) If the period of the first...
- Q 3. Geodesics in R2 : Consider 2D flat space in polarcoordinates r and θ. Find the curves parametrized by r(s) and θ(s)that satisfy the geodesic equation, and show that they...
- Q Imagine a bar magnet, with North and South poles, moving in thedirection perpendicular to a single loop of wire on the horizontalplane, as shown below.  Show the directions of currentinduced...
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