Physics question and answers for September 07, 2023
- Q This table below provides approximate values for theintracellular and extracellular concentrations in unit mmol/L forsodium, potassium, and chlorine ions in a frog muscle with aresting potential difference of −98 mV...
- Q A 510-turn solenoid has a radius of 8.00 mm and an overalllength of 14.0 cm. (a) What is its inductance? (b) If the solenoidis connected in series with a 2.50-?(ohm...
- Q Radioactive Half Life of Barium-137m: Are thedetected activity and actual activity of the source Identical? Whatdifference would this make in the analysis of the data?
- Q Ask Your Teacher A scale reads 344 N when a piece of nickel ishanging from it. What does it read (in N) when it is lowered sothat the nickel is...
- Q In an experiment designed to measure the speed of light, a laseris aimed at a mirror that is 47.5 km due north. A detector isplaced 116 m due east of...
- Q True or FalseThe magnetic field at a radial distance R from a current element idl is a maximum when the current element direction is at rightangles to the radial line.Induced...
- Q A motorcycle is following a car that is traveling at constantspeed on a straight highway. Initially, the car and the motorcycleare both traveling at the same speed of 18.0m/s ,...
- Q During 0.24 s, a wheel rotates through an angle of 2.42 rad as apoint on the periphery of the wheel moves with a constant speed of2.48 m/s. What is the...
- Q An old car battery that has an emf of e m f1 = 11.5 V and aninternal resistance of 55.0 mΩ is connected to an R = 2.00 Ωresistor. In...
- Q A box of mass m=19.0 kg is pulled up a ramp that is inclined atan angle θ=15.0∘ angle with respect to the horizontal. Thecoefficient of kinetic friction between the box...
- Q With the use of diagrams, explain why the slit width of a prismwavelength selector must be varied to provide constant effectivebandwidths (specific wavelengths) but a constant slit width insteadcan be...
- Q A cart starts from rest at the top of a roller coaster that is40 meters high. It descends down the first hill all the way toground level before heading into...
- Q Describe the pendulum’s physical location when the position iszero? When it has the largest positive value?Describe the pendulum’s physical location when the velocity iszero? When is has the largest positive...
- Q Barium has a work function of 2.48 eV. What is the maximumkinetic energy of electrons if the metal is illuminated by UV lightof wavelength 420 nm?eVWhat is their speed?m/s
- Q You are the science officer on a visit to a distant solarsystem. Prior to landing on a planet you measure its diameter to be17000 km and its rotation period to...
- Q Sketch the wave-function of the ground state of a particle ofmass m which is con- fined in one dimension within a squarepotential well of infinite height, centred at x =...
- Q A rocket is launched straight up. It contains two stages (Stage1 and Stage 2) of solid rocket fuel that are designed to burn for10.0 and 5.0 s, respectively, with no...
- Q A 26 g ice cube at -15.0oC is placed in 204 g of water at48.0oC. Find the final temperature of the system when equilibriumis reached. Ignore the heat capacity of...
- Q A speeding motorist zooms through a 50 km/h zone at 75 km/h (21m/s) without noticing a stationary police car. The police officerimmediatley heads after the speeder, accelerating at 2.5m/s^2. Whenthe...
- Q Please read the article below (copy into your addressbar, in case you dont undersatnd how internet works):https://physicsinfootballgrade11bcss.weebly.com/energy-work-power.htmlAnd provide a 250 word summary of the article and how it appliesto the...
- Q A 2 cm high object is positioned 5 cm to the right of aconverging lens (f= +3 cm). A diverging lens (f= -15 cm) is located10 cm to the left...
- Q Imagine you fill an insulated cup almost full with chopped orcrushed ice, and measure the temperature after a minute or two,once it’s all come to thermal equilibrium. Since this ice...
- Q A photon with an initial wavelength of 1.070
- Q Find the difference in the apparent acceleration of gravity atthe equator and the poles, assuming the earth is spherical.
- Q how do newton's three law of motion apply to anautomobile? please include friction in your discussion.
- Q A 55.4 ? resistor is connected in series with a 16.2 microFcapacitor and a 60 Hz, 140 V source.a) Find the current in the circuit. Answer in units of mA.b)...
- Q 5c.Milly (mass 60.9 kg) runs at 4.11 m/s along the positivex-axis and then jumps onto a stationary 112 kg box. Millyand the box slide across the floor for distance 0.244...
- Q Why shift to digital television from analog? What are theshortcomings of analog TV and what are some of the advantages ofdigital? The specifications of digital television are set by theATSC....
- Q 1. Please answer the following questions.? What is the origin of electric resistance in material? Pleasegive an argument to explain why capacitance depends on the geometryof the capacitor. (5%)? Is...
- Q The energy we require to live comes from the chemically storedpotential energy in food, which is transformed into other energyforms during the metabolism process. PHS 1120, Principles of ModernPhysical Science...
- Q A motorcycle officer hidden at an intersection observes a cardriven by an oblivious driver who ignores a stop sign and continuesthrough the intersection at constant speed. The police officertakes off...
- Q A 1.0 kg ball and a 2.0 kg ball are connected by a 1.0-m-longrigid, massless rod. The rod is rotating cw about its center ofmass at 19rpm .What torque will...
- Q A weather balloon measures a temperature of 11°C and a mixingratio of 12.5 g kg^-1 at 850 hPa. Twenty-four hours later, thepassage of a dryline has left the same location...
- Q Texas rancher wants to fence off his four-sided plot of flatland. He measures the first three sides, shown asA, B, and C inthe figure below, whereA = 4.15 kmand?C =...
- Q a) What is the minimum index of refraction of a clear materialif a minimum thickness of 122 nm , when laid on glass, is needed toreduce reflection to nearly zero...
- Q For the system of four capacitors shown in the figure below,find the following. (Use C1 = 1.0
- Q A block attached to a spring is displaced from equilibrium tothe position x=+1.3m and released. The period is 2.6s. At whatpositions and times during the first complete cycle do thefollowing...
- Q An RLC series circuit has a 2.50 Ω resistor, a 100 µH inductor,and an 87.5 µFcapacitor.(a)If the voltage source is Vrms = 5.60 V , what is the Irms at...
- Q Use the exact values you enter to make later calculations.A ray of light strikes a flat, 2.00-cm-thick block of glass(n = 1.57) at an angle of ? = 31.2
- Q ) A 1.53-kg bucket hangs on a rope wrapped around a pulley ofmass 7.07 kg and radius 66 cm.  This pulley isfrictionless in its axle, and has the shape of...
- Q In a local bar, a customer slides an empty beer mug down thecounter for a refill. The height of the counter is 1.10 m. The mugslides off the counter and...
- Q Carnot Engine questions: What was the full name of the man whoimagine the first Carnot Engine? What thermodynamic theory did heuse to calculate its efficiency? Describe a Carnot engine, in...
- Q What is the maximum weight that can be suspended on a 25kg poll,3/5 from the end? The maximum tension of the 30 degree guy-wire is1500N. Find the horizontal and vertical...
- Q An alpha particle is a nucleus of helium. It has twice thecharge and four times the mass of the proton. When they were veryfar away from each other, but headed...
- Q ESSAY TYPE QUESTION:   DefineNewton’s three laws of motion, and explain what they representcollectively. Also provide at least one real life example of one ofNewton’s laws. Some questions could further be...
- Q a person throes a vall upward ibti the air from a roof railingwith an initial velocity of 15m/s. calculate at what timf afterbeing released, the ball passes a point 8...
- Q In no less than 250 words, explain clearly how a capacitorgets charged when a battery is applied to the capacitor?
- Q 2) A steel rod with a cross-sectional area of 0.25 sq. in. isstretched between two fixed points. The tensile load at 70 degreesF is 1200 lb. What will be the...
- Q 1. Write a couple (2) of paragraphs describing theorigin of both the continuous background spectrum and the darklines in the solar spectrum.
- Q The Sun rotates around the center of the Milky Way Galaxy (thefigure below (Figure 1)) at a distance of about 30,000 light-yearsfrom the center (1ly=9.5×1015m). 1.If it takes about 200...
- Q (1) Radio waves and light are electromagnetic waves andtransverse waves that can operate in a medium or in space.What is an Aether or ether?Upon which medium does sound travel the...
- Q physical therapists are often contracted to certify thatfirefighters are able to do task that model what they must be ableto do when firefighting. in one task, a firefighter must thrust...
- Q One of the many isotopes used in cancer treatment is gold19879Au, with a half-life of 2.70 days.Determine the mass of this isotope that is required for an activityof 213 Ci.
- Q A person with mass m= 70 kg takes the elevator to the top of theEmpire State Building at a height of 300 m. Assum the elevatortakes 1 min to reach...
- Q Explain why the resonance frequency is a double of thedriven frequency of the signal generator.
- Q part a) When a 5.0-μF capacitor is connected to agenerator whose rms output is 31 V, the current in the circuit isobserved to be 0.25 A. What is the frequency...
- Q A motorcycle is following a car that is traveling at constantspeed on a straight highway. Initially, the car and the motorcycleare both traveling at the same speed of 21.0 m/s...
- Q In the Bohr model, the Paschen series of spectral lines iscaused by radiation absorbed or emitted as an electron transitionsbetween the 2nd excited state and any higher excited state (3rdexcited...
- Q An 8kg mass is observed traveling with a speed of .08*c.What is its classical momentum?What is the relativisitic momentum?What is the difference between the two values?Repeat the problem for a...
- Q A see-saw made from 4 meter board sits on a pivot at its center.A child weighing 280 N sits 1.75 m away from the center. A secondchild who weighs 330...
- Q If you travel by starship to the center of the galaxysuch that you arrive within a subjective human lifespan, how muchradiation damage will you suffer from the interstellarvacuum?Assume special relativity...
- Q Hector read that the traditional drink in Tibet is tea withadded butter. Inspired by this idea, he decides to investigate howa thin layer of fat on the top of a...
- Q Two cars collide at an intersection. Car A, with a mass of 2000kg , is going from west to east, while car B, of mass 1300 kg , isgoing from...
- Q A +7.50 μC point charge is sitting at the origin.What is the radial distance between the 500 V equipotentialsurface and the 1000 V surface?What is the distance between the 1000...
- Q Who discovered that thunderstorms give out electricity? Can youexplain this process scientifically?
- Q Describe how factors such as mass and distance affect the force ofgravity throughout the universe.
- Q Which of the following statements are true for an atom with 3energy levels? You can choose more than one answer.When atomic electrons are excited to a higher level, they alwaysreturn...
- Q A point charge 4.20 μC is held fixed at the origin. A secondpoint charge 1.40 μC with mass of 2.80×10−4 kg is placed on the xaxis, 0.260 m from the...
- Q In an inkjet printer, letters and images are created by squirtingdrops of ink horizontally at a sheet of paper from a rapidly movingnozzle. The pattern on the paper is controlled...
- Q Suppose that each component of a certain vector isdoubled.Part ABy what multiplicative factor does the magnitude of the vectorchange?Express your answer using one significant figure.A2 =nothingA1SubmitRequest AnswerPart BBy what multiplicative...
- Q Long, long ago, on a planet far, far away, a physics experiment wascarried out. First, a 0.210-kgball with zero net charge was dropped from rest at a height of1.00 m.The...
- Q 16g of nitrogen gas at STP are pressurized in an isochoricprocess to a pressure of 25atm .A-What is the final temperature?B-What is the work done on the gas? W=0 I...
- Q Consider a pipe that is closed at one end. Sketch the standingwave pattern in each of the following situations; showing theregions of high and low air pressure variations (pressure antinodesand...
- Q A large crate is suspended by a light string. A bullet is firedhorizontally into the crate and becomes firmly lodged inside it.After being struck by the bullet, the crate swings...
- Q What is the Electromagnetic spectrum?What’s the composition of sun ?What are the Einstein special and general theories ofrelativity?What is the Einstein mass-energy equivalence?Spectral classes of stars ?What is the main...
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