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HIPPARCOS (an acronym for HIgh Precision PARallax COllecting Satellite) was a scientific mission of the European Space Agency (ESA), launched in 1989 and operated between 1989 and 1993. It was the first space experiment devoted to astrometry, the accurate measurement of star positions, distances from us, parallaxes, and proper motions.
(a). If the measured parallax shift of star A was 0.1 arcsecs and the parallax shift of star B was 0.05 arcsecs, which star was farther away from the Earth, why?
(b). What is the distance of the farthest star in parsecs?
(c). What is the distance of the farthest star in light-years?
What is the velocity of the beam of electrons that go undeflected when passing during perpendicular electric and magnetic fields of magnitude 4700 V/m and 3.6×10-3 T, correspondingly.
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Indicate the negative x direction by including a negative sign in the answer, but omit a sign for the positive x direction.
Suppose that each of a person's hands makes contact with a different conductor over a surface area of 11.0 cm2. Find the resistivity of the skin
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An electric scooter has a battery capable of supplying 140 Wh of energy. If friction forces and other losses account for 60.0 percent of the energy usage, what altitude change can a rider achieve when driving in hilly terrain, if the rider and scoote..
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how much weight must each man support. by how much would the temperature of the air rise over a period of 2.0 h due to the metabolism of the people.
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