The hydrogen lines in spectral type A stars a. are most narrow for supergiants. b. are most narrow for main-sequence stars. c. cannot be used to estimate the luminosity of the star. d. are very weak and difficult to see. e. are useful in determining the apparent magnitude of the star.
Q: 6) Mono chromatic light of wavelength 620n m TS in ci dent grating with on per pen dicu larly 300 ru...
A: Given data: The wavelength of monochromatic light λ=620 nm The grating ruling is r=300 rulings mm-1
Q: Find the energy values of the first three levels of this well using the finite difference method. ...
A:
Q: Which has more total energy: a hydrogen atom with an electron in a high shell (large n) or in a low ...
A: Introduction: The energy of Hydrogen atom in the n shell is given as: En=-13.6eVn2 ...
Q: MN is a straight current carrying conductor located at the y axis; the intensity of the electrical c...
A: The arrangement of the finite wire element MN and point P as given in the problem is drawn below. T...
Q: A laser beam of 0.005 W with photon energy of 1.6 eV is incident on a GaAs PIN phot-detector. The de...
A: Given, Pi= 0.005W hν= 1.6eV' d=6×10-4m A=0.8cm2 R=0.2 α=1×10-3cm Photo detector current, IL=e1-RPi1-...
Q: 7-
A:
Q: 22. Consider the electric dipole shown in Figure P23.22. Show that the electric field at a distant p...
A: Electric field due to a point charge q at a distance r is given as E = kq/r2
Q: Consider a bouncy ball and a metal cylinder on a 20° incline. Everyone knows a regular bouncy ball h...
A: Given that: θ=20°mb=29g=0.029 kgDb=2.5 cmRb=2.5 2=1.25 cm=1.25×10-2 mLc=5 cm=0.05 mDc=1 cmRc=0.5×...
Q: 7- A 2000 Hz sound wave passes through a wall with two narrow openings 30 cm apart. If sound travels...
A:
Q: Consider a case where gas A and gas B are kept at the same temperature and both have the same mass. ...
A: Gas A is a real gas and Gas B is an ideal gas.
Q: In semiconductors the concept of nonequilibrium carriers distribution function provides mean to take...
A: Carrier distribution function depend on the K , r, and t. Where r is position of carriers. And t ti...
Q: Experiment : ACCELERATION DUE TO GRAVITY USING COMPOUND PENDULUM I want very good Analysis for this ...
A:
Q: A nail driven into a board increases in temperature. If weassume that 60% of the kinetic energy deli...
A: Given data mham=1.8 kgV=7.8 m/secmnail=0.008 kg
Q: A parallel XCR circuit obeys the differential equation Q.1c below: с. d²m 1 dm + dt2 I = C - т + Equ...
A: Using Dimensional analysis Dimensions of Current , I= Dimensions of mX ⇒chargetime =dimension of mX...
Q: Imagine that you ski down a slope wearing a Velcro ski vest and then continue skiing on a horizontal...
A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and ...
Q: An electron is placed with an initial velocity of 3.00 m/s east in a region of space which has eithe...
A: Force on charge in electric field F = qE Force on charge in magnetic field F = q(v×B)
Q: Calculate the acceleration due to the gravity of the Earth.
A: Force on any body exerted by the Earth that is kept its surface is given as F=GMmR2 ..................
Q: A vehicle with headlights separated by 1.71 m approaches an observer holding an infrared detector se...
A: Given: The distance between headlights is d=1.71 m. The wavelength of radiation is λ=885 nm. The di...
Q: Advanced Physics Question
A: Given, Mass, M =400kg Batman mass, Mb=80kg Robin Mass, Mr= 70kg
Q: If the electric potential at a single point is known, can E at that point be determined? If so, how?...
A: Given: If the electric potential at a single point is known, can E at that point be determined? If s...
Q: A vertical, 1.20 m length of 18 gauge (diameter of 1.024 mm) copper wire has a 100.0 N ball hanging ...
A: Given:L=1.20 mF=500-100 NF=400 Nd=1.024×10-3 m
Q: Which particle has the largest mass? and How do nuclear decay reactions help explain the difference ...
A: Largest mass particle is neutron with a mass of 1.0087 amu
Q: Advanced Physics Question
A: Given: m=10kg k=200N/m Free length of spring x=200mm=0.2m AB=40mm=0.4m BC=30mm=0.3m OB=300mm=0.3m
Q: A bicycle rider has M. The wheels of the bicycle are at distance l apart and horizontaldistance betw...
A:
Q: Find the energy values of the first three levels of this well using the finite difference method. ...
A:
Q: Three equal 1.20 mC point charges are placed at the corners of an equilateral triangle with sides 0....
A: Given data q=12 mCr=0.4 m
Q: An H2 molecule can be approximated by a simple harmonic oscillator with a force constant k = 1.1 x 1...
A: The H2 molecule consists of 2 hydrogen atoms, separated by some bond length The masses of both the h...
Q: Two parallel wires are distance apart Clarification The current-carrying wire is suspended with stri...
A:
Q: Suppose a capacitor consists of two coaxial thin cylindrical conductors. The inner cylinder of radiu...
A: Given: The electric field at radial distance from central axis is E=αe-r/a0+βr+b0. The formula to ...
Q: A special racing car starts from rest and accelerates in a straight line with a constant acceleratio...
A: Given: a=5.8m/s2 s=376m
Q: 1.5m 1m d P 1m ---> x Pv1 Pv2, Located in free space R = 1m radius and R = 1.5m Two spherical charge...
A: Here, we use Gauss's law and Coulomb's law to get the field at the given point.
Q: Please i need the full answer with the steps for resistance and power
A: please see the next step for solution
Q: Why do frozen water pipes burst? Would a mercury thermometerbreak if the temperature went below the ...
A: Water is a curious substance in some respects.
Q: A +2.00 nC point charge is at the origin, and a second -5.00 nC point charge is on the x-axis at x =...
A: Let charge q1=+2 nC=+2×10-9 CLet charge q2=-5 nC=-5×10-9 C Charge q1 is situated at the originCharge...
Q: The dipole moment of a magnet is given by i = (-42) k A - m² which is in a magnetic field given by B...
A: Expression of force on a dipole moment due a magnetic field is, F→=μ→.∇B→
Q: E1 E1 a) Find E, in figure below if; E2 = £2 – §3 + 23 (V/m), x-y plane Eu E = 5e0, €z = 10£0, £o = ...
A: Given: The electric field at second media is given as The permittivity of the two media The surfa...
Q: A 1.80 kg monkey wrench is pivoted 0.250 m from its center of mass and allowed to swing as a physica...
A: Given data d=0.25 mm=1.8 kgT=0.94 secθ=0.4 rad
Q: on a soap 3) Lignt is incident perpendicularly The air. film (with n=1.5) suspendened in film is 0.2...
A: Given question is about interference of rays. So we have to use the concept of constructive interfer...
Q: The origins of two frames coincide at t = t' = 0 and the relative speed is 0.968c. Two micrometeorit...
A: Given: The relative speed is 0.968c. The coordinates of collision are x=98.2 km and t=239 μs. Introd...
Q: Semiconductor LED's have a slow response time and hence a low frequency operation and low band n bec...
A: As the concentration of holes in P side is hiegher holes deffuse towards n side and recombine with e...
Q: in ci dent on 100 nm. is Light ot wave length slit is at a distance ot a narrow slit. Tle 0.5nm from...
A: The distance of a minima at an angle θ, from the central maximum is given asy=mλLdm is the order of ...
Q: Optoelectronics
A: A DH led is a double heterostructure led device. A double heterostructure device is formed by using ...
Q: Observer S detects two flashes of light. A big flash occurs at x1 = 1390 m and, 5.13 us later, a sma...
A: (a) speed = v= (delta x) / (delta t) = (x2-x1)/(delta t) = (1390-780)/(5.13 *10^-6) v= 118.908382 ...
Q: Advanced Physics Question
A: a. Given, Ex(x,y)=A exp-jkyyexp-jβz Ex±d/2,z=0
Q: LED's can only be fabricated from direct band-gap semiconductors whether binaries, ternaries, or qua...
A: False
Q: A research team has discovered that a moon is circling a planet of our solar system: The moon orbits...
A: The force acting on a moon of mass m orbiting in a nearly circular orbit is given by : F=mv2R ...
Q: Evaluate Pio Cxl d X
A: We know the associate legendary polynomial is given as Therefore
Q: 9- (a) If the converging lens in a slide projector has a focal length of 104.00 mm and the slide is ...
A:
Q: What are the characteristics of an E7 Galaxy? What about E0 galaxy? Explain.
A: E is the letter by which Elliptical galaxies represented. These elliptical galaxy are label as En wh...
Q: Consider a simple model of the helium atom in which two electrons, each with mass m, move around the...
A: Two electron each mass m, moves around the nucleus in the same circular orbit.
-
The hydrogen lines in spectral type A stars
a. are most narrow for supergiants.b. are most narrow for main-sequence stars.c. cannot be used to estimate the luminosity of the star.d. are very weak and difficult to see.e. are useful in determining the apparent magnitude of the star.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
