Physics question and answers for July 29, 2023
- Q Two converging lenses with focal lengths of 40 cm and 20 cm are10 cm apart. A 3.0 cm -tall object is 15 cm in front of the 40 cm-focal-length lens....
- Q A thin film of soap solution (n = 1.33) has air on either sideand is illuminated normally with white light. Interference minimaare visible in the reflected light only at wavelengths...
- Q The figure below (Figure 1) illustrates an Atwood's machine. Letthe masses of blocks A and B be 3.50 kg and 2.00 kg, respectively,the moment of inertia of the wheel about...
- Q A peanut sits 8.0 cm away from the center of a turntable that isspinning at a rate of 200 rad/s. If it takes 15.0 s from theturntable to come to...
- Q 4) A proton is suspended in the air by an electric field wherethe acceleration due to gravity is g. What is the strength of thiselectric field?2) What is the value...
- Q One mole of an ideal gas undergoes a process where thepressure varies according toP = (-17.0 atm/m6) V2 + (32.5atm/m3) V + 1.80 atmwhere V is the volume. The volume...
- Q Thermodynamics and Statistical MechanicsProblem:You have just microwaved a cup of tea for too long and it isboiling, too hot to drink. You look around and see a punchbowlcontaining ice floating...
- Q A cylindrical copper rod of length 1.60 m and cross-sectionalarea 7.10 cm^2 is insulated to prevent heat loss through itssurface. The ends are maintained at a temperature difference of 100degrees...
- Q A pool ball moving at 5m/s makes an elastic collision with anidentical ball which is initially at rest. After the collision, oneball moves at an angle of 30o with respect...
- Q Fill in the blank ( can be used more than once)- Behind- Real- Virtual- Farsightedness- Long- Convex- Thickness- Concave- Retina- NearsightednessThe convex lens of a camera forms a ___ image....
- Q Define center of mass of a system of three particles. If theparticles are of different masses, how will the center of mass ofthe system move, explain
- Q A professor sits on a rotating stool that spins at 10.0rpm whileshe holds a 1.00-kg weight in each of her hands. Her outstretchedarms are 0.75m from the axis of rotation...
- Q A circular conducting loop of radius 25.0 cm is located in aregion of homogeneous magnetic field of magnitude 0.300 T pointingperpendicular to the plane of the loop. The loop is...
- Q A natural water molecule (H2O) in its vapor state has anelectric dipole moment of magnitude, p = 6.2 x 10-30 C.m. (a) Findthe distance of the positive and negative charge...
- Q A monatomic ideal gas has an initial temperature of 381 K. Thisgas expands and does the same amount of work whether the expansionis adiabatic or isothermal. When the expansion is...
- Q Using the kinematic data provided, calculate the masses, CoMcoordinates, and moments of inertia (about the proximal end of thesegment) for the foot and shank segments (mass: 48.1 kg) (knee:(0.268,0.499)) (ankle:...
- Q Consider an object whose initial displacement and velocity areboth equal to zero with respect to a reference point X. The objectaccelerates in a straight line away from X according to...
- Q A cylindrical steel tube 15.5 cm long and welded shut at one endholds 2.000 L at 23.0°C. It is completely filled with oil at23.0°C. The oil and the tube are...
- Q 1. Explain why you can maintain contraction of the hamstringmuscles over time.2. Explain why you can sustain the same contraction with a 5-lbweight attached to the ankle.3. Explain why the...
- Q Find the distribution of temperature inside a sphere of radius awhen the surface of the upper half is held at 100°C and the surfaceof the lower half at 0°C
- Q John was swimming in the river. His swimming velocity was 1.2m/s due east. The water was running at 0.4 m/s due west. John’sprojected area in the water was 0.45 m2....
- Q Describe the difference between an insulator and a conductor.What are some examples of each? Name some examples when you wouldwant to use each of them.
- Q Consider a particle with a charge-to-mass ratio of ?/? = 1moving in a uniform magnetic field of B = 1 Tesla applied inz-direction. At time t = 0 s, it...
- Q a) Explain the production of x-raysb) What is the typical energy range for Compton scattering andwhy?c) Why does pair production require a minimal energy and what isit?
- Q A 110-kg rugby player is sliding on a muddy field at a speed of2 m/s toward the right as a 82-kg player is slipping at a speed of3 m/s toward...
- Q An object is placed 12 cm in front of a diverging lens with afocal length of 7.9 cm.(a) Find the image distance and determine whether the image isreal or virtual.(b)...
- Q What is the energy released in this alpha decay reaction23090Th?22688Ra+42He90230Th?88226Ra+24He? (The atomic mass of230Th230Th is 230.033139 u and that of 226Ra226Ra is 226.025402u)
- Q A stonemason is dragging a 60-kg marble block 4 m across a floorby pulling on a rope attached to the block. He pulls with ahorizontal force of 210 N. The...
- Q Mark and his Harley Sportster has a combined mass of 950kg. a)Ignoring road and air friction, how much work is involved inaccelerating the motorcycle from 0 to 100km/hr.b) Mark claims...
- Q Estimate the number of Solar neutrinos passing through adetector on the Earth in one second. Assume that the detector has asurface area of 1.0 square meters and is aligned so...
- Q After a heavy snowfall, Annie wants to drag a sled loaded withtoys across her level backyard floor, by pulling a rope at an angleof 26 degrees up from the snowy...
- Q A ) A 2-?C point charge is embedded in the center of a solidPyrex sphere of radius R = 15 cm.(1) Calculate the electric field strength E just beneath thesurface...
- Q A) Plot the first five particle in a box wavefunctions for anelectron in a 10 Ã… box(starting at n = 1). Choose two of these and plot theirprobability density. Offer...
- Q 1. A pendulum with a length of 30 cm swings back and forth asshown in the figure above, at each turn around point it stops andit starts accelerating until reaching...
- Q A 190 Ω resistor, a 0.875 H inductor, and a 5.75 μF capacitorare connected in series across a voltage source that has voltageamplitude 32.0 V and an angular frequency of...
- Q 8. A cart slides down an inclined plane with the angle of theincline θ starting from rest. At the moment the cart begins tomove, a ball is launched from the...
- Q Explain (in detail) Nuclear Fission and Nuclear Fusion, why isone radioactive vs the other?What is the nuclear process in areactor (Fission, or fusion), and what kind of decays is it...
- Q Please use heat expansion formula s = r* theta The answer shouldbe a) 1.13 degrees b) 3212.1 CelsiusA bimetallic strip is made of copper and steel fused together.The length of...
- Q A spring is mounted over an air track in such a way that the oneend of the spring is fixed and the other is connected to a springscale. When the...
- Q For the 1S to 2P (Lyman α) transitions in the hydrogen atom,calculate the total integrated absorption cross section.
- Q If you go to a crafts store and buy “glitter beads,†you get alittle plastic tube of tiny, metal covered glass or plastic beads.On a nice dry day, you can...
- Q A 2.00 kg ball is thrown straightupward from the top of a 50.0 m high building with an initial speedof 10.0 m/s.      Given:      a. What is the total energy at the top...
- Q explain in detail einsteins theory of generalrelativity. how so black holes effect gravity according to histheory?how do,*
- Q Car A has a mass of 2000 kg and speed of 10 miles per hour. CarB has mass of 1000 kg and speed of 30 miles per hour. The two...
- Q Two kg of water is contained in a piston–cylinder assembly,initially at 10 bar and 200°C. The water is slowly heated atconstant pressure to a final state. If the heat transfer...
- Q 2: For this problem the heights are low enoughthat the acceleration due to gravity can be approximated as-g. (Note: even at low Earth orbit, such as the locationof the International...
- Q A satellite moves in a circular earth orbit that has a radius of7.49 x 106 m. A model airplane is flying on a 24.1-m guideline in ahorizontal circle. The guideline...
- Q Imagine a superfast fish that is able to swim faster than thespeed of sound in water. Would this fish produce a “sonicboom�Use the concepts from this module to explain why...
- Q 1. A 2.00 kg ball is thrown straight upward from the top of a50.0 m high building with an initial speed of 10.0 m/s. (25points)Â Â Â Â Â Â Given: (1 point)Â Â Â Â Â Â a. What...
- Q Describe the conditions which are favorable for ozonedestruction in polar regions. Include what occurs in polar springwhich causes the rather abrupt commencing of ozone destruction.What happens in polar summer that...
- Q Define the following in plasma physics : 1- Larmorradius or Gyro- radius2- Guiding-center3- adiabatic invariants4- first adiabatic invariant5- The magnetic flux  6- Harris field
- Q The pitot static system of Cessna 172 is used to determine theindicated airspeed at which the aircraft is flying. Determinationof airspeed on the airspeed indicator is based on using sea...
- Q Two eagles fly directly toward one another, the first at 15.0m/s and the second at 24.2 m/s. Both screech, the first emitting afrequency of 3643 Hz and the other one...
- Q Consider the ground state energy of the hydrogen atomE0.Enter the expression you use to verify that the ground stateenergy is 13.6 eV? Use fundamental constants e, me,k and h.E0 =...
- Q how much energy is needed to place four positive charges, eachof magnitude +5.0 mc, at the vertices of a square of side 2.5 cm?choose one way of assembling the charges...
- Q Fill in blank space with the following words:Black HoleLaw of Universal GravitationEfficiencyPowerWeightRotational SpeedTorqueA concentrated mass resulting from gravitational collapse nearwhich gravity is so strong not even light can escape is...
- Q a) If you have five capacitors with capacitances 1.1 ×10-6 F, 3.5 × 10-6 F, 5.5 × 10-6F, and two 8.6 × 10-6 F in series. Whatis the equivalent capacitance...
- Q Let’s look at some gravitational potentials and the densityprofiles that can generate them.i) For Ï(r) = Ïâ—¦r â—¦^2/r^2 , what is the correspondinggravitational potential?ii) For Φ(r) = −GM/[b + √...
- Q In this exercise, the first of a series, we will makeconnections between the physics you have been learning (in thiscase, kinematics) and how it is used by people in their...
- Q Two charged metal balls of a different size, radius R1 is biggerthan R2, and then connected by a wire. Which ball gets the largercharge? What about charge density? Prove the...
- Q One of the advantages of skates is that they allow you to pushagainst ice, whichtypically has low friction. Let’s consider an hockey player onfrictionless ice who isgoing to shoot a...
- Q A charge of -2.705 μC is located at (2.830 m ,4.456 m ), and a charge of 1.460 μC is located at (-2.757m , 0).Find the electric potential at the...
- Q Uniqueness theoremProve that the solution to the Laplace’s equation in a spatialregion is unique if the potential is specified on the surface ofthe region.
- Q True/False:Gravity is an example of inverse square behavior.A grindstone is rotating at constant rotational speed. There isa net torque on it.A lever multiplies a force but does not redirect it.On...
- Q If X, Y and Z are three arbitrary vectors, prove theseidentities:a. (X×Y).Z = X.(Y×Z)b. X×(Y×Z) = (X.Z)Y – (X.Y)Zc. X.(Y×Z) = -Y.(X×Z)
- Q How can a force (e.g., a muscle force or a gravitational force)produce a translatory and a linear force simultaneously?
- Q 1 .Identify type of image represented in the followinggraphic:Group of answer choicesRealVirtual2. Identify type of image represented in the followinggraphic:Group of answer choicesVirtualReal3. Identify the direction that the refracted beam...
- Q Suppose a photon is absorbed by the electron in a hydrogen atomin an n= 2 state. What wavelength should the photon have to enablethe electron to transition to the n=...
- Q A 54.0-kg woman stands at the western rim of ahorizontal turntable having a moment of inertia of490 kg · m2 and a radius of 2.00 m. Theturntable is initially at...
- Q Determine what fraction of the figure is shaded.(a)A four unit wide by four unit tall Geoboard is made up of 25points. A shape consisting of five connected line segments and...
- Q Figure outhow to test whathappens when the light rays come from underwater. Compare yourideas about whythings lookdifferent under water to how light rays appear to “bend.â€.
- Q A spherical shell is cut into two halves that remainforming thesphere, but are electrically isolated from each other at anegligible distance. The nortern hemisphere is at potential +V_0and the southernhemisphere...
- Q An 82.0 kg skydiver jumps out of a balloon at an altitude of 1100 m and opens the parachute at an altitude of 160 m.(a) Assuming that the total retarding...
- Q Is every galaxy in the universe rotating in the sameway as our solar system?
- Q Hydrogen is used in some semiconducting devices to improve theirperformance. Consider a material in which atomic hydrogen (H)diffuses at 1.8 × 10-24 m2/s at 329 K.1) When in use, the...
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!