Physics question and answers for September 25, 2023
- Q 6.6(a) Estimate the terminal speed of a wooden sphere (density0.870 g/cm3) falling through air, if its radius is 7.00cm and its drag coefficient is 0.500. (The density of air is...
- Q A disk with m=4.4 kg and radius 14.1 cm rolls adistance 4.3 m down a ramp that is inclined by an angle 26.9° withrespect to the horizontal. At the bottom...
- Q Physics Lab: Speed of SoundPlease answer what you can!Physics Pre Lab 13: Speed of Sound1) Why is it important to measure the temperature of the roomwhen performing the experiment?2) What...
- Q You are given a slide with two slits cut into it and asked howfar apart the slits are. You shine light composed of two wavelength(red and violet) on the slide...
- Q A major league pitcher stands on thepitching mound 60ft 6in from home plate throws a fastball at 105mph. Assume both the batter and pitcher are the same height (6ft6in) and...
- Q A block of mass m1 = 1.33 kg and a block of massm2 = 10.4 kg are connected by a massless string over apulley in the shape of a solid...
- Q Whydoes an ideal gas cool when it expands adiabatically andreversibly?
- Q A cylindrical rod 25.0 cm long with a mass of 1.20 kg and aradius of 1.50 cm has a ball of diameter of 7.90 cm and a mass of2.00 kg...
- Q what care must the person administering the treatmenttake
- Q The current through a 83 m long wire connected to a battery is2.7 A. A section of the wire is cut off and used to build acircuit. When the remaining...
- Q describe the process of fractional distillation of petroleum andexplain the purpose of this process ? (type here please in simplelanguage)
- Q A rocket with mass 4.00×103 kg is in a circular orbitof radius 7.40×106 m around the earth. The rocket'sengines fire for a period of time to increase that radius to8.90×106...
- Q A system of point charges includes q1= +1 microC at x1 = 2m,y1 =2m, q2= -1 microC at x2= -3m, y2= -3m, q3 = +3microC at theorigin.A) what is the...
- Q Compute the volume of each spring and it's uncertainty usingerror propagation.What is the formula for finding Volume of a spring? Not sure ifany of these help but these are my...
- Q (a) You took two 50-g ice cubes from your −15 C kitchen freezerand placed them in 200 g of water in a thermally insulatedcontainer. If the water is initially at...
- Q A stone is thrown from the top of a building at an angle of-20.0 degrees relative to the horizontal with an initial velocityof 30.0 m/s. The building is 65.0 m...
- Q A circular coil with a diameter of 25.0 cm and 158 turns rotatesabout a vertical axis with an angular speed of 1230 rpm . The onlymagnetic field in this system...
- Q A stuntman whose mass is 76 kg swings from the end of a3.5-m-long rope along the arc of a vertical circle. Assuming thathe starts from rest when the rope is...
- Q Sunlight, reflected from the still surface of a lake (n = 1.33),is totally polarized when the incident light is at what angle withrespect to the horizontal? Give your answer to...
- Q Raise a problematic situation in real life, where mechanicalphysics is needed to solve it.The problem raised should contain the following topics, withoutbeing limited to this list.1. Conservation of mechanical energy2....
- Q The route followed by a hiker consists of three displacementvectors , , and . Vector is along a measured trail and is 1360 m ina direction 16.0 ° north of...
- Q You launch a projectile horizontally from a building 29.5 mabove the ground at another building 40.6 m away from the firstbuilding. The projectile strikes the second building 14.0 m abovethe...
- Q Water moves through a constricted pipe in steady, ideal flow. Atthe lower point shown in the figure below, the pressure is 1.80 ✕105 Pa and the pipe radius is 2.90...
- Q 10-4=5=6a. A car traveling on a flat (unbanked), circular trackaccelerates uniformly from rest with a tangential acceleration of2.10 m/s2. The car makes it one quarter of the wayaround the circle...
- Q A block hangs from a string that runs over a pulley and isattached to a rolling cart. The cart, the block, and the pulleyeach have the same mass (M) ....
- Q On planet #3, you fire a projectile horizontally from the edgeof a vertical cliff 34.4 m above the ground, with an initial speedof 72.6 m/s. The projectile lands 63.5 m...
- Q A curve of radius 70 m is banked for a design speed of 100 km/h. If the coefficient of static friction is 0.33 (wet pavement), atwhat range of speeds can...
- Q A diver leaves a 3-m board on a trajectory that takes her 2.2mabove the board and then into the water 2.6m horizontally from theend of the board.Part AAt what speed...
- Q QUESTION 1In the equation to determine the total magnification for amicroscope, what does N stand for?1.The index of refraction of the eyepiece.2.The index of refraction of the objective.3.The average index...
- Q There is a line of negative charge (-Q) along the y axis (from 0to L). There is a line of positive charge (+Q) along the x-axis(from 0 to L).A) Find...
- 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 A simple insulator has a band gap of 4.0 eV, and the Fermienergy may be taken to reside in the middle of the gap. Estimatethe probability of an electron at...
- Q classify Statements about the eye as true or false.1. The image formed in the eye is upright.2. The blind spot is a transparent covering over theeye.3. The image seen by...
- Q Question B5(a) A very hot 0.8 kg copper cylinder at temperature 365.84℃ isdropped into a 0.2 kg copper bowl contains 0.3 kg of water at 20℃.The final temperature of the...
- Q A simple pendulum has a mass of 0.650 kg and a length of 7.00 m.It is displaced through an angle of 14.0° and then released. Usingthe analysis model of a...
- Q A circuit consists of a large electromagnet that has aninductance of 52.0 H and a resistance of 8.00 ?, a dc 270 V powersource, and an open switch - all...
- Q Meteoroids, meteors, and meteorites are all related. Choose thecorrect time-ordered pairing.A.Meteorites come before meteoroids.B.Meteorites come before meteors.C.Meteors come before meteoroids.D.Meteors come before meteorites.E.Meteoroids come after meteors.What are the three types...
- Q A car with mass 1309 kg is travelling north at a speed of 28.9m/s. It collides at right angles with a truck (m=2733 kg)travelling east at 16.6 m/s and the...
- Q • If a block of mass m at speed v collides inelastically with ablock of mass M at rest, what is the final velocity of each block?What fraction of the...
- Q Derive Laws of Black Body Radiation from Wien’s Law:uν = ν3F(ν/T)What is Stephen’s Law?Please Prove Stephen’s Law from Wien’s LawPlease Prove Wien’s Displacement Law from Wien’s Law
- Q 19 - 3 -4A heat engine operates between a reservoir at 29°C and one at341°C.What is the maximum efficiency possible for this engine?heat engine operates in a Carnot cycle between...
- Q The sound from a busy highway contains a 500 Hz Fouriercomponent whose power at the highway is 1.5 ✕ 10−6watt/m. (Ignore sound interactions with the ground).(a)What are the sound intensity...
- Q A package of mass 50 kg sits on an airless asteroid of mass 1.25x 10^13 kg and radius 1000 m. We want to launch the packagestraight up so that it...
- Q A 8.50 kg mass is attached to the end of a hanging spring andstretches it 28.0 cm. It is then pulled down an additional 12.0 cmand then let go. What...
- Q A balance and torque experiment is conducted with an UN-balancedruler.Length of the ruler: 1 mMass of the ruler: 149 gThe pivot is at the 32-cm mark.A 77-g mass is located...
- Q you have preparing your coffee in the morning. it comes out ofthe brewrt at a whopping 100c and you pour about 3kg of coffee. youthen add in 1kg of cream...
- Q Define each of the following reaction mechanism, giving itsdistinguishing characteristicsa) direct reaction; b) compound nucleus reaction; c)pre-equilibrium reaction; d) heavy-ion reaction, e) Strippingreaction f)Resonance and in each case give an...
- Q A Car weighs 4900 N, and can accelerate from 0 to 72 km/hour in5 secondsWhat is the acceleration?How large is the net force acting on the car?
- Q When three soap bubbles touch, the larger is inflated by thesmaller until they form a single bubble. (a) What is the gaugepressure inside a soap bubble with a 1.50-cm radius?...
- Q Consider the delta function potential well :V(x) = −αδ(x) (α> 0).(a) What are the boundary conditions on the bound state wavefunction and its derivative at x = ±∞ and x...
- Q You are in Denver, which is 5,280 ft above sea level. Comparethe acceleration due to gravity in Denver to that at sea level (h =0). What are your Weight and...
- Q Why is the emission frequency lower than the excitation? Whathappens to the difference in energy?
- Q John’s mass is 98.6 kg, and Barbara’s is 67.0 kg. He is standingon the x axis at xJ = +9.45 m, while she is standing on the x axisat xB...
- Q Problem: Car 1 (1000 kg) is traveling east at 8.0 m/s. Car 2(2500 kg) is traveling west at 4.5 m/s. These two cars have ahead-on collision. Car 2 recoils at...
- Q 1.Consider a satellite of the earth in a circular orbit ofradius R. Let M and m be the mass of the earth and that of thesatellite, respectively. Show that the...
- Q Provide the rationale for the use ofthermal remote sensing in water pollution detection.Present the advantage ofForward-Looking Infrared (FLIR) systems.  Why can SAR imagery be used for thedetection of oil spill in...
- Q A bullet is shot horizontally and becomes embedded in a largeblock, which is initially at rest on a horizontal surface. How farwill the block slide before stopping? The mass of...
- Q **A crate with a mass of 45 kg is suspended from a masslessrope that runs vertically upward over a light pulley. The other endof the rope is connected to a...
- Q What is the dependence of debye wave vector on density?
- Q ESSAY PART:A group of students of students wantsto build an apparatus that produces a mirage of an object. For thispurpose, they need to know the radius of curvature of the...
- Q Select all the features Jupiter and Saturn have in common.
- Q How does growth occur as a result of knowing ourvalue?What qualities in people do you admire most?
- Q What are the data elements used to describe an object's positionand motion? How can satellite orbits be classified (i.e. put intocategories)?
- Q Object A is moving due east, while object B is moving due north.They collide and stick together in a completely inelasticcollision. Momentum is conserved. Object A has a mass of...
- Q A particle that has a charge of 7.6 μC moves with a velocity ofmagnitude 4 × 105 m/s along the +x axis. It experiences no magneticforce, although there is a...
- Q An incompressible fluid is flowing through a vertical pipe witha constriction. The wide section is 2.00 cm in diameter and is atthe top of the pipe. The pressure of the...
- Q A light plane attains an airspeed of 480 km/h. The pilot setsout for a destination 780 km due north but discovers that the planemust be headed 19.0
- Q A major league pitcher stands on the pitching mound 60ft 6infrom home plate throws a fastball at 105 mph. Assume both thebatter and pitcher are the same height (6ft 6in)...
- Q You drop a 1.70 kg book to a friend who stands on the ground atdistance D = 12.0 m below. If your friend's outstretched hands areat distance d = 1.60...
- Q A long solenoid has a diameter of 15.3 cm. When a current iexists in its windings, a uniform magnetic field of magnitude B =32.8 mT is produced in its interior....
- Q It is difficult to extinguish a fire on a crude oil tanker,because each liter of crude oil releases 2.80×107 J of energy whenburned. To illustrate this difficulty, calculate the number...
- Q One of the greatest olympic weightlifters of all times-Soviet athlete Vasily Alekseyev- was once able to life 256 kg abovehis head in the upright (fully standing) position. Assume that thisentire...
- Q Electromagnetic radiation is emitted by accelerating charges.The rate at which energy is emitted from an accelerating chargethat has charge q and acceleration a is given bydE/dt=q^2a^2/6πϵ0c^3 where c is the...
- Q A car is designed to get its energy from a rotating flywheel(solid disk) with a radius of 1.50 m and a mass of 600 kg. Before atrip, the flywheel is...
- Q An alien race passing through our solar system turns the Sun(1.98x1030 kg) into a black holeusing advanced gravity technology.Determine the radius of the Sun if it were made into a...
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