Physics question and answers for September 26, 2023
- Q A diverging mirror has a focal length of f = 300 mm .A) Calculate the image distance for an object located halfwaybetween the focal point and the mirror. Express your...
- Q Over the course of a multi-stage 4120-km bicycle race, the frontwheel of an athlete's bicycle makes 1.69x106revolutions. How many revolutions would the wheel have made duringthe race if its radius...
- Q At a certain location, electromagnetic wave 1 is measured tohave an average electric field of Eav = 152 N/C, andelectromagnetic wave 2 is measured to have an average magneticfield of...
- Q A 215 g object is attached to a spring that has a force constantof 72.5 N/m. The object is pulled 7.75cm to the right of equilibrium and released from rest...
- Q Jae throws an object with a certain velocity and a certain anglewith respect to the horizontal direction. Calculate the angle atwhich the horizontal displacement of the object is going to...
- Q In a series oscillating RLC circuit, R=16.0Ω, C=1.2μF,L=.20mH,and ε=εmsinωdt with εm=45.0Vandωd=3000rad/s. For time t=0.442msfind (a) the ratePg at which energy is being suppliedby thegenerator, (b) the rate Pc atwhich the...
- Q In what way do sports implements give anadvantage?
- Q Equal charges, q, are placed at the vertices of a hexagon frominfinity. What is the work done to accomplish this?please help!!
- Q a)Explain the pattern followed by a body undergoing strain,including the elastic region, the elastic limit, plasticdeformation, and failureb) List and explain briefly six different stresses, and give anexample of each
- Q Explain why spectral lines are useful in determining thechemical composition of their source.
- Q Question 9One of the key early tests of Einstein's General Theory ofRelativity wasthe bending of the path of starlight and resulting apparentshift in the position of stars because of the...
- Q You are measuring the distance between the 6th and 2nd levels ofthe hydrogen atom while it is passing you at 99.99% of c. ​A) What will this distance appear to...
- Q Europa, a satellite of Jupiter, appears to have an ocean beneathits icy surface. Proposals have been made to send a roboticsubmarine to Europa to see if there might be life...
- Q A child pulls on a wagon of mass 47 kg at an angle 33 degreesabove the horizontal with a force of F. If the wagon accelerates at3.7 m/s2 horizontally, what...
- Q On a horizontal frictionless surface, a small block with mass0.200 kg has a collision with a block of mass 0.400 kg. Immediatelyafter the collision, the 0.200 kg block is moving...
- Q A 4.0-kg block is on an incline plane of 30 degrees angle withrespect to horizontal. a)What is the minimum coefficient of staticfriction (μs)min is need to prevent it fromsliding down?...
- Q 4.15A small 7.40-kgrocket burns fuel that exerts a time-varying upward force on therocket. This force obeys the equation F=A+Bt2.Measurements show that at t=0,the force is 104.0N, and at the end...
- Q 5. The mass of the sun is 2.00 x 1030 kg. The radius of the sunis 7.00 x 108 m.a) What is the DENSITY of the sun?b) What are the...
- Q Explain the difference between homogeneous and inhomogeneousbroadening and give an example of a broadening mechanism for eachof the two cases.
- Q The wall of a house is made from a layer of wood 3cm thick and alayer of wool which is 5.3 cm thick. The layer of wood facesoutside and the...
- Q A spring constant of 250.0 N/m is suspended vertically with itsupper end fixed to the ceiling and its lower end at positiony=0.000 cm. A block of weight 25.0 N is...
- Q 7. A single photon, from an unpolarized source, traveling in thez direction is directed through a series of three polarizers: firsta polarizer with its axis in the x direction, then...
- Q Bob lifts a 0.9kg cup of coffee, initially at rest on the table,up to his mouth. The cup comes to rest after a verticaldisplacement of 0.7m. (NO IMAGE GIVEN)a. In...
- Q A. What is the moment of inertia of a solid iron sphere 20inches in diameter about an axis passing through the sphere halfway from its center to the surface (you...
- Q isit possible to explain to me the one slit interference and two slitinterference as well as their applications?formulae
- Q How to determine particle size using UV Visiblespectroscopy
- Q A boy shoves his stuffed toy zebra, which has mass m, down africtionless chute, starting at a height D above the bottom of thechute and with an initial speed of...
- Q Blocks A (mass 5.00 kg ) and B (mass 9.00 kg ) move on africtionless, horizontal surface. Initially, block B is at rest andblock A is moving toward it at...
- Q Draw how the negative and positive charges are distributed forDC and AC plasmas
- Q A bullet of mass 0.010 kg and speed of 100 m/s is brought torest in a wooden blockafter penetrating a distance of 0.10 m. The work done on thebullet by...
- Q A helium-filled balloon is attached to one en of a uniformwooden beam, lifting it partially up off of the ground. The beam is2.25 meters long and it weighs 578N. What...
- Q 2. As seen from Earth, two spaceships A and B are approachingalong perpendicular directions. Spaceship A is observed by an Earthobserver to have velocity uy = −0.60c and spaceship B...
- Q Why does the weight of an object in the air differ from itsweight in a vacuum (remembering that weight is the force exertedagainst a supporting surface)? Cite an example in...
- Q 3. A proton is accelerated in a Van de Graff through a potentialdifference of 4 million Volts.a. What is its its total energy after acceleration?b. What is the magnitude of...
- Q A helium-filled balloon has a volume of 0.010 m3. Thetemperature in the room and in the balloon is 20 C What are theaverage speed of a particle of helium inside...
- Q A transverse traveling wave on a taut copper wire has anamplitude of 0.200 mm and a frequency of 500 Hz. It travels with aspeed of 100 m/s.(a) Write an equation...
- Q A spacecraft of mass m=520 kg stationary with respect to theSouth Pole of the Earth runs out of fuel and starts to fallvertically toward the South Pole. If the initial...
- Q In physics, what is the buckling theory?
- Q A thin rod (length = 1.85 m) is oriented vertically, with itsbottom end attached to the floor by means of a frictionless hinge.The mass of the rod may be ignored,...
- Q Determine the minimum and maximum impact parameters bmin andbmax for the classical derivation of charged particle collisionalstopping power. Explain the physical meaning of each.
- Q abucket of water with total mass 20 kg is attached to. a rope, whichin turn wound around a 0.050 m radius cylinder at the top of awell. the bucket is...
- Q a)Draw the diagram and describe the key components of a PLD.b)Describe the main advantage in using PLD deposition versus otherPhysical Vapour Deposition methods.
- Q write a surmmary:5.4.2 Applying External FiltrationApplying external filtration to a building requires modifica-tions to the building’s HVAC system and electrical system, and italso usually requires minor architectural changes to reduce...
- Q You launch a projectile with an initial speed of 54 m/s fromthe top of a building 70 m above the ground, at an angle of 60.0degrees above the horizontal. How...
- Q In scanning probe microscopy, what is the most common technologyto facilitate precise scanning? (Describe/draw the operatingprinciple as well as the technological application (actualdevice))
- Q In (Figure 1), the rod moves with a speed of 1.6 m/s on rails29.0 cm apart. The rod has a resistance of 2.1 Ω . The magneticfield is 0.31 T...
- Q A table of the specific heats of several materials is listedbelow.MaterialSpecific heatC(J/kg degree C)Water4184Beryllium1825Wood1400Aluminum900Glas753Silicon705Stainless Steel502copper386Brass381Germanium320Silver235Gold129Lead1291. Suppose that after you measure the specific heat Cs of thebrass sample, you repeated your...
- Q A 100 Hz AC voltage source, with a peak output of 170 V, isconnected to an inductor. If the rms current through the inductoris 1 A, what is the value...
- Q An atomic nucleus initiallymoving at 420m/s emits an alpha particle in the direction of itsvelocity, and the new nucleus slows to 346m/s. If the alphaparticle has a mass of 2u...
- Q Two spherical objects have a combined mass of 170 kg . Thegravitational attraction between them is 7.24×10^−6 N when theircenters are 21.0 cm apart. What is the mass of the...
- Q 16 cm = _________________________ nm180 mph = _______________________cm/s42 μm = ________________________cm271 g/cm3 = _______________________ kg/m325 ft = ________________________ mm1692 m/s2 = ________________________ cm/hr2255 mm = ________________________ Mm3x108 m/s = _______________________...
- Q Two point charges lie on the x axis. A charge of 6.5 μC is atthe origin, and a charge of -9.5 μC is at x=10.0cm.What is the net electric field...
- Q Two substances, A and B, have the same mass. Substance A is at ahigher temperature than B, and heat transfers between them untilequilibrium is reached. The decrease in the temperature...
- Q Suppose one gallon of gasoline produces 1.19×108 J ofenergy, and this energy is sufficient to operate a car for 21.1miles. An aspirin tablet has a mass of 324 mg. If...
- Q A high frequency proton scatters off of an electron. At whatangle should a detector be placed to detect the photon if thechange in wavelength is 1.4 x 10-4 nm?
- Q A projectile is fired from the ground, reaches a maximum heightof 26.8 m and lands a distance of 76.7 m away from the launchpoint. What was the projectile s launch...
- Q A power line running East-West at 150kVAC carrying a75MWatt load is 10 meters overhead. A thief makes a 100 turn loopof insulated copper wire around a plastic garbage can with...
- Q A large punch bowl holds 3.30 kg of lemonade (which isessentially water) at 22.0 ∘C. A 5.60×10−2-kg ice cubeat -10.0 ∘C is placed in the lemonade.Part AWhat is the final...
- Q A woman lifts a 7.2-kg barbell in each hand with her arm in ahorizontal position at the side of her body and holds it there for3 s. The deltoid attaches...
- Q On watching The Dark Knight (2008) again, I was struck withinspiration for a physics problem. In their final confrontation,Batman throws the Joker off of a high building. Half-way down tothe...
- Q A 150g ball slides down a perfectly smooth incline starting at aheight of 2.44m, at rest. At the bottom of the incline is strikesand sticks to a 280g block. The...
- Q Josh has just raised a 2.5 kg bucket of water using a well 'swinch when he accidentally lets go of the handle. The winchconsists of a rope wrapped around a...
- Q Magnetism is produced by circulating electric currents, but alsoby the spin of elementary particles and many atoms that are smallmagnets. An electric current I circulating in a wire of radius...
- Q I need an equation to calculate how much time a coil has to andcan remain active in a coilgun to reach a specific velocity. Incoilguns the coils must be disabled...
- Q Draw the diagrams for the a)two-probe and b)four-probemeasurement setups.(Include and label the sample being measured, the correctinput signal, and the correctmeasures signal). c)Describe the circumstances under whicheach of the above...
- Q A photographer in a helicopter ascending vertically at aconstant rate of 15.0m/s accidentally drops a camera out the windowwhen the helicopter is 54.0m above the ground.a)How long will the camera...
- Q A curve of radius 30 m is banked so that a 950 kg car travellingat40 km/h can go round it even if the road is so icy that thecoefficient of...
- Q Describe the lung cancer and how a CT scan has affected thediagnosis and/or treatment of this pathology over the years.
- Q Comets travel around the sun in elliptical orbits with largeeccentricities. If a comet has speed 1.8×104 m/s when ata distance of 2.6×1011 m from the center of the sun,what is...
- Q When a block is completely submerged under water, the buoyancyforce on it is 11.8N; when it is completely submerged under anunknown liquid, the buoyancy force is measured to be 7.8N....
- Q 1. A particle starts from rest, increasing its speed evenly,traveling a distance of 10.0 (m) in a time of 1.40 (s). From thatmoment it is kept at constant speed for...
- Q A coal-fired power plant uses 400 â—¦C steam to turn a turbine.Afterwards, the steam is condensed at a temperature of 25 â—¦C. Ifthe plant burns 1 million kg of coal...
- Q Consider the asymmetric 1/2 harmonic oscillator. use theVariational Principle to estimate the ground state energy of thispotential. Use as your trial function Axe^bx^2
- Q What would the electric force of the Moon on the Earthbe if the Moon had 10^52 electrons attracting an equal number ofprotons in the Earth? The Earth-Moon distance is 400,000km....
- Q Instructions: Provide full solutions to thefollowing problems:A propeller consists of two blades, each 3.00 m in length and witha mass of 120 kg. The propeller can be modeled as a...
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