Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
One of the great discoveries in astronomy in the past decade is the detection of planets outside the solar system. Since 1996, 100planets have been detected orbiting stars other than the Sun. As the planets themselves cannot be seen directly, telescopes can detect the small periodic motion of the star as the star and planet orbit around their common center of mass. Both the period of this motion and the variation in the speed of the star over the course of time can be decided observationally. The mass of the star is found from its observed luminance and from the theory of stellar structure. Iota Dracon is is the eighth brightest star in the constellation Draco. Observations show that a planet, with an orbital period of 1.50 y, is orbiting this star. The mass of IotaDraconis is 1.05MSun.
a) Estimation the size (in AU) of the semi main axis of this planet's orbit.
b) The radial speed of the star is observed to vary by627 m/s. Utilize conservation of momentum to find the mass of the planet. Suppose the orbit is circular, we are observing the orbit edge-on, and no other planets orbit IotaDraconis. Express the mass as a multiple of the mass of Jupiter.
a solid ball has a rotational inertia of 0.0314 kgm2. it is rotated by applying a 4.7 N force tangentiallyto it. the radius is 14 cm. what is the angular acceleration of the ball
An object of mass 15 kg falls from a height of 8.0 m above the ground. What will be its speed and kinetic energy when it hits the ground
a lightning bolt strikes one end of a steel lightning rod producing a 15000-a current burst that lasts for 65 micros.
There are some people who believe that Earth has a twin that orbits directly opposite the sun with exactly the same orbital elements and in the saem direction and thus unseen from Earth. The two planets are exactly 180 degrees opposed when they oc..
An electron with an initial speed of 4.90×105m/s is brought to rest by an electric field. What was the potential difference that stopped the electron
two traveling sine waves identical except for a phase difference of phi add so that their superposition produces
A transformer is used to operate a model train. The transformer,which is plugged into a standard electrical outlet, produces anoutput voltage of 13.3 V (rms), applied tothe train's tracks.
the back wall of a home aquarium is a mirror that is a distance of 46.0 cm away from the front wall. the walls of the
A guitar string is being restrung with a string having a diameter of 1.4 mm and a length of 0.82 m when no tension is applied. If the string has a Young's modulus of 1.4 x 10^11 N/m^2 and is tightened by wrapping it three times around a peg with a 2...
After the first spring compresses a distance of 32.1 cm, the second spring acts with the first to increase the force as additional compression occurs. The car comes to rest 47.0 cm after first contacting the two-spring system. Find the car's initi..
A soccer player kicks a ball from ground level with an initial velocity of 25 m/s at an angle of 30° above the horizontal. After 2.0 s, how many meters above the projection point is the ball
two uniformly charged insulating rods are bent in a semicircular shape with radius r 14.3 cm. if they are positioned
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd