Physics question and answers for September 05, 2023
- Q Polarizing sunglasses: (i) What direction are theypolarized? (sketch), (ii) Why is 50% of sunlight removed? (iii) Whyis horizontal glare screened out but not vertical glare? (secondsketch)
- Q light from a discharge tube containing a particular gasilluminates a diffraction grating and is observed on a screen75.0cm behind the grating. The emission at wavelength 621nm createsa first-order bright fringe...
- Q Projectile Motion - (Time) Above Ground - General LaunchAngleAt a height h = unknown above the ground a rocket is fired at aninitial speed v0 = 142.0 m/s at an...
- Q a) Consider the excited state of beryllium with an electronconfiguration of 1s22s2p.     (i) What isthe degeneracy of this electron configuration (i.e., how manydistinct sets of quantum numbers are consistent with...
- Q Suppose that we have two masses, m1 and m2, traveling at initialvelocities v1i and v2i . After they collide, they will havevelocities v1f and v2f . The collision will happen...
- Q Projectile Motion - Rocket Clears Wall - General LaunchAngleA rocket is fired at an initial speed v0 = 165.0 m/s from groundlevel, at an angle θ = 50° above the...
- Q Find the total Coulomb force on the charge q , given thatq=+1.00μC , qa=+2.00μC , qb=−2.00μC , qc=−3.00μC , q=+4.00μC . Thesquare is 50.0 cm on a side.
- Q 6. Which type of instrument would best be used to look at agrain of wheat pollen.a) optical microscopeb) radio telescopec) transmission electron microscoped) scanning electron microscopee) variable electron microscope14) Rutherford’s...
- Q A major leaguer hits a baseball so that it leaves the bat at aspeed of 31.9 m/s and at an angle of 35.6 ∘ above the horizontal.You can ignore air...
- Q hiker starts at his camp and moves the following distances whileexploring his surroundings: 75.0 m north, 2.50 x 10^2 m east, 125 mat an angle 30.0
- Q how do you find velocity and distace travelled from anacceleration time. graph? (given: Vo=0, car is moving in straightdirection) graph is a piecewise { y=-x [0,5] and y=0 [5,infinity]}
- Q the three displacements given are 69.8m , 53? west of north;11.3m straight north; and 83.6m , 42? south of east. What magnitudedoes the winner calculate for the displacement to find...
- Q Approximately how many atoms are there in a baby elephant (mass240 kg)? Give the order of magnitude (power of ten).A: 18B: 22C: 28D: 35E: 44Tries 0/1The feet of the elephant...
- Q Projectile Motion - From Ground - General Launch Angle A rocketis fired at an initial speed v0 = 160.0 m/s from ground level, atan angle θ = 46° above the...
- Q please show work and reasoning1) What happens to a light wave with velocity v = ??, when ittravels from air intoglass? (a) Its speed remains the same. (b) Its speed...
- Q A 1kg ring with a radius of 10 cm rolls down a board inclined at30 degrees from a height of 4 meter. At the bottom of the inclined,n a frictionless...
- Q A point charge of -2.5 µC is located at the origin. A secondpoint charge of 9 µC is at x = 1 m, y = 0.5 m.Find the x and...
- Q The index of refraction in flint glass for these components ofwhite light - blue, yellow, and red colors are 1.639, 1.627, and1.622 respectively. (a) Calculate, in nanometers, to foursignificant figures,...
- Q Write the particular time dependent solution of the undampedharmonic oscillator given that at time t=0, the spring is initiallyat its equilibrium with an initial velocity v_0 and identify eachterm in...
- Q Tidal FrictionFor the calculations below, note that the Moon's mass is about1/80th of the Earth's, so the total mass of the Earth-Moon systemis essentially the Earth's mass.(a) Once the Earth...
- Q can someone tell me the differences between “Free UndampedMotionâ€, “Free Damped Motionâ€, “Driven Undamped Motionâ€, or “DrivenDamped Motionâ€sample drawings will be helpful.
- Q Error...
- Q A jet with mass m = 6 × 104 kg jet accelerates down the runwayfor takeoff at 2 m/s2. 1)What is the net horizontal force on theairplane as it accelerates...
- Q Suppose 1.0 mol of an ideal gas is initially at P=4.0atm and T=400 K. It is expanded irreversibly and adiabaticallyagainst a constant pressure of 1.0 atm until the volume hasdoubled.(a)...
- Q An object with mass 70 kg moved in outer space. When it was atlocation <7, -35, -5> its speed was 5.0 m/s. A singleconstant force <210, 400, -150> N acted...
- Q Two 15-cm-diameter metal disks separated by a 0.69-mm-thickpiece of Pyrex glass are charged to a potential difference of 1100V .What is the surface charge density on the disks?What is the...
- Q how can measuring the carbon-14 activity of a sample of ananimal bone allow one to determine how long ago the animal wasalive
- Q If you know the mass of a star and an object
- Q A grinding wheel is in the form of a uniform solid disk ofradius 6.96 cm and mass 2.05 kg. It starts from rest andaccelerates uniformly under the action of the...
- Q A stone is thrown with an initial velocity of 35.0 m/s at anangle of 37 degrees above the horizontal. Find: (a) its horizontaland vertical displacement after 0.55 s; (b) its...
- Q How are standing waves similar to beats and how are theydifferent?Typing only, no handwriting
- Q The speed of a plane in the absence of wind is 500 km/hr. In thepresence of a wind, in order to fly due north at a speed of 450km/hr with...
- Q The charges and coordinates of two charged particles held fixedin the xy plane are: q1=6.40 μC, x1=-8.100 cm, y1=5.600 cm, andq2=6.00 μC, x2=-4.652 cm, y2=10.013 cm, Find the magnitude anddirection...
- Q What must the charge (sign and magnitude) of a 1.43-g particlebe for it to remain stationary when placed in a downward-directedelectric field of magnitude 690 N/C ?What is the magnitude...
- Q A stone is dropped into a well. The splash is heard 2.2 secondslater. What is the depth of the well to the nearest tenth of ameter?
- Q 1) You have a gyroscope and a string. Wind the string up andpull it fast to get the gyroscope spinning quickly. Try to turn thegyroscope upside down quickly. How does...
- Q If 47.0 cm of copper wire (diameter = 1.00 mm) is formed into acircular loop and placed perpendicular to a uniform magnetic fieldthat is increasing at a constant rate of...
- Q A block is at rest on an inclined plane whose elevation can bevaried. The coefficient of static friction isμs= 0.45, and the coefficient of kineticfriction is μk = 0.18. The...
- Q 2.A semidiurinal tidal wave has a period of about 12 hours andpropagates from the ocean into a basin with a water depth of 100ma. compute the phase speed and wavelength...
- Q 1. Kepler’s 3rd law.(a) In an otherwise empty universe, two rocks of 5 kg orbit eachother at a distance of 1m. What is their orbital period?(b) The period of the...
- Q When an oscillator is underdamped, there are two principleeffects that we observe as a result (compared to the undampedoscillator). Describe them and explain why they occur?
- Q A parallel-plate capacitor having plates 6.00cmapart isconnected across the terminals of a 12.0Vbattery.A. Being as quantitative as you can, describe the location of theequipotential surface that is at a potential...
- Q Select True or False to each of the following statements aboutthis week's electric field mapping experiment. In order to receivecredit for this question you must answer ALL statements correctly.NOTE: The...
- Q The coils have the direction of the wrapped turns indicated onthe top: if you look down from above the direction is clockwise.Using the right hand rule, what is the direction...
- Q Why do giant stars have much more narrow lines than main-sequence dwarfs? Why are the stars that do not showstrong H Balmer lines either have either very low or...
- Q Calculate the momentum p, kinetic energy K,and total energy E of an electron traveling at each of thespeeds tabulated below.vp (keV/c)K (keV)E (keV)(a) 0.03c(b) 0.4c(c) 0.9c
- Q Show how the terms of Bernoulli’s equation are related toConservation of Energy?
- Q Apoint charge of -3.00 μCis located in the center of a spherical cavity of radius 6.90cmcminside aninsulating spherical charged solid. The charge density in the solidis 7.35 ××10−4−4.C/m3Calculate the magnitude...
- Q A 5.40 g bullet is fired horizontally at two blocksresting on a smooth tabletop, as shown in the top figure. Thebullet passes through the first block, with mass 1.20 kg,and...
- Q Given an example of a superconductor and describe in detail, howit is used in daily activities. Make it at least a paragraphplease.
- Q The position of a particle in cm is given by x = (3)cos 9?t, where t is in seconds.
- Q Suppose there are two blocks constructed so that one is twice asmassive as the other but they both are the same size and shape. Ifthey are both dropped into free...
- Q Cartman decides to visit Tibet, and there he finds a Tibetanmonastery atop a big rock. The only way up is a lift that uses theAtwood machine concept of a counterweight....
- Q There are three heat transfer mechanisms. Define each type andbriefly explain how they work. Additionally define insulation andhow it contrasts against these transfer mechanisms
- Q An internal explosion breaks an object, initially at rest, intotwo pieces: A and B. Piece A has 2.4 times the mass of piece B. Theenergy of 6400 J is released...
- Q You have a 40- lightbulb and a 100-W bulb.1. Find the resistances of the 40-W bulb. Take that ΔV = 120V.2. Find the resistances of the 100-W bulb. Take that...
- Q A 0.21 kg hockey puck has a velocity of 2.2 m/s toward the east(the +x direction) as it slides over the frictionless surface of anice hockey rink. What are the:(a)...
- Q A red ball is thrown down with an initial speed of 1.3 m/s froma height of 27 meters above the ground. Then, 0.5 seconds after thered ball is thrown, a...
- Q A pot of hot water is boiling on your stove.  The potis in the shape of a round cylinder made of aluminum which is 10 cmin radius.  The aluminum is 3 mm...
- Q The figure is a section of a conducting rod of radiusR1 = 1.20 mm and length L = 13.80 minside a thin-walled coaxial conducting cylindrical shell of radiusR2 = 10.1R1...
- Q A 75.0 kg ice hockey goalie, originally at rest, catches a 0.150kg hockey puck slapped at him at a velocity of 18.0 m/s. Supposethe goalie and the ice puck have...
- Q In a particular Millikan oil-drop apparatus, the plates are 2.25cm apart. The oil used has a density of 0.815 g/cm3 , and theatomizer that sprays the oil drops produces drops...
- Q An 80 kg skydiver falls through air with a density of 1.15 kg/m3. Assume that his drag coefficient is C=0.57. When he falls in thespread-eagle position his body presents an...
- Q Imagine a universe that has a permitivity of ε = 3εo. Withinthis infinite space, you find a spherical distribution of charge ofradius a that has a volumetric charge density of...
- Q Alight plane attains an airspeed of 370 km/h. The pilot sets out fora Destination of 800 km to the north but discovers that the planemust be headed 20° east of...
- Q A solid, uniform disk of radius 0.250 m and mass 53.2 kg rollsdown a ramp of length 4.70 m that makes an angle of 12.0° with thehorizontal. The disk starts...
- Q One of the largest contributions to modern electronics came froma man named Nikola Tesla. Briefly research Nikola Tesla's originsand his scientific discoveries and present your results in pointform.
- Q explain electric charge and electric field. Also giveexamples.please not by hand
- Q Question 56)PART 1)In the figure an electron is shot at an initial speed of v0 =4.62 × 106 m/s, at angle θ0 = 40.9 ˚ from an x axis. It...
- Q an object 3.0cm high object is place 4.0cm in front of aconverging lens with a focal length of 8.0cm. the object is locatedon the principal axis.part 1. the image that...
- Q In terms of λ, f, μ, and T what times the square root of thetension is equal to the wavelength?Please show work, thanks.
- Q In Figure 9-69, block 1 of mass m1 slides from rest along africtionless ramp from height h and then collides with stationaryblock 2, which has mass m2 = 3m1. After...
- Q An electric ceiling fan is rotating about a fixed axis with aninitial angular velocity magnitude of 0.260 rev/s . The magnitudeof the angular acceleration is 0.881 rev/s2 . Both the...
- Q A bumper car with mass m1 = 106.0 kg is movingto the right with a velocity of v1 = 4.5 m/s. Asecond bumper car with mass m2 = 98.0 kg...
- Q explain electric charge and electric field. Also giveexamples.
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!