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!
Imagine that a civilization in another planetary system is sending a radio signal toward Earth. As our planet moves in its orbit around the Sun, the wavelength of the signal we receive will change due to the Doppler effect. This give SETI scientists a way to distinguish stray signals of terrestrial origin (which will not show this kind of wavelength change) from intrerstellar signals.
(a). Use the average orbital speed of the Earth as 29.79 (km/s) to calculate the speed of the Earth in its orbit. For simplicity, assume the orbit is circular.
(b). If the alien civilization is transmitting at a frequency of 3000 MHz, what wavelength (in meters) would we receive if the Earth were moving neither toward nor away from their planet?
(c) The maximum Doppler shift occurs if the Earth's orbital motion takes it directly toward or directly away from the alien planet. How large is that maximum wavelength shift? Express your answer both in meters and as a percentage of the unshifted wavelength you found in (b).
(d) Discuss why it is important that SETI radio receivers be able to measure frequency and wavelength to very high precision.
A skier traveling 11.0 m/s reaches the foot of a steady upward 19 degree incline and glides 16m up along this slope before coming to rest. compute the average coefficient of friction
a snow mobile has a position vector 42.1 m at 98.0 degrees counter clockwise from the x axis and velocity of 5.35 ms at
A parallel-plate air capacitor is to store charge of magnitude 290pC on each plate when the potential difference between the plates is 36.0V, If the area of each plate is 6.80 cm2, what is the separation between the plates
A 7.55-g bullet from a 9-mm pistol has a velocity of 389.0 m/s. It strikes the 0.745-kg block of a ballistic pendulum, what was the velocity of the bullet as it emerged from the block
an athlete executing a long jump leaves the ground at a 32.5 degree angle and travels 7.67 meters.what was the take off
A 0.138-A current is charging a capacitor that has square plates 5.20 cm on each side. The plate separation is 4.00 mm. Find the displacement current between the plates
How does the coefficient of static friction compare with the coefficient of kinetic friction for the same surfaces and areas - Why is it important to reduce friction during the operation of machinery?
An orchestra is tuning its instruments using a tone at a frequency of 440 Hz. A man comes zipping by on a very quiet, electric scooter at a speed of 28 m/s. What tone does the man hear as he approaches the orchestra
A circular loop of wire rests on a table. A long, straight wire lies on this loop, directly over its center, as the drawing illustrates. The current I in the straight wire is decreasing. In what direction (clockwise, counter clockwise or no direction..
Ultraviolet light with the wave lenght of 400 nm strikes metal surface with a work function of 2.2 electron volts. Calculate the stopping potential of the situation
The potential difference between the terminals of a battery is 12V when measured directly using a voltmeter. What is this maximum power
four identical metal spheres have charges of qa -8.0 microc qb-2.0 microc qc5.0 microc and qd12.0 microc.a two of the
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