Physics question and answers for July 21, 2023
- Q There was a demonstration of the falling magnet in a simplecopper tube. Explain, in detail, the physics behind why the magnetslows its descent through the tube (it does not touch...
- Q Part a:Why are the phases across eachindividual component (capacitor, resistor, inductor) what theyare?Advice:          Start with formula ϕ=arctan(ω0^2−ω^2/γω)for ϕ above, and consider it at theresonant frequency. (Or, equivalently, consider the...
- Q Fire hoses used in major structure fires have inside diametersof 2.500 in (1 in = 2.54 cm). The nozzle of the fire hose have aninside diameter of 1.200 in. When...
- Q Describe an experiment that demonstrates the existence offriction force. (assuming only knowledge of the weight force andnormal force)
- Q 1a. A positive particle of charge 5 C sits stationary [locked tothe ground] 3.5 meters from a negatively charged particle, withcharge 2 C. How strong is the force the negative...
- Q Does the emf induced by a changing magnetic flux depend on theresistance of the circuit?A plastic frisbee is fitted with a metal ring around its rim.If the frisbee is thrown,...
- Q Two forces, F⃗ 1 and F⃗ 2, act at a point.F⃗ 1 has a magnitude of 8.20 N and is directed at an angleof 64.0 ∘ above the negative x...
- Q 2. Infinite current plate J = ax5 (A/m) placed in alignmentwith the xy plane air (area 1).Separate mediums with z > 0) and μ r2 = 2 (area 2, z...
- Q A neutral conducting sphere is suspended from a thin insulatingthread (don't ignore gravity in this problem). A charged insulatingrod is brought near the sphere, but the rod and sphere do...
- Q A \"Carnot\" refrigerator (reverse of a Carnot engine) absorbs heatfrom the freezer compartment at a temperature of -17
- Q A .5 kg air puck moves to the right at 3 m/s, colliding with a1.5kg air puck that is moving to the left at 1.5 m/s.1. Determine the direction and...
- Q What is the difference between a refrigerator and a heat pump?What is the difference between a refrigerator and an airconditioner? Define the coefficient of performance of arefrigerator in words. Can...
- Q You see a dead squirrel in your yard. You do not know if it waselectrocuted (source AC) or hit by lightning (source DC). Is thereany way to find out (after...
- Q A 3 kg cat can jump at 3 m/s. The cat rests on an 8 kg sled(A),then jumps to another 8 kg sled(B). The cat immediately spinsaround and jumps back...
- Q Explain carefully what is meant by effective mass in the contextof semiconductor physics. The energy band dispersion relation (Evs. k) for a simple one-dimensional monatomic semiconductor oflattice constant a can...
- Q An object of mass 4.15 kg undergoes an acceleration of 3.5 m/s^2for a period of 7.0 seconds. It then undergoes an acceleration of-4.2 m/s^2 for a period of 18.0 seconds....
- Q Two spheres, one solid, one a thin shell, each have a mass of0.89 kg and a radius of 11 cm. They are given the sametorque of 0.13 mN acting for...
- Q A 160-V battery is connected across two parallel metal plates ofarea 28.5 cm^2 and separation 8.10 mm . A beam of alpha particles(charge +2e, mass 6.64×10^−27kg) is accelerated from rest...
- Q An ideal gas that goes through a cyclical process on a PVdiagram and returns to the location on the PV diagram where itbegan. analyze changes in temperature and thermal energy...
- Q 2. (A) Determine the magnetic force acting on aconducting 10.00cm straight piece of wire with a current of 1.00 A,placed so the wire has the positive current flowing east (electronsin...
- Q I need part 1, 2, and 3 answered please just google PhET Massesand Springs Simulations Lab and click the first link. The previewof the lab should be in a box...
- Q Assume a planet with mass M and radius R.(a) Find the strength of its gravitational field at the surface,g. [5](b) Find the escape velocity, vesc, for a mass on the...
- Q Electrochemical capacitor and battery are electrochemical energystorage system. The former has a very good power density (fastcharging/discharging) but low energy density, while the latter hasthe opposite properties. Please design a...
- Q A mountain climber stands at the top of a 41.5-m cliff thatoverhangs a calm pool of water. She throws two stones verticallydownward 1.00 s apart and observes that they cause...
- Q canyou pleae summary this article Immenual Kant's \"Groundwork for theMetaphysics of Morals\"
- Q Consider three particles that interact withinternal forces given by ? ⃗ 1→2, ? ⃗ 3→1,etc. The totalforce on the system is the sum of these internal forces with anyexternal forces(?...
- Q An 80 cm by 80 cm square loop of wire lies in the xy-plane andhas a resistance of 0.2 Ω. It sits in a time-dependent uniformmagnetic field of [0.6 sin...
- Q What is the classical and relativistic momentum of an objectwith a mass of 5 kg moving at a speed of 0.8c?
- Q Two positive point charges q1 = 6.0nC and q2 = 9.0nC areseparated in a vacuum by a distance of 5.36m. The spot on the linebetween the charges measured from the...
- Q There was a demonstration I did our Zoom class with a fallingmagnet in a simple copper tube. Explain, in detail, the physicsbehind why the magnet slows its descent through the...
- Q A 35.0g idol made of wood has a Geiger counter placed next to itand found that it emitted 130 decays during a 5.00 minute timeframe. How old is the artifact?
- Q An airplane leaves from city A, located in the east1500 km from city B. The aircraft has a speed of 500km/h to theeast and at the same time it blows...
- Q A capacitor is fully charged and then connected in series to aninductor with zero resistance wires. This is an ideal L-C circuitthat will oscillate the current direction. Explain HOW and...
- Q A positive charge is moving along the x-axis in the positivedirection. What is the direction of the magnetic field on they-axis?A long straight wire lies along the y-axis carrying current...
- Q If you have never taken a philosophy class before, in a generalsense what do you know and think about philosophy? What are yourfears, excitements, curiosities etc about taking this philosophyclass?What...
- Q %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%Consider a particle of mass m moving in a two-dimensional harmonicoscillator potential :U(x,y)= 1/2 mω^2 (x^2+y^2 )a. Use separation of variables in Cartesian coordinates to solvethe Schroedinger equation for this...
- Q Fire hoses used in major structure fires have inside diametersof 2.500 in (1 in = 2.54 cm). The nozzle of the fire hose have aninside diameter of 1.200 in. When...
- Q a crate of stuffed kittens with a mass of 1kg compresses aspring a distance of 2.84m. The spring has a spring constant of250N/m. The crate is released and slides across...
- Q 5a. The tires on a new compact car have a diameter of 2.0 ft andare warranted for 56,000 miles. How many revolutions will the tiresgo during the warranty period?5b. A...
- Q The equation of a transverse wave on a string isy=(5mm)Sin[(10m-1)x+(200s-1)t]. The tension in the string is 50 N.(a) What is the wavelength of the wave? (b) What is the frequencyof...
- Q The power dissipated in a resistor is given by P=V2/R , whichmeans power decreases if resistance increases. Yet this power isalso given by P=I2R , which means power increases if...
- Q Submarine A is underwater traveling northbound at a speed of 30m/s. Behind sub A, sub B is also underwater, but at a speed of 15m/s and traveling southbound. Sub A...
- Q A 75kg surfer is paddling out on a 10.5ft wooden longboard withdensity 167kg/m3 . Seawater has specific gravity of 1.03. Assumingnone of the surfer is submerged at the moment, how...
- Q 1. Provide an example of an inertial frame of reference and anon-inertial frame of reference. Explain the difference.2. Using the Michelson-Morley experiment as an example, explainwhy classical mechanics was unable...
- Q 1. Make a list of five or more important & interestingproperties of the Pluto/Charon system.2. What is the Kuiper belt, what type of bodies does it contain(also name a few)...
- Q Describe your design for a transformer that steps up voltagefrom 120 to 1200 V. (Talk about the numbers of turns and thematerial of the core, specifically.) Will the input and...
- Q Draw the equipotential and electric field line patterns for thefollowing configurations:1. A parallel plate capacitor2. A parallel plate capacitor with a small, non-conducting cubeplaced between the two plates. (i.e. The...
- Q Light with wavelength 530 nm in air (n = 1) passes through asoap bubble (n = 1.33), where its wavelength becomes ≈ 400 nm.A What is the phase difference between...
- Q Consider a 200 kg spacecraft orbiting the Earth. The vehicle’sposition at a given time (lets call it time zero), relative to anon-rotating reference frame with origin at Earth’s centre, is...
- Q Voyager 1 space probe transmits to Earth at a frequency of 6.2 GHz. At some point the intensity of the wave was I = 2.95e-25 W / m2.a) What will...
- Q What is center of gravity? Explain in detail the reason behind tohave lower center of gravity in sports car.
- Q Members of the astronomy club just posted an article about thediscovery of a small comet which orbit is in the same orbit planeas the Earth. In the article it is...
- Q 1.Describe the two-step process by which extrinsicsemiconductors are created by doping impurities into intrinsicsemiconductors.2.Compare and contrast the two mechanisms of atomic diffusionand comment on which of these occurs more rapidly...
- Q calculate the doppler shift in the frequency of photontraveling along y axis with respect to moving observer along x axiswith velocity v ,explain brielfy how does doppler effect of lightin...
- Q Windows 10 Inside Out:In the Search box on the Taskbar, type WordPad and press“Enterâ€.Type some text into WordPad.A) What keyboard shortcuts would you use to select all of thistext and...
- Q 1. In the Reggio Emilia Approach, the teacher is a/n ____ oflearning rather than the dictator of what will be learned, when itwill be learned and for how long the...
- Q I have two Biophysical chem questions that I have no idea how toget the answer. Please help and show work. Thank you.1. The unit millimeters of mercury (mmHg) has been...
- Q A projectile is launched horizontally with an initial speed ofv0 = 38.5 m/s at the top of a cliff in a lake (h = 80 m) What isthe speed of...
- Q what are advantages and diadvantages of eddy current?
- Q A curve of radius 69 m is banked for a design speed of 80 km/h .if the coefficient of static friction is 0.33 (wet pavement) atwhat range of speeds can...
- Q Carlos takes a 16 kg bag of ice at -5 ∘C from a freezer and putsit in the back of his truck. Unfortunately, he forgets about it andthe ice melts.How...
- Q A 900-kg car traveling east at 20.0 m/s collides with a 750-kgcar traveling north at 15.o m/s. The cars stick together. Assumethat any otherunbalanced forces are negligible. (Draw Diagrams)(a) What...
- Q I need to calculate if I'm going to gain or lose weight in next6 moths,based on energy intake and consumption. Which formulas do Ineed to use?
- Q A 5ft tall 50kg gymnast is walking along a 7m long solid woodenbeam supported but two legs on either side set 1m from the ends. Ifshe is carrying a hollow...
- Q pleses, give me full slides on the spectral series of hydrogenatom including the diagram
- Q Two astronauts are 137m away from their spacecraft and both areuntethered. The larger one of mass “m†(including the mass of thespacesuit etc.) has plenty of oxygen while his partner...
- Q A bowler throws a bowling ball of radius 11cm down a bowlinglane. It has an initial linear velocity of 8.8 m/s, but no initialangular velocity. The kinetic friction force causes...
- Q A spherical virus has a diameter of 60 nm. It is containedinside a long, narrow cell of length 1×10−4m1×10−4m. Whatuncertainty does this imply for the velocity of the virus along...
- Q A block-spring oscillator on a frictionless table has k = 125N/m and block mass = 0.5kg; the block is oscillating back and forthand its initial position (i.e. when t =...
- Q How much heat energy is required to liquify a 4.40-g ice cube at-6 °C? (heat of fusion of ice is 333 000 J/kg, specific heat of iceis 2090 J/kg⋅°CPlease help...
- Q A solid, homogeneous sphere with a mass of m0, aradius of r0 and a density of Ï0 is placed ina container of water. Initially the sphere floats and the waterlevel...
- Q A baseball leaves the bat 1.5m above the ground traveling at100mph at an angle of 27 degrees above the horizontal. There is a3.1m high fence 14m a. Assuming air resistance...
- Q A baseball leaves the bat 1.5m above the ground traveling at100mph at an angle of 27 degrees above the horizontal. There is a3.1m high fence 14ma. Assuming air resistance is...
- Q An electron is trapped in an infinitely deep one-dimensionalwell of width 0.288 nm. Initially the electron occupies the n = 4state. (a) Suppose the electron jumps to the ground state...
- Q We are introduced to the magnetic field as a way to keep trackof the force that arises from lenght contraction in specialrelativity. A moving distribution of charge becomes more dense...
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