Physics question and answers for September 11, 2023
- Q A) At what angularfrequency is the voltage amplitude across the resistor inanL-R-C series circuit at maximumvalue?(Express your answer in terms of the variables L,C, and R.)B) At what angularfrequency is...
- Q A firehose must be able to shoot water to the top of a building38.0 m tall when aimed straight up. Water enters this hose at asteady rate of 0.515 m3/s...
- Q When the first nuclear bomb was detonated, some scientistsbelieved that a hugenuclear chain reaction would occur, blowing the earth to pieces.Calculate the energythat would be required to disassemble the earth...
- Q So this is my assignment. My question is, what makes an object agood insulator? Does having a high specific heat alone make a goodinsulator? Water has a very high specific...
- Q A baseball is hit 40 m/s at an angle of 30 degree. A 5 m highfence is 125 m away. Does it go over the fence?
- Q Two adjacent natural frequencies of an organ pipe are found tobe 550 Hz and 650 Hz. a.) Calculate the fundamental frequency ofthe pipe. b.) Is the pipe open at both...
- Q 5. Other Solar Systems. Suppose we found a solar systemwith the properties described (note that these are not realdiscoveries!). In light of our theory of solar system formation,decide whether the...
- Q Athird baseman makes a throw to first base 40 m away. The ballleaves his hand with a speed of 37 m/s at a height of 1.5 m fromthe ground and...
- Q Concept:Engergy & momentum of light?Uncertainty Principle?
- Q What is the minimum speed (relative to Earth) required for arocket to send it out of the solar system?Note that you need tomake use of Earth's speed to arrive at...
- Q For a FCC crystal structure,(a) Define three primitive vectors in the Cartesian Coordinatesin the most symmetrical form. The lattice constant of FCC is‘a’.(b) From the above primitive vectors in the...
- Q (a)A light-rail commuter train accelerates at a rate of 1.45m/s2. How long (in s) does it take to reach its topspeed of 80.0 km/h, starting from rest?s(b)The same train ordinarily...
- Q Titan’s atmosphere contains a large amount of photosensitivemethane. We knowbecause of basic physics and chemistry that theremust be a source of methane onTitan that replenishes theatmospheric methane.a) Describe what astronomers...
- Q 1. on a warm day, a tube open on one end resonates at 51.3 cmand 85.8 cm when the subject to 500 Hz input. what is the velocityof sound at...
- Q A ladder of mass 30 kg and length 5m leans against africtionless wall. The angle between the ladder and the wall is 37degree. (a) what is the force between the...
- Q Ball 1, with a mass of 110 g and traveling at 15 m/s , collideshead on with ball 2, which has a mass of 340 g and is initially atrest.What...
- Q (a)Two charges are placed on the x-axis: one is placed at x = 3m and the other is at x = -3 m. The magnitude of both charges is9.7
- Q n = 2.94 mol of Hydrogen gas is initially at T = 381 Ktemperature and pi = 2.24×105 Pa pressure.The gas is then reversibly and isothermally compressed until itspressure reaches...
- Q A:What must be the density of the oil?B:If the vehicle is taken to Mars, where the acceleration due togravity is 0.379 g, what will be the pressure difference(in earth atmospheres)...
- Q What is exponential growth? What consequences can we expect ifU.S. population growth and energy consumption continue to growexponentially? What are renewable energy sources and how can usingrenewable energy to generate...
- Q Charges of the amount 45 nC/m (charge per length) are depositedat the surface of a long, straight metal wire of diameter = 2 mm inwhich the surrounding media is air.(a)...
- Q In a downhill ski race surprisingly little advantage is gainedby getting a running start. This is because the initial kineticenergy is small compared with the gain in gravitational potentialenergy even...
- Q A faulty model rocket moves in the xy-plane (the positivey-direction is vertically upward). The rocket's acceleration hascomponents ax(t)=?t2 and ay(t)=???t, where ? = 2.50 m/s4, ? = 9.00m/s2, and ?...
- Q Calculate the mass of the sun from the radius of the earth'sorbit (1.50×1011 m), the earth's period in its orbit,and the gravitational constant G.What is the density of the sun...
- Q An isolated charged conducting sphere has a radius R = 14.0 cm.At a distance of r = 24.0 cm from the center of the sphere theelectric field due to the...
- Q 1)suppose we start with an electron with zero initial velocity.Let Ï bethe typical time it would take for ourelectron to hit an atom. We can use this asan average time...
- Q A 1.50 kg book is sliding along a rough horizontal surface. Atpoint A it is moving at 3.21 m/s , and at point Bit has slowed to 1.25 m/s .Part...
- Q At an angle of 36.5deg with the horizontal, a ladder, with mass(m = 100.0 kg) rests on a frictionless wall and on the ground witha friction coefficient (μS).a) What is...
- Q Write a short paragraph on what you understand by a force field.Use gravitational and electric field concepts for your posting.(ii) How is the concept of potential used in a force...
- Q 5.1 A car is traveling along a highway at 65 miles per hour. Theroad is horizontal (0% slope). If the wind resistance and rollingresistance at the wheels creates a combined...
- Q I good now. thanks
- Q The women’s record for fastest serve is by Sabine Lisicki with131 mph which is approximately 58.56 m/s.  Suppose shehit the ball at a height of 2.6 meters above the court at...
- Q A meterstick (L = 1 m) has a mass of m = 0.19 kg. Initially ithangs from two short strings: one at the 25 cm mark and one at the75...
- Q Explain the relation between the induced electromotiveforce and the sectional area of the secondary coil, while thenumber of turns of the secondary coil keeps constant.
- Q A 2.00kg bucket containing 11.5kg of water is hanging from avertical ideal spring of force constant 140N/m and oscillating upand down with an amplitude of 3.00 cm. Suddenly the bucket...
- Q Squid use jet propulsion for rapid escapes. A squid pulls waterinto its body and then rapidly ejects the water backward to propelitself forward. A 1.5 kg squid (not including water...
- Q A recent home energy bill indicates that a household used 475kWh (kilowatt-hour) of electrical energy and 225 therms for gasheating and cooking in a period of 1 month. Given that...
- Q A toy cannon uses a spring to project a 5.39-g soft rubber ball.The spring is originally compressed by 5.04 cm and has a forceconstant of 8.10 N/m. When the cannon...
- Q A bullet of mass m1 is fired horizontally into a wooden block ofmass m2 resting on a horizontal surface. The coefficient of kineticfriction between block and surface is μk. The...
- Q Absorpstion spectrum of hydrogen shows line in 404.7nm ; 435.8 nm and 486.3 nm.Determine:a. Transtition for each line aboveb. Ionization energy of Hydrogen[Question doesn't state about spectral series (Lyman,Balmer.....). I...
- Q Q3 Scenario: Discharge the electroscope and charge itagain with the rubber rod. Rub the perspex rod with silk and bringit close to the metal disk on top of the electroscope,...
- Q 1. An ideal transformer has a primary with 25 turns andsecondary with 15 turns. The load resistor is 24 ? and the sourcevoltage is 85 Vrms.What is the rms electric...
- Q A 14.0 m uniform ladder weighing 480 N rests against africtionless wall. The ladder makes a 63.0°-angle with thehorizontal.(a)Find the horizontal and vertical forces (in N) the ground exertson the...
- Q An electric motor exerts a constant torque of Ï„=10Nâ‹…m on agrindstone mounted on its shaft; the moment of inertia of thegrindstone is I=2.0kgâ‹…m2. If the system starts from rest, find...
- Q Given is the rod of length L with the linear charge of density?=?/? . The rod lies on the x axis with its midpoint at the origin.Find the electric field...
- Q 1. In terms of edges, why is it an advantage to use mirrors overlenses in telescopes?2. How does the placement of the eyepiece with Newtonian andCassegrain reflectors differ?3. What does...
- Q Imagine that you have placed a compass due east of of a wirewhere current equals 2A (the wire is vertical and current travelsfrom bottom to top).1. If you turn the...
- Q A neutron star has a mass of 3.35 × 1030 kg (about the mass ofour sun) and a radius of 6.09 × 103 m. Suppose an object falls fromrest near...
- Q A neutron star is an astrophysical object having a mass ofroughly 2.8 × 1030 kg (about 1.4 times the mass of thesun) but a radius of only about 12 km....
- Q How would you construct a pendulum clock that is reliable undera variety of temperatures?
- Q 2.00-nF capacitor with an initial charge of 5.35 µC isdischarged through a 1.23-kΩ resistor.(a) Calculate the current in the resistor 9.00 µs after theresistor is connected across the terminals of...
- Q A 4.4 x 10^14 Hz laser emits a 2.1
- Q The binding energy of an electron in the ground state in ahydrogen atom is about:A. 13.6 eVB. 3.4 eVC. 10.2 eVD. 1.0 eVE. 27.2 eV
- Q a. A large solenoid with a length of 6.7 m and 31000 turns ofwire carries an initial current of 4.9 A. The solenoid is alignedso that the magnetic field is...
- Q As shown in the figure (Figure 1) , a superball withmass m equal to 50 grams is dropped from a height ofhi=1.5m . It collides with a table, then bounces...
- Q 1. Using the two equations below,show that the final position of the monkey and ball are the samebecause of the acceleration due to gravity. At the final positionof the monkey...
- Q Copy and paste the following questions in the submit box belowand find the location where the following information is found:Give the line numbers where the hypothesis occurs.Give the line numbers...
- Q In the figure, the top tank, which is open to the atmosphere,contains water and the bottom tank contains oil covered by apiston. The tank on the right has a freely...
- Q Physics PreLab- ElectrostatisticsWhat are the three methods of charging-explain each.What is an electrophorus and how does it work?When you rub a balloon on your wool shirt, what charge does theballoon...
- Q A 75 kg student jumps off a bridge with a 12-m-long bungee cordtied to his feet. The massless bungee cord has a spring constant of430 N/m. a. How far below...
- Q We can show why we don’t have observable radial accelerationeffects even though the Earth isspinning and we can comment quickly on the tangential acceleration we experience.a)Specifically, show that Cleveland’s centripetal...
- Q A very thin circular disk of radius R = 17.00 cm has charge Q =50.00 mC uniformly distributed on its surface. The disk rotates ata constant angular velocity ? =...
- Q In this lab you will take data from a video and attemptto verify the Law of Conservation of Momentum. Additionally, youwill take into account the uncertainty of (most of) themeasurements.There...
- Q Three particles, charge q1 = +12 µC,q2 = -19 µC, and q3 = +31µC, are positioned at the vertices of an isosceles triangle asshown in the figure. If a =...
- Q 1.) The femur of an elephant is about 90 cm long and 15 cm indiameter. This is a scaling problem. The largest dinosaur probablyweighed about 10 times as much as...
- Q the following questions are pertaining to anultrasound. what is the \"illumination\" source (where does theenergy come from)? what interaction are you measuring (reflection,refraction, absorption)? what is the image detecting (whatinformation...
- Q Hummingbirds can pick up static charge as they fly either fromthe air or from interactions with plants. A possible value is +250pC.a. Given this charge, did the bird gain positive...
- Q The length of a simple pendulum is 0.72 m and the mass of theparticle (the \"bob\") at the end of the cable is 0.21 kg. Thependulum is pulled away from...
- Q Find the wavelength (in nm) of a photon whose energy is 9.00 ×10-19 J.
- Q Air that occupies a volume of 0.142m3 at a gauge pressure of103kPa, expands isothermally to zero gauge pressure and then iscooled to constant pressure until it reaches its initial volume.Calculate...
- Q A block of mass 5 kg rests on a 30° inclined plane. The surfaceis rough. The coefficient of friction between the surface and theblock is 0.5. Find the frictional force...
- Q The dielectric in a capacitor serves two purposes. It increasesthe capacitance, compared to an otherwise identical capacitor withan air gap, and it increases the maximum potential difference thecapacitor can support....
- Q Two blocks are connected by a light string that passes over africtionless pulley having a moment of inertia of 0.0040 kg*m2 anda radius of 5.0 cm. The coefficient of kinetic...
- Q A hare and a tortoise compete in a race over a straight course1.10 km long. The tortoise crawls at a speed of 0.150 m/s towardthe finish line. The hare runs...
- Q Assume that the skier is 1.8 m tall and 0.30 m wide. Assume theskier's drag coefficient is 0.80.What is the terminal speed for an 85 kg skier going down a...
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