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- Please solve accurate. ThanksWhat is the vrms of hydrogen on the surface of the sun if its temperature is 5.36E3 degC? What is the vrms of hydrogen on the surface of the earth if its temperature is 21.2 degC?A window has heavy curtains in front of it. At night the curtains are closed to minimise heat loss. During the day the curtains are pulled aside exposing the glass window. How much heat is lost through the 1.0 m x 1.0 m square glass window pane that is 4mm thick when the inside temperature is 20 degree C and the outside temperature is -6 C (negative 6.0) in 12 hrs? ( 1m = 100 cm) (1m = 1000mm) %3D
- d&eA)The star 58 Eridani is a feint but naked-eye star similar to the Sun. Suppose that you are observing this star in the night sky without a telescope. Ignoring any interstellar extinction or atmospheric absorption, approximately how many photons per second arrive at your retina? Show all steps in calculation . B) The Mid-infared Instrument (MIRI , camera and spectrograph ) on the James Webb Space Telescope operates in the band 5-28 µm . For 58 Eridani , approximatley how many photons per second can be used by this instrument ? Assume that MIRI takes all the photons from the full JWST mirror . Show all steps in calcultation . Describe breifly two or three other factors which play a role in determining the sensetivitu of an instrument such as MIRI ?A stars wavelength is observed to be 200 nm. Calculate the approximate surface temperature of the star
- If a star has a surface temperature of 5000 K what will the maximum wavelength emitted by the star be?9Gauss's law states that fg.dA= -4RGM. A spherical star of mass M and radius R has a uniform density. By applying Gauss's law to a suitable Gaussian surface, show that the magnitude of g within the star rises linearly with radius r. In practice, a star is likely to have a higher density near its center. By referring to Gauss's law, explain in outline what effect this would have on g at a given radius r. Sketch g as a function of r for the above two situations (for r < R and assuming that in both cases the star has the same total mass M).
- A He-Ne laser with wavelength 632.8 nm is fired from a great distance toward a neutron star with mass 4.5 x 1030 kg and radius 12 km. What is the wavelength of light received at the neutron star’s surface?What is the total emittance of a cesium lamp at 2473.15 K with a lambda max of 1171.38 nm at this temperature.-According to appendix C: radius of the sun is 7 x 10^8 m