Physics question and answers for September 18, 2023
- Q Lecture 4. Interfacial phenomena andmembranesHow are proteins positioning themselves on the surface ofmembranes?What are liposomes, how are they prepared and for what purposesare they used?Which factors of phospholipids are important...
- Q A 6 (mu Coulomb) point charge is located at the origin and a -2.5 (mu Coulomb) point charge is located 1m to the right along theX-axis. Determine the point (besides...
- Q Two carts with masses 250. g and 200. g are free toslide without friction on a horizontal airtrack. Â The 250.gcart is pushed against a spring, compressing it by 3.00 cm,...
- Q A cue ball traveling at 7.77 m/s makes a glancing, elasticcollision with a target ball of equal mass that is initially atrest. The cue ball is deflected so that it...
- Q A pitched baseball (m=0.3 kg) reaches a catcher’s glovetravelling at a velocity of 28 m/s. Calculate the ball’s: A)momentum, B) kinetic energy. How much impulse is required to catchthe ball?...
- Q Spaceman Spiff overflies the earth 4 times as youobserve him. For each of the velocities below calculate how longand how tall Spaceman Spiffs spaceship will appear to be to you...
- Q A string or rope will break apart if it is placed under too muchtensile stress. Thicker ropes can withstand more tension withoutbreaking because the thicker the rope, the greater thecross-sectional...
- Q An 7.90-cm-diameter, 310 g solid sphere is released from rest atthe top of a 1.60-m-long, 17.0 ∘ incline. It rolls, withoutslipping, to the bottom.What is the sphere's angular velocity at...
- Q The spring of a toy gun has a force constant of k = 533N/m and negligible mass. The spring is compressed the length of thegun barrel, 7.25 cm, and a...
- Q If a roadway is banked (super elevated), a car can round thecorner at a higher speed than an unbanked curve. What is themaximum speed a 1200kg car could navigate through...
- Q What is the main advantage of FTIR spectroscopy compared totraditional absorption based spectroscopy, which require dispersiveelements. Explain why?
- Q 1) What is the highest order dark fringe, m,m, that is found inthe diffraction pattern for light that has a wavelength of 621 nmand is incident on a single slit...
- Q Describe the Physics behind how many traffic lights change whena car rolls up to the intersection. Explain with figure as well
- Q The mass m is dropped from a height h. Find the magnitude ofCoriolis deflection and its direction (i.e north south east orwest). You can assume locationbeing in the northern hemisphere...
- Q Write the three Newton’s Laws of motion and give one example foreach Law:Newton’s First Law:Newton’s second Law:Newton’s Third Law:b)What is the difference between elastic and inelastic Collisonin terms of total...
- Q At a rock concert, a dB meter registered 130 dB when placed 2.2m in front of a loudspeaker on the stage.a. What was the power output of the speaker, assuming...
- Q A light source emits a photon during a time interval of 4.87multiply.gif 10-8 s. a) Find the minimum uncertainty in thephoton's energy. b) Find the minimum frequency bandwidth of thelight.
- Q A generator with an rms voltage of 130 V is connected in seriesto a resistor 3.65 kΩ and a capacitor 3.00 μF .1. At what frequency must this circuit be...
- Q (i) Find the magnitude of magnetic field inside a long, idealsolenoid of length L, with N turns and carrying current i.Demonstrate your knowledge of Ampere’s Law by constructing anyrelevant Amperian...
- Q The Physics Girl drops a Spalding Hi-Bounce ball ON TOP of aBasketball from1 m until the basketball with the Spalding on top ofit hits the ground. The Basketball then STAYS...
- Q Please answer allparts of the problemA person takes 15minute showers in 100°F water using a 2.0 gallon per minute showerhead. Ignoring losses, how many cubic feet of natural gas did...
- Q This is for an electric field mapping lab.Show that electic field strength is equal to the potentialgradient.
- Q In some video games, spacecraft employ ion drives. Write a onepage report discussing how an ion drive operates and whether it canefficiently propel a spacecraft. You will be marked on...
- Q Answer these and explain your reasoning.1. How much energy would it take to remove the electron fromunexcited hydrogen completely so that it is no longer bound to itsproton?2. Suppose a...
- Q I have tried to answer the following questions. Please let meknow if I missed one and why.1) A light car and a heavy car are headed toward each other fromopposite...
- Q A glass with a square cross section when viewed directly fromabove is filled with water. The glass is 8.0 cm wide on each sideand is 17.6 cm high. (a) Find...
- Q The thin uniform rod in the figure has length 5.0 m and canpivot about a horizontal, frictionless pin through one end. It isreleased from rest at angle θ = 50°...
- Q Consider a charge of -1 nC at (-1,0) m, and a charge of +1 nC at(1,0). Calculate the electric potential everywhere in theplane.
- Q The angle through which a rotating wheel has turned in time t isgiven by θ = a t− b t2+ c t4, where θ is in radians and t insecondsPART...
- Q Name and explain three ways in which momentum and kinetic energyare not conserved when they should be.
- Q Two students are studying for their upcoming physics exam anddiscussing the differences between directed motion and randommotion. While reviewing the students make the followingcomments:Kenny: Directed motion and random motion aretwo...
- Q 1-what can you conclude about the energy of transformation andthe conservation of mechanical energy for the motion of apendulum'.?
- Q Consider the earth moon system quantum mechanically! Treat theearth and moon as point masses.Write down the potential energy function for the earth/moon.Compare it to the potential energy function for the...
- Q A hollow spherical metal shell of density 6.90 g/cm3floats almost completely submerged in water. If the outer diameterof the metal shell is 14.0 cm, what is the inner diameter?
- Q A 2500 kg car encounters a banked, horizontal curve of diameter240 m. The banking angle is 7.5 degrees, and the coefficient offriction between the tires and the road is 0.80....
- Q A satisfactory radiographic image was obtained using 300 mA,20ms at 90 kVp, 182cm SID, 20cm OID, 1mm FSS, 8:1 grid, 400 IP(CR), and no pathological condition.5. What grid changes could...
- Q 21.19 Briefly explain what determines the characteristic colorof (a) a metal and (b) a transparent nonmetal. (c) Sketch andcompare the light-solid interaction (transmission, absorption, andreflection) intensities as a function of...
- Q An experiment involving perfect inelasticcollision is conducted: two carts with velcro stripsare placed on a track attached to a motion sensor. One cart isstationary and the other is pushed slightly...
- Q A series RLC circuit connected to a 24-V AC source has a currentof 150 mA when the AC source is set to 85 Hz. The voltage on thecapacitor is measured...
- Q A rectangular swimming pool is 8.0 m × 35 m in area. The depthvaries uniformly from 1.0 m in the shallow end to 3.0 m in the deepend.Determine the pressure...
- Q A coin and a ring have the same mass and radius. Starting fromrest and the same height, they roll down the same incline. In otherwords, they both start with the...
- Q what do we need about finding the bond equation in classicalmechanics problems?
- Q Two pendulums have the same length but different masses. If m1is released from the position shown in the figure on the right, howhigh would the masses reach after the collision...
- Q 61. Suppose a highly trained athlete consumes oxygen at a rateof 70.0 mL/(min · kg) during a 30.0-min workout. If the athlete’smass is 78.0 kg and their body functions as...
- Q Mario, a hockey player, is skating due south at a speed of 6.35m/s relative to the ice. A teammate passes the puck to him. Thepuck has a speed of 8.09...
- Q At a certain moment in time, two identical, positively chargedparticles are flying horizontally toward each other. Let thexx-axis be the axis along which the particles are moving, and letthe origin...
- Q The intensity of an earthquake wave passing through the Earth ismeasured to be 2.5×106 J/m2⋅s at a distance of 49 km from thesource.a) What was its intensity when it passed...
- Q A particular car engine operates between temperatures of 400°C(inside the cylinders of the engine) and 20°C (the temperature ofthe surroundings).Given these two temperatures, what is the maximum possibleefficiency the car...
- Q The water flow rate for a particular sprinkler is 16 gpm. Thewater must be projected at least 25 feet in radius. The sprinkleris mounted 11 feet above the ground and...
- Q A 1.8 kg , 20-cm-diameter turntable rotates at 130 rpm onfrictionless bearings. Two 510 g blocks fall from above, hit theturntable simultaneously at opposite ends of a diameter, andstick.What is...
- Q Awall in a house contains a single window. The window consists of asingle pane of glass whose area is 0.16m^2 and whose thickness is2.0 mm. Treat the wall as a...
- Q n ideal gas is enclosed in a cylinder with a movable piston ontop of it. The piston has a mass of 8,000 g and an area of 5.00 cm2and is...
- Q A 1300 kg aircraft going 35 m/s collides with a 1500 kg aircraftthat is parked and they stick together after the collision and aregoing 16.3 m/s after the collision. If...
- Q During a relay race, you run the first leg of the race, adistance of 1.8 ✕ 102 m to the north, in 22.34 s. You then run thesame distance back...
- Q A flywheel turns through 30 rev as it slows from an angularspeed of 5.5 rad/s to a stop. (a) Assuming aconstant angular acceleration, find the time for it to come...
- Q You stand on a straight desert road at night and observe avehicle approaching. This vehicle is equipped with two smallheadlights that are 0.621m apart. At what distance, in kilometers,are you...
- Q Table 1: Temperature of Frozen Water OverTimeTime (min.)Temperature (°C)Observation0-12Water is frozen50Water is frozen101Ice is attached to thermometer but unstuck from test tube1514There is a pool of water in the bottom...
- Q In what ways does a tightrope walker’s pole increasestability?Please Type Out Answer
- Q In the figure, a thin horizontal bar AB of negligibleweight and length L = 3.2 m is hinged to a vertical wallat A and supported at B by a thin...
- Q A long wire carrying a 4.5A current perpendicular to thexy-plane intersects the x-axisatx=?2.0cm.Part AAt what point on the x-axis is the magnetic field zeroif the two currents are in the...
- Q A medical technician is trying to determine what percentage of apatient's artery is blocked by plaque. To do this, she measures theblood pressure just before the region of blockage and...
- Q A turntable rotating 33 rev/m slows to a stop in 10s. If theacceleration is constant, the number of revolutions through whichthe turntable rotates in the 10 is?A. 7.8B. 1.4C. 12.2D....
- Q Describe what parallax is.
- Q the position a the rocket sled on a straight track is given asx= at^3+ bt^2+c, where a= 1.04m/s^2, b=1.94 m/s^2, and c= 8.29m.what is the sled's average speed between t=...
- Q Water flowing along a horizontal pipe has a speed of 2.31 m/sand a pressure of 4.25 atm. Further along, the pipe narrows so thatthe cross-sectional area decreases by a factor...
- Q #1 A 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 A 90g ball is tied to a string so that the center its mass hangs50 cm below the point where the string is tied to a support rod.The ball is...
- Q Two light bulbs are 1.00 mapart. From what distance can theselight bulbs be marginally resolved by a small telescope with a 3.90cm-diameter objective lens?Assume that the lens is diffraction limited...
- Q (only one situation)It poses a problematic situation in real life, where you needmechanical physics to solve it. The problem must contain thefollowing topics:1) Conservation of mechanical energy.2) Conservation of the...
- Q A 3.5-kg object is supported by an aluminum wire of length 1.8 mand diameter 2.0 mm . How much will the wire stretch?
- Q What are magnetic poles? Why are they called north poleand south pole?
- Q An AC generator with an output rms voltageof 18 V at a frequency of 60Hz is connected across a 3
- Q When a 23.0-V emf device is placed across two resistors inseries, a current of 14.0 A is flowing in each of the resistors.When the same emf device is placed across...
- Q A dentist causes the bit of a high-speed drill to acceleratefrom an angular speed of 1.46 x 104 rad/s to an angular speed of3.29 x 104 rad/s. In the process,...
- Q the range versus angle graph should be a parabola since itsthe visualization of the function in between a 0 degree minimumangle an a 90 degrees maximum angle true or false?explain...
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