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One way astrophysicists have identi?ed "extrasolar" planets orbiting distant stars is by observing redshifts or blueshifts in the star's spectrum due to the fact that the star and planet each revolve around their common center of mass. Consider a star the size of our sun (mass = 1.99 X 1030 kg), with a planet the size of Jupiter (1.90 X 1027 kg) in a circular orbit of radius 7.79 X 1011 m and a period of 11.9 years.
(a) Find the speed of the star revolving around the system's center of mass.
(b) Assume that Earth is in the planet's orbital plane, so that at one point in its orbit the star is moving directly toward Earth, and at the opposite point it moves directly away from Earth. How much is 550-nm light redshifted and blueshifted at those two extreme points?
Air is confined at atmospheric pressure (101.3 kPa) in a cylinder whose volume is 0.22 m3. Calculate the increase in internal energy of the air
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An inductor in the form of a solenoid contains 460 turns and is 12.2 centimeter in length. Determine what is the radius of the solenoid
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A 550 -cm flask contains 0.450grams of a gas at a pressure of 140kPa, What is the molecular mass of this gas
Two balls of identical mass of 0.389 kg and with identical charges placed on them hang from the ceiling on identical strings of lengths 1.110 m as shown
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Light with a wavelength of 616 nm passes through a slit 7.14 μm wide and falls on a screen 1.80 m away. Find the linear distance on the screen from the central bright fringe to the first bright fringe above it.
A 50 kilogram parachute jumper descends at a steady 40 km/h. Determine what is the force of air on the parachute
How many gallons of gasoline are used in the United States in one day
q1. a proton is travelling to the right at. it has a head-on perfectly elastic collision with a carbon atom. the mass
The electric field midway between two equal but opposite point charges is 832 , and the distance between the charges is 11.6. evaluate the magnitude of the charge on each
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