Physics question and answers for September 21, 2023
- Q Hooke's LawObjective: To verify Hooke’s law that the extension of a springis proportional to the stretching force applied once the elasticlimit is not exceeded.a) Mention at least three important precautions...
- Q Three children are riding on the edge of a merry-go-round thatis 122 kg, has a 1.60 m radius, and is spinning at 15.3 rpm. Thechildren have masses of 19.9, 29.0,...
- Q Use the following data to determine the maximum rate at which astandard man can climb a mountain: Blood contains 16.0 wt%hemoglobin (with molecular weight 65,000 g/mol). Each hemoglobinmolecule can carry...
- Q A “friend†borrows your favorite compass and paints the entireneedle red. You discover this when you are lost in a cave and havewith you two flashlights, a few meters of...
- Q A 100 g ball moving to the right at 4.0 m/scollides head-on with a 200 g ball that is moving to theleft at 3.0 m/s.If the collision is perfectly elastic,...
- Q A ball is held at rest at some height above a hard, horizontalsurface. Once the ball is released it falls, hits the surface, andstarts bouncing vertically up and down. Suppose...
- Q An 80 kg man stands in a very strong wind moving at 15 m/s attorso height. As you know, he will need to lean in to the wind, andwe can...
- Q True or false: The quantity represented by ω0 is a function oftime (i.e., is not constant).True or false: The quantity represented by ω is a function oftime (i.e., is not...
- Q A 144-g baseball moving 29 m/s strikes a stationary 5.25-kgbrick resting on small rollers so it moves without significantfriction. After hitting the brick, the baseball bounces straightback, and the brick...
- Q You drop a steel ball bearing, with a radius of 3.40 mm, into abeaker of honey. Note that honey has a viscosity of 6.00 Pa/s and adensity of 1360 kg/m3,...
- Q 4) Mass 1 is initially moving at 3 m/s in the +x direction andit collides perfectly elastically with mass 2 moving at 10 m/s inthe -x direction. After the collision,...
- Q A beam of light in air is incident at an angle of 24.0° to thesurface of a rectangular block of clear plastic ( n =1.46). The light beam first passes...
- Q Because movie producers have come under pressure for teachingchildren incorrect science, you have been appointed to help acommittee of concerned parents review a script for a new Supermanmovie. In the...
- Q Explain what thegreenhouse effect is and discuss the cause and consequences of thisto the planet. What evidence is there to show that“global warming â€has been the worst in the last...
- Q Calculate the final speed of an object dropped on Earth fromaltitude of 8 times the radius of Earth. (hint: neglectfrictiondue to atmosphere and use expression of gravitational potentialenergy and principle...
- Q A trough is 11m long, 5m wide, and 3m deep. The verticalcross-section of the trough parallel to an end is shaped like anisoceles triangle (with height 3m, and base, on...
- Q 5. For all setups, use a focal length of 2cm and place a realobject to the left of the lens. For each case a-f:i. Draw the ray diagram using principal...
- Q Light can be seen through glass, water, and other transparentmaterials. When light is incident on a transparent material (suchas water) at an angle, which of the following are true? (Select...
- Q Comment with a briefexplanation whether the following statements are true or false:1. The wavelength ofan electron moving with a velocity of 1.1*10^6 m/s is 6.6 nm.2. In photoelectriceffect, whether an...
- Q 1)What is the force between two equal charges (1 Coulomb) thatare separated by a distance of 1 km? 2)Suppose that the charge ofone of the charges in problem #1 is...
- Q 1. Describe the basics of an astronomical telescope usinglight-ray diagrams.2. What is the formula fr the magnification of an astronomicaltelescope made of lenses with focal lengths F_0 and F_e? Provide...
- Q A wheel, starting from rest, rotates with a constant angularacceleration of 1.40 rad/s2. During a certain 6.00 sinterval, it turns through 36.6 rad. (a) How longhad the wheel been turning...
- Q PART AA lens with two convex surfaces, both with radii of curvature of0.25 meters, is used to focus light. If the lens is made of crownglass, it would have an...
- Q A 0.30-kg puck, initially at rest on a frictionless horizontalsurface, is struck by a 0.20-kg puck that is initially moving alongthe x-axis with a velocity of 8.6 m/s. After thecollision,...
- Q Two satellites are in circular orbits around the earth. Theorbit for satellite A is at a height of 458 km above the earth’ssurface, while that for satellite B is at...
- Q The steel pipe (100 mm outer diameter) is covered withtwo layers of insulation. The 40 mm thick inner layer has a thermalconductivity of 0.07 W / (mK). Outer layer, 20...
- Q Briefly summarize Immanuel Kant's view of how the Solar Systemformed.How does this viewpoint reflect Kant's overall view of scienceand what are some of the restrictions that Kant places on thescientific...
- Q Problem 2. In diffraction experiments involving multiplewavelengths of light passing through the same aperture, the higherorder maxima of one wavelength can coincide with a lower ordermaxima of a longer wavelength....
- Q An object with total mass mtotal = 14.9 kg is sitting at restwhen it explodes into three pieces. One piece with mass m1 = 4.8 kgmoves up and to the...
- Q Visible light passes through a diffraction grating that has 900slits per centimeter, and the interference pattern is observed on ascreen that is 2.80m from the grating. In the first-order spectrum,maxima...
- Q Q1-Assume momentum is conserved in this case.A cart of mass 0.509kg is moving on a friction balanced trackwith a speed 0.43m/s. It then collides with another cart of mass0.546kg that...
- Q A block of mass m2 = 15 kg on a rough 30°-inclined plane isconnected to a 5-kg mass (m1) by a string of negligible masspassing over a pulley that is...
- Q A 15 g bullet is fired at 650 m/s into a 4.7 kg block that sitsat the edge of a 80-cm-high table. The bullet embeds itself in theblock and carries...
- Q we examined the concept of friction and how it affectseverything we do. Air resistance is an important type of frictionthat you don’t want to forget about as you prepare your...
- Q We often think about two-dimensional motion in terms of aprojectile, like someone throwing a ball up in the air. Consider,instead, the surface of an air-hockey table, where the puck travelshorizontally...
- Q Q1:Â Â Find the final angular velocity if a grindingwheel starts from rest and accelerates at 2 rad/s^2.Q2:Â Â If the grinding wheel has a mass of 60kg:a) Find its rotational inertia.b) Find the...
- Q M1 has a mass of 6.330 kg. It is on a horizontal surfaceconnected by a massless string to a hook where M2 can be increasedsmoothly. The pulley has a negligible...
- Q What is the total power output of our Sun (i.e. the energyoutput per second)? (a) Assume all of power is released fromnuclear reactions, how much mass is the Sun currently...
- Q 2. A 50 gram steel ball hangs from a 15 cm long string. The ballis brought back to an angle of 15 degrees from vertical at thebottom of the swing...
- Q There is a typical elliptical galaxy that has a velocitydispersion that is high.a. relatively, what's its stellar mass?b. Compared this galaxy to a galaxy with a lower velocitydispersion but the...
- Q Problem 2 A block of mass 1 kg is sitting on top of a compressedspring of spring constant k = 300 N/m and equilibrium length 20 cm.Initially the spring is...
- Q A particle of mass m is confined to a finite potential energywell of width L. The equations describing the potential areU=U0 x<0U=0 0 < x < LU=U0 x > LTake...
- Q Write 7-10 sentences describing how the three different types ofheat transfer apply to the human body (both externally andinternally).  Be sure to describe how this is helpful (orharmful) to our survival....
- Q 1. Cecil wants to be able to leap tall doghouses in asingle bound while wearing her Super Dog costume. Cecil can almostjump up to the roof of her doghouse now....
- Q 1. What things are important in determining the hydrostaticpressure at the bottom of a liquid filled vessel?2. What levels of pressure can be found in the deepest parts ofthe earth's...
- Q A compact disk, which has a diameter of 12.0 cm, speeds upuniformly from zero to 4.30rev/s in 3.15s .Part AWhat is the tangential acceleration of a point on the outer...
- Q Children are playing a game of ice hockey on a frozen lake. Oneof the children throws a 1200g water bottle with velocity 0.4 m/sto another kid, weighing 41 kg, sitting...
- Q Suppose you have a system of two masses strung over a pulley.Mass 1 (6.7 kg) hangs on the right side of the pulley suspendedover the ground at height 1.2 m....
- Q problem 1. You notice that a string fixed atboth ends produces standing waves at 440 Hz and 660 Hz, but not atany frequency in between.a.What harmonics do these two frequencies...
- Q Coloured objects, red ones, blue ones, whatever. For this purpose,one assumes that light is waveforms as opposed to particles ofenergy. Traditional theories state that a green object appearsgreen because it...
- Q 1.16 [1pt] Consider an infinite non-conducting plane having acharge density of 1 C/m^2. Sketch electric field lines and indicatethe value of electric field 1 m away from the plane1.16 ANSWER1.17...
- Q A cylinder with rotational inertia I1 = 2.6 kg · m^2rotates clockwise about a vertical axis through its center withangular speed ω1 = 5.8 rad/s. A second cylinder withrotational inertia...
- Q 1.12 [2pt] Consider one infinitely long straight wire with auniform charge density of 1 C/m. Sketch the electric field aroundthe wire1.12 ANSWER1.13 [2pt] In problem 1.12, calculate the magnitude of...
- Q A short section of coaxial cable consists of a line currentalong the z-axis from z = -L to z = L carrying current ?0?Ì‚surrounded by a hollow cylindrical shell (centered...
- Q A brine solution with a density of 1230 kg/m3 movesthrough a constricted pipe in steady, ideal flow. At the lowerpoint shown in the figure below, the pressure isP1 = 2.00...
- Q In visible light, which color has the longestwavelength?'Are Microwave, Visible Light, Gamma rays in order of lowest tohighest energy?are Radio broadcast, cell phone and GPS examples of technologiesthat uses radio...
- Q Each of the two identical springs in the figure below has forceconstant k = 1.16 103 N/m, d = 1.21 m, and θ = 29.0°. (a) Find theunstretched length of...
- Q A charge of 3.77 μC is held fixed at the origin. A second chargeof 3.45 μC is released from rest at the position (1.25 m, 0.570m).A.) If the mass of...
- Q The blood speed in a normal segment of a horizontal artery is0.100 m/s. An abnormal segment of the artery is narrowed down by anarteriosclerotic plaque to 1/5 of its normal...
- Q An object with mass 0.190 kg is acted on by an elastic restoringforce with force constant 10.3 N/m. The object is set intooscillation with an initial potential energy of 0.150...
- Q 1. In your own words, explain why Einstein's \"greatest blunder\"is no longer considered a blunder.
- Q 7. An inductor is designed to filter high frequency noise frompower supplied to a personal computer. Do you connect the inductorin series or in parallel with the computer? Explain.Please explained...
- Q In music, middle C has a frequency of about 256 Hz - the precisefrequency depends on the tuning scheme. How does the wavelength ofa middle C note propagating through air...
- Q Neutron interactions[5marks] Calcu late the m aximum energy transfer of a 2 MeV neutronvia an elastic scatterin g collision with 1 H and 12 C nucle i,respectively.[5marks] Calculate the number...
- Q A stick is resting on a concrete step with 2727 of its totallength ?L hanging over the edge. A single ladybug lands on the endof the stick hanging over the...
- Q At what distance on the axis of a current loop is the magneticfield half the strength of the field at the center of the loop?Give your answer as a multiple...
- Q When a 26.0-V emf device is placed across two resistors inseries, a current of 11.0 A is flowing in each of the resistors.When the same emf device is placed across...
- Q At the rate at which the Sun is losing mass in the solar wind,how many years will it take the Sun to lose as much mass asUranus?It will take ___...
- Q The accelerating force of the wind on a small 300-kg sailboat is780 N northeast. If the drag of the keel is 552 N acting west, whatis the acceleration of the...
- Q The uncorrected eye. For the following questions, assume thatthe distance between the eye lens and the retina is 1.70 cm. Inother words, since the image is always formed on the...
- Q Two children, A (mass 25 kg ) and B (mass 50 kg ), are playingon a merry-go-round (which you can assume is a solid disk with mass225 kg and...
- Q 1. If you have the same mass of water in a bathtub at the sameinitial temperature your hot bath will last ______ if you weresomehow able to increase the specific...
- Q Light incident at Brewster’s angle is reflected and fullypolarized. What are some ways this can be used to generate linearpolarized light? Compare this method to polarizers.
- Q A hollow, spherical shell with mass 1.80 kg rolls withoutslipping down a slope angled at 40.0 ∘.Part AFind the acceleration.Take the free fall acceleration to be g = 9.80 m/s2partBFind...
- Q A 20-cm-radius ball is uniformly charged to 62 nC .A. What is the ball's uniform charge density (C/m3)?B. How much charge is enclosed by spheres of radii 5, 10, and...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!