Physics question and answers for August 23, 2023
- Q Two identical conducting spheres, fixed in place, attract eachother with an electrostatic force of -0.2532 N whenseparated by 50 cm, center-to-center. The spheres are thenconnected by a thin conducting wire....
- Q Water drips from the nozzle of a shower onto the floor 200 cmbelow. The drops fall at regular (equal) intervals of time, thefirst drop striking the floor at the instant...
- Q A ball is dropped from 2.00 and rebounds to a height of 1.75m.What is the maximum height it will achieve after bouncing 7 moretimes?
- Q berdine has developed cataracts in both eyes preventing her frombeing able to identify een her mothers face, berdine most clearlysuffers a deficiency in A)perceotual set b)sensory adaptationc)bottom-up processing
- Q A neon atom (m=20.0u) makes a perfectly elastic collision withanother atom at rest. After the impact, the neon atom travels awayat a 40.0 ? angle from its original direction and...
- Q The average coefficient of volume expansion for carbontetrachloride is 5.81 ? 10-4 (°C)-1. If a 40.5 gal steel containeris filled completely with carbon tetrachloride when the temperatureis 10.0°C, how much...
- Q High-altitude mountain climbers do not eat snow, but always meltit first with a stove. To see why, calculate the energy absorbedfrom a climber's body under the following conditions. The specificheat...
- Q ?V.I. Arnold Mathematical Methods of Classical Mechanics SecondEdition Page 50?Determine the major semi-axis of the ellipse which the center ofthe earth describes around the common center of mass of the...
- Q If the cross-sectional area of the manometer is 10cm2 and the amount of water added is 50 ml, what will bethe height difference between the two arms of the manometer?
- Q How do the following types of radiation interact withmatter?a) radio wavesb) microwavesc) infaredd) visible lighte) ultraviolet, x-rays and gamma rays-a) How do wavelength and frequency change as you movethrough the...
- Q Use the quantum particle wavefunctions for the kinetic energylevels in a onedimensional box to qualitatively demonstrate that the classicalprobability distribution(any value of x is equally allowed) is obtained for particles...
- Q A box of physics books slides down a ramp inclined at an angleof 40 degrees to the horizontal. The total length of the ramp is10m. The coefficient of kinetic friction...
- Q 1. Please answer the following questions.    ?What is equipartition principle? Why isthe latent heat of vaporization     for water so much larger than thelatent heat of fusion?    ?Describe the Gauss's Law. If our spaceis...
- Q Ina nuclear fusion reactor two nuclei of deuterium merge, forming anucleus of helium. The mass of the deuterium nucleus, expressed inunits of atomic mass (u), is 2.0136u and of the...
- Q Choose an everyday object or system, and explain howmodulation ideas can be applied to understand how that objectworks.You must include a minimum or 2 paragraphs.Do not copy from internet and...
- Q a. Explain why the Fourier analysis of a square wave showsthat modulation is needed to send data (or why we cannot sendsquare pulses with regular wires).b. Why do we use...
- Q ? Explain why entropy in an isolated system must reach itsmaximum. Biological system use energy (ultimately from the sun) inorganizing highly ordered organisms, such as humans. Does this meanthat biological...
- Q Imagine you have two converging lenses. Lens A has a focallength of 12.5 cm. Lens B has a focal length of 50.0 cm. Thediameter of each lens is 6.50 cm....
- Q Derive the exponential expression that describes the radioactivedecay in the number of nucleotides, N over a time, t. Give anexample of another physical phenomenon which is described by anexponential relationship...
- Q (a) Describe the nuclear processes of alpha and beta decay, anddescribe what parameter is increasing in the nucleus as a result ofthese decays. [3] (b) Where a stationary neutron combines...
- Q Present an application of a wave phenomena to studies in a fieldof science or engineering other than physics. Your examples may betaken from, but are not limited to, sound engineering,...
- Q Choose true or false for each statement regarding concavemirrors.true false  If an object is placed 4.1 cm from a concavemirror with f = 4 cm, then its image will be enlarged...
- Q Magnetic flux lines, by itself, is not very useful. You can’tsee them. You can’t touch them. They can’t be detected by sensors.So, by themselves, they are not very useful. Yet,...
- Q A 4.0-cm-diameter parallel-plate capacitor with a 1.0 mm spacingis charged to 1000 V. A switch closes at t =0s, and thecapacitor is discharged through a wire with 0.20? resistance.Part AFind...
- Q Singly ionized (one electron removed) atoms are accelerated andthen passed through a velocity selector consisting of perpendicularelectric and magnetic fields. The electric field is 160 V/m and themagnetic field is...
- Q Why can you electroplate using metals like copper or silver butnot materials like carbon or oxygen? (Hint: Look up the differencebetween metals and non-metals.)
- Q Consider a beam of light passing from air into glass (refractiveindex 1.5) at an angle of 30 degrees from vertical. Calculate- The angle of the reflected light- The angle of...
- Q Two vehicles are approaching an intersection. One is a 2300 kgpickup traveling at 13.0 m/s from east to west (the ?x- direction),and the other is a 1300 kg sedan going...
- Q Four traveling waves are described by the following equations,where all quantities are measured in SI units and yrepresents the displacement.Which of these waves have the same speed?     I:    y = 0.12 cos(3x...
- Q Q3a.Define the specific heat capacity, and state its units.b.A Cu bar, 0.5 m long and 1 cm in thickness, is placed in astream of boiling water at one end, and...
- Q When do we use I=P/a or I=P/4pi(r)^2?for example question 1:30 seconds of exposure to 115 dB sound can damage your hearing,but a much quieter 94 dB may begin to cause...
- Q 1.(a)Define what are Crystalline Solids and Amorphous Solids?(b)Explain, with a two-dimensional representation, the amorphous andcrystalline forms of SiO2?(c)The density of matter largely depends on the atomic weight of theatoms and...
- Q 1(a)Draw a schematic representing a dislocation, in 2D.(b)Describe what is meant by work-hardening? Explain with anexample.(c)Assume you are stretching a bar of metal that undergoes workhardening. What would the Stress...
- Q A kettle is filled with tap water and placed on a stove. Thestove element is turned on. Explain why the water starts to boilafter a while.
- Q Derive the Maxwell construction by considerations involving theminimization of the Gibbs potential instead of the Helmholtz freeenergy.Please help me...
- Q Start with an ideal gas of volume 4m^3, at a pressure of 1200Pa,and temperature 289K. Construct a cycle using 3 or more processes(of your choice). For each process in your...
- Q 12. How is constructed the deformationtensor?
- Q You are pushing against the ground as you begin to leap into theair (but you are still in contact with the ground). (a) Are youaccelerating as you begin your leap?...
- Q My son has been wondering about this question: when we freezemilk it changes colour � from white to yellow. Why is this?
- Q A small city requires about 10 MW of power. Suppose that insteadof using high-voltage lines to supply the power, the power isdelivered at 120 V.Assuming a two-wire line of 0.48?cm...
- Q A point charge of -1.5 µC is located at the origin. A secondpoint charge of 10 µC is at x = 1 m, y = 0.5 m. Find the x...
- Q In the Olympic shot-put event, an athlete throws the shot withan initial speed of 13.6 m/sm/s at a 40.0 ∘∘ angle from thehorizontal. The shot leaves her hand at a...
- Q If the radius of the equipotential surface of point charge is15.2 m at a potential of 2.30 kV, what is the magnitude of thepoint charge creating the potential?
- Q 1.) Your friend is catching a falling basketball after it haspassed through the basket. Her hands move straight down whilecatching the ball. Take that it takes about 0.10 s for...
- Q Q.1) Projectile motion:A stone is thrown vertically into the airoff the edge of a bridge 150ft above a river. If the initialvelocity of the rock is 64ft/sec (upward0 and the...
- Q 1. The electric field generated by a point charge has strengthof 180000n/c at a point 1.50 cm from the point charge what is thecharge if the field points towards the...
- Q After discovering that two hikers have been stranded on Devil'sThumb Pass, the Colorado Search andRescue team sends out a plane with supplies for the hikers.Because the hikers are in an...
- Q Two small metallic spheres, each of mass m = 0.210 g,are suspended as pendulums by light strings of length L asshown in the figure below. The spheres are given the...
- Q (a) Two point charges totaling 7.50 µC exert a repulsive forceof 0.150 N on one another when separated by 0.812 m. What is thecharge (in µC) on each? smallest charge...
- Q A softball is hit over a third baseman's head with speedv0 and at an angle θ from the horizontal.Immediately after the ball is hit, the third baseman turns aroundand runs...
- Q A car initially traveling at 25.7 m/s undergoes a constantnegative acceleration of magnitude 1.80 m/s2 after itsbrakes are applied.(a.) How many revolutions does each tire make before the carcomes to...
- Q The coefficient of expansion for liquidsis:a) greater than that for solidsb) different for different temperaturesc) smaller as the volume changesd) greater as the volume changes
- Q What is the difference between phase velocity and phaseangle?
- Q What theoretical explanations exist for the fact that there arethree generations of leptons and quarks?I'm not so much asking why there are exactly 3 generations, butrather what makes electron, muon...
- Q 3. A cube of Brass (B = 70 GPa) measuring 1.0 m on each side issubmerged under water. It is lowerd to a depth where a force \"F\" isacting perpendicularly...
- Q 1. Explain the physical reason that this change in Planck'sexpression avoided the ‘Ultraviolet Catastrophe’.2. Calculate the probability of finding the particle within thefinite wall of the box when the particle...
- Q What does the radioactiv decay law say? Write the formula andexplain symbols.
- Q Every second at a particular waterfall, some 6996 m3of water falls a distance of 37 m. What is the increase in entropyin kJ/K, per second due to the falling water?...
- Q part a ) A person throws an object with mass m nearlyvertically with an initial momentum p=(px,py,pz). With respect tothe cartesian coordinate system where the person is looking in thedirection...
- Q what is the discussion and conclusions for the trajectoriesphysics lab?
- Q OSHA, the Occupational Safety and Health Administration, hasestablished shandards for workplace exposure to noise. According toOSHA's Hearing Conservation Standard, the permissible noiseexposure per day is 93.0 dB for 4 hours...
- Q A shot putter threw a shot at an angle of 43o above thehorizontal from a height of 2.0 m above the ground. The shottraveled 19.0 m horizontally from the launch...
- Q The position of a particle is given by x = 1/3t3 - 2t2 and y =1/2t2 - 2t. Positions are in meters and time is in seconds.Complete the following table....
- Q A cart of mass m1 = 11 kg slides down a frictionless ramp and ismade to collide with a second cart of mass m2 = 24 kg which thenheads into...
- Q 1)During a thunderstorm, a lightning \"bolt\" carries currentbetween a cloud and the ground below. If a particular bolt carriesa total charge of 39 C in 1.2 ms, what is the...
- Q A spring-loaded gun fires a 0.080-kg puck along a tabletop. Thepuck slides up a curved ramp and flies straight up into theair.(a) If the spring is displaced 24.0 cm from...
- Q A Parasail rider wants to reach the maximum height allowed bythe Federal Aviation administration... A Parasail rider wants toreach the maximum height allowed by the Federal Aviationadministration if the rider’s...
- Q A positive charge 1.1X10-11 C is located10-2 m away from a negative charge of the samemagnitude. Point P is exactly half way between them --what is the Efield at point...
- Q In a rectangular coordinate system, a positive point charge q =8.00 nC is placed at the point x = +0.150 m, y = 0, and anidentical point charge is placed...
- Q A) The resistivity of blood is related to its hematocrit, thevolume fraction of red blood cells in the blood. A commonly usedequation relating the hematocrit h to the blood resistivity...
- Q A flint glass plate (n = 1.66) rests on the bottom ofan aquarium tank. The plate is 10.00 cm thick (vertical dimension)and covered with water (n = 1.33) to a...
- Q A sample of ideal gas is placed inside a balloon at roomtemperature. The balloon is then put inside a freezer, where itdeflates without losing any of the gas inside it....
- Q The most basic explanation for the Heisenberg UncertaintyPrinciple is that the momentum and position of a quantum particleis not very distinct when an attempt is made to measure themtogether. But...
- Q Chose the right answera) If we decrease the size of a quantum dot that contains anelectron, what happens to the energy levels?1-Decrease2-remain the same3-increaseb) If two quantum states are degenerate,...
- Q A cylinder, which is in a horizontal position, contains anunknown noble gas at 48400 Pa and is sealed with a massless piston.The piston is slowly, isobarically moved inward 18.9 cm,...
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