Physics, 30.08.2019 03:00 smithsa10630
The lyman alpha spectral line of hydrogen ( 122 nanometers) differs by 1.8 x 10meter in spectra taken at the edge of the sun's equator relative to spectra taken at the middle. a) we expect the relative speeds of the two sides of the sun to be much smaller than c. find the expression for the fractional doppler shift in wavelength to lowest order in v/c. b) show that the size of the earth's orbit is given by orbit142 λθπ where psun is the sun's rotational period and θ is the angular diameter of the sun viewed from earth. determine the speed of a particle on the equator due to the sun's rotation, in kilometers per second. c) he sun's rotation period is known to be psun 24 days, and it subtends 05 degrees on the sky. determine the radius of earth's orbit
Answers: 2
Physics, 22.06.2019 11:20
Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.
Answers: 1
Physics, 22.06.2019 14:30
Which of these is constant for all types of electromagnetic radiation in a vacuum? select one: a. wavelength b. frequency c. photon energy d. amplitude e. velocity
Answers: 3
Physics, 23.06.2019 00:00
Three resistors are connected in series across a 15-v power supply. if the potential drops across resistors 1 and 2 are 4.1 volts and 3.1 volts, what is the exact potential drop (in volts) across resistor 3?
Answers: 2
Physics, 23.06.2019 01:30
Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? round your answer to the nearest tenth. s how far will the football travel before it lands? round your answer to the nearest tenth. m
Answers: 3
The lyman alpha spectral line of hydrogen ( 122 nanometers) differs by 1.8 x 10meter in spectra take...
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