Physics question and answers for October 06, 2023
- Q In your own words describe the rotation of the earth andits revolution around the sun in terms of the Foucault Pendulumexperiment and parallax and the aberration ofstarlight.
- Q Thinking about the 2nd law of Thermodynamics, list 4 examples ofirreversible processes and why you know they're irreversible.
- Q Heavenly Dog eating the Sun As an astronomy lover, there is no way for you to miss the partialsolar eclipse.(a) It is not safe to observe the eclipse with your...
- Q The inner workings of most electronic devices fordiagnostic imaging are temperature-sensitive, in that they will notfunction properly if safe operating temperature is exceeded.However, these devices also include internal components that...
- Q A uniform, thin, solid door has height 2.30 m, width 0.810 m,and mass 24.5 kg.(a) Find its moment of inertia for rotation on its hinges.kg
- Q Early test flights for the space shuttle used a \"glider\" (massof 980 kg including pilot). After a horizontal launch at 500 km/hat a height of 4000 m , the glider...
- Q A ski starts from rest and slides down a 30 ∘ incline 70 mlong.a) If the coefficient of friction is 0.095, what is the ski'sspeed at the base of the...
- Q A proton in a high-energy accelerator moves with a speed ofc/2. Use the work–kinetic energy theorem to find the workrequired to increase its speed to the following speeds.(a) 0.530cMeV(b) 0.940cGeV
- Q A computer is reading data from a rotating CD-ROM. At a pointthat is 0.0206 m from the center of the disk, the centripetalacceleration is 174 m/s2. What is the centripetalacceleration...
- Q SCENERIO 1A solid, homogeneous sphere with a mass of m0, aradius of r0 and a density of Ï0 is placed ina container of water. Initially the sphere floats and the...
- Q For each of the scenarios below, determine how the total mass ofthe described object or system is changing, and say whether thescenario Increases the Mass, Decreases the Mass, or that...
- Q A uranium-238 nucleus at rest undergoes radioactive decay,splitting into an alpha particle (helium nucleus) with mass6.64×10-27 kg and a thorium nucleus with mass 3.89×10-25 kg. Themeasured kinetic energy of the...
- Q . Ice at −11.0 °C and steam at 146 °C are brought together atatmospheric pressure in a perfectly insulated container. Afterthermal equilibrium is reached, the liquid phase at 48.0 °C...
- Q An ideal transformer has 50 turns in its primary (input) and 450turns in its secondary (output). 10.0-V ac is connected to theprimary (input). a) What is the voltage on the...
- Q 9. How do we know whether or not global warming is caused byhumans?From experiments in which a small experimental plot of forest issubjected to excess carbon, and the growth of...
- Q A bullet of mass 5.00 g is fired horizontally into a woodenblock of mass 1.16 kg resting on a horizontal surface. Thecoefficient of kinetic friction between block and surface is...
- Q 2a)Why is it necessary to level the rotating platform? How would themotion of the revolving mass be affected if the base were notlevel? Explain.2b) Why is it important that the...
- Q 1. A uniform magnetic field ? = 0 ? + 0 ? + 76.0 ? μT occurs inthe region ? ≥ 0. There is no magnetic field at ? <...
- Q A uniform film of TiO2, 1036 nm thick and having index ofrefraction 2.62, is spread uniformly over the surface of crownglass of refractive index 1.52. Light of wavelength 490 nm...
- Q How is the cosmic microwave background a logical conclusion fromthe idea of the Big Bang?
- Q I need from 6 to 8 lineWhat is interoperability as used in the EHR and what isits importance?
- Q What is the change in the form of energy that is shown by thechange in direction of the compass needle when an electric currentis passed beneath it?When the magnet is...
- Q A 320 g block is dropped onto a relaxed vertical spring that hasa spring constant of k = 1.8 N/cm (see the figure). Theblock becomes attached to the spring and...
- Q thermodynamics:Explain why the properties of liquids can be estimated (withreasonable accuracy) as a function of temperature only
- Q The density of a 10 kg cube of silver is 10.5g/cm3. What would the density of a 5 kg cube of silverbe?I thought the answer would be 5.25 g/cm^3 becausem1/m2=p1/p2...
- Q A 10.3 g wire has a density of 5.9 g/cm3 and a resistivity of1.51 × 10−7 Ω · m . The wire has a resistance of 106 Ω . How...
- Q what are the equations or procedure for the following questions2.Capacitor wired with a resistor, find the time constant. 3.Themagnetic field generated by a current at distance d from the wire,and...
- Q The drawing shows an edge-on view of two planar surfaces thatintersect and are mutually perpendicular. Surface 1 has an area of1.5 m2, while surface 2 has an area of 3.4...
- Q A weight is attached to a spring suspended from a beam. At timet = 0, it is pulled down to a point 7 cm above the groundand released. After that,...
- Q A 4.26-kg block starts up a 33.0Ëš incline at 7.81 m/s. (a) Howfar will it slide if it loses 34.6 J of mechanical energy due tofriction? (b) What is the...
- Q Three children are riding on the edge of a merry‑go‑round thathas a mass of 105 kg and a radius of 1.70 m . The merry‑go‑round isspinning at 24.0 rpm. The...
- Q Q10. Assume that the Earth is orbiting the sun in a perfectlycircular orbit. If the Earth is hit by a huge meteorite but itsorbiting angular momentum is not changed (this...
- Q A white billiard ball with mass mw = 1.5 kg is movingdirectly to the right with a speed of v = 3 m/s and collideselastically with a black billiard ball...
- Q A block of mass m1 = 1.60 kg initially moving to the right witha speed of 4.00 m / s on a trackhorizontal without friction and collides with a spring...
- Q A railroad freight car rolls on a track at 2.65 m/s toward twoidentical coupled freight cars, which are rolling in the samedirection as the first, but at a speed of...
- Q Describe the evidence for a supermassive black hole at thecenter of our Galaxy.
- Q a) How did interstellar extinction mislead astronomers intobelieving that we are at the center of our galaxy?b) Describe how Harlow Shapley proved that the Sun is not at thecenter of...
- Q Imagine you are a punter on a football team and the coach tellsyou to give your players a chance to get down the field. With whichangle with the horizontal would...
- Q describe how the energy gap of a semiconductor is different fromthat of insulator and conductor .
- Q explain how the process of doping is attained to achieveextrinsic semiconductors with different electrical properties ?
- Q When you hold an insect at the near point of your eye itsubtends an angle of 5.00 10-3 rad. Determine the maximum angularsize of the insect when viewed through a...
- Q A stone is dropped at t = 0. A second stone, with twicethe mass of the first, is dropped from the same point at t= 234 ms.How far below the...
- Q Suppose a charge of -2.40 µC is at the origin and a charge of3.10 µC is at the point (0, 3.00) m.(a) Find the electric potential at (4.00, 0) m,...
- Q Briefly describe how the distance traveled by the football mightbe different if the landing height was different than the release(kicking) height?
- Q A)A student stretches an elastic band by 0.8 m in 0.5 seconds. Thespring constant of the elastic band is 40 N/m. What was the powerexerted by the student?25.6 W64.0 W12.8...
- Q Two point charges, qâ‚= +2 nC and qâ‚‚= -18 nC, are located on thex-axis at x= 0 and x=4 m. What is the distance of ZERO electricfield from the positive...
- Q A youngster is holding a ball with a diameter of 5.60 cm andaverage density of 0.0837 g/cm3 under water. Determinethe force (in N) needed to hold it completely submerged.magnitude  Ndirection ---Select---...
- Q why is a car a good place to hide from lightning? [try toexplain in terms of electric fields]
- Q Amy and bob are in an archery competition. the goal is to hit atarget taht is on a wall 50m away from them horizontally. thetarget is 21m vertically above the...
- Q Discuss the magnet, gradient coils, and RF coils in a MRIscanner. Include a figure and some of the design considerationsrequired for each component.
- Q A baseball player at bat hits a ball to the outfield. Thebaseball is hit when it is at a height of 1.60 m above the homeplate. The ball’s velocity the...
- Q Do the resistors on the Ohm’s law board actually have the valuesclaimed by the manufacturer, as indicated by the color code?
- Q 2. The average distance between two neighboring stars in ourgalaxy is about 5 light-years. (a)How many years would it take the Voyager 1 Space Probe to travel5 light-years?(b) If an...
- Q A brass rod with a length of 1.23 m and a cross-sectional areaof 1.53 cm2 is fastened end to end to a nickel rod with length Landcross-sectional area 1.29 cm2...
- Q 1.) A conducting loop is sitting in a magnetic field. Which ofthe following actions would cause the magnetic flux through theloop to change? Select all that apply.a) change the strength...
- Q A light spring of force constant 4.45 N/m is compressed by 8.00cm and held between a 0.250 kg block on the left and a 0.450 kgblock on the right. Both...
- Q 7. A particle of rest energy 800 MeV decays in its rest frameinto two identical particles of rest energy 250 MeV. What are thekinetic energies (in MeV), momenta (in MeV/c),...
- Q A cube of edge length â„“ = 2.0 cm is positioned as shown in thefigure below. There is a uniform magnetic field throughout theregion with components Bx = +7.0 T,...
- Q Steam at 100°C is added to ice at 0°C.(a) Find the amount of ice melted and the final temperature whenthe mass of steam is 12 g and the mass of...
- Q The drawing shows an equilateral triangle, each side of whichhas a length of 3.99 cm. Point charges are fixed to each corner, asshown. The 4.00 C charge experiences a net...
- Q Public Radio station KXPR-FM in Sacramento broadcasts at 88.9MHz. The radio waves pass between two tall skyscrapers that are15.0 m apart along their closest walls.1) At what horizontal angles, relative...
- Q 1. Fireflies emit light across the visible spectrum, but thepeak intensity of their emission is around a wavelength of 550 nm.So let’s make the approximation that all of the light...
- Q 1.) A fast moving vehicle travelling at a speed of 33.9 m/scomes up behind another vehicle which is travelling at a slower,constant speed of 15.4 m/s. If the faster vehicle...
- Q Consider a tug of war between two teams. Why is it impossiblefor either team to pull harder on the rope than the other? Ifpulling on the rope harder than the...
- Q A dad pushes tangentially on a small hand-driven merry-go-roundand is able to accelerate it from rest to a frequency of 15 rpm in11.0 s . Assume the merry-go-round is a...
- Q On a frictionless horizontal air table, puck A (with mass 0.251kg ) is moving toward puck B (with mass 0.374 kg ), which isinitially at rest. After the collision, puck...
- Q a. Which has more potential energy, a 10-kg box on a shelf or a5-kg box on a shelf that’s twice as high? Explain.b. Which has more kinetic energy, a 2000-kg...
- Q A 195 g block is pressed against a spring of force constant 1.55kN/m until the block compresses the spring 10.0 cm. The springrests at the bottom of a ramp inclined...
- Q A long horizontal wire carries a current of 48 A. A second wire,made of 2.7 mm diameter copper wire and parallel to the first, iskept in suspension magnetically 15 cm...
- Q Consider an electron confined to an infinite well of width 2ao(Bohr radius). Compare its energy in its three lowest energy statesto the three lowest energy states of the Bohr model...
- Q 8. Summarize the case for why Pluto should not be considered aplanet.
- Q explain the FDA mission and duties
- Q If an electron in an atom has orbital angular momentum with mlvalues limited by ±2, how many values of (a) Lorb,z and (b) μorb,zcan the electron have? In terms of...
- Q can you explain light and matter using physics. Discoveries madeby light and matter etc..
- Q A square loop of wire with sides of length 34 cm is in a uniformmagnetic field perpendicular to its area.Part AIf the field's strength is initially 110 mT and it...
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