Q: 12) Estimate the wavelength of the radiation emitted by an interstellar cloud of 4000 K. nts)
A: Interstellar clouds are made of gas and dust particles that are left over after a star dies. When an…
Q: About how much of the universe is believed to be composed of dark energy? O 68-73% O 10-12% O 4-5% O…
A: We know very less about the universe . and said universe is expand . the maximum thing is unknown…
Q: A Neutron is moving at a speed of 95% the speed of light, v= 0.95c A)Calculate the Lorenz…
A: A) Lorentz factor (γ)Since, γ=11-v2c2 ⋯⋯⋯⋯⋯⋯⋯⋯(1)Now, as already given that v=0.95 So, putting this…
Q: Determine the coordinates of the hole, if any.
A: The rational function is, R(x)=x-4x-2x+3x-4 thus, the common factor is x-4, thus the x co-ordinate…
Q: If there is no observable edge to the universe, can we determine where its center of expansion is?…
A: Let’s explain by taking a simple example of a balloon analogy to explain the expansion of the…
Q: (b) Calculate the demagnetizing field Ha of a uniformly magnetized sphere of radius R for r< R from…
A: The radius of the magnetized sphere is given as, R. The magnetic flux is given as, φmr=14πm·r→r3…
Q: 4. Calculate the number density of the negative Hydrogen ion (H-), relative to neutral Hydrogen in…
A:
Q: 27) Calculate the time it would take for 5 solar mass black to radiate its energy.
A: When stars with mass greater than 3 or 4 solar mass die the gravitational collapse is so large that…
Q: (a) What is the most likely type of interaction of the anti-electron neutrinos with the detector…
A:
Q: 8) Calculate the luminosity of a star that has a radius of 3Rs and a temperature of 2Tsum-
A: The luminosity of a star or a galaxy is defined as the energy radiated by the star or galaxy.…
Q: If the universe had a density equal to the critical density (a flat universe) and the Hubble…
A: Everything is contained within the universe. It includes all of the space as well as all of the…
Q: 26) To what size the Sun should shrink to become a black hole?pok
A: Schwarzschild radius is the limit to which a body can shrink before undergoing irreversible…
Q: At rest hydrogen has a spectral line at 143 nm if this line is observed at 138nm for the star Sirius…
A: Simple problem from special theory of relativity and specifically it's a problem of Doppler's…
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