A radio broadcast left Earth in 1911. How far in light years has it traveled? If there is, on average, 1 star system per 400 cubic light years, how many star systems has this broadcast reached? Assume that the fraction of these star systems that have planets is 0.50 and that, in a given planetary system, the average number of planets that have orbited in the habitable zone for 4 billion years is 0.20. How many possible planets with life could have heard this signal?

Q: if life is based on information, what is that information ?

A: Given:If life is based on information.

Q: How can a planets atmosphere affect the width of the habitable zone in its planetary system?

A: The area around the heavenly star where the temperature is not very low nor very high is known as…

Q: Use the fact that 1m3= 1000 liter and show that 1 liter = 1000 cm3

A: 1 m=102 cm1m3=102 cm3=106 cm31000 liter=1m3103 liter =106 cm31 liter=106 cm3103         =103 cm3…

Q: Source A has a half-life of 10 million years, and source B has a half-life of 5 million years. After…

A: Given information :- half life of source A = 10 million years half life of source B = 5 million…

Q: A population grows exponentially at about 2% per year. Assume that the population starts with 15…

A: We know that you have given that A population grows exponentially at about 2% per year. and the…

Q: 7. Complete the table below for the habitability of several solar system planets. Temperature can be…

A: The solar system contains nine planets, out of which venus and mercury have a high temperature.…

Q: mmomet

A: Momentum of a body is the product of its mass and velocity. It is a vector quantity having a…

Q: A snail crawls 30 inches in 5 minutes what’s the snails speed ?

A: Here, 30 inches=30in.×0.0254m1 in.=0.762m And, 5 min=5min×60s1 min=300s

Q: The Drake equation In 1961 astronomer Frank Drakedeveloped an equation to try to estimate the number…

A: The Drake Equation is used to estimate the number of communicating civilizations in the cosmos or…

Q: The Search for Extraterrestrial Intelligence (SETI) makes use of a huge, multi-billion-dollar…

A: The network of radio telescopes around the world is a multi purpose project, not just solely for the…

Q: what would happen to a life-form if the information handed down to offspring was always the same?…

A: There would be no genetic mutations and thus no adaptations to the environment.  This would be great…

Q: osition of the jaws and the depth rod. our answer

A: Answer:

Q: Suppose there are l0,000 civilizations broadcasting radio signals in the Milky Way GaIaxy right now.…

A: Given :     No. of stars in the galaxy = 500 billion = 500 x 109 stars     Case-1    No. of…

Q: An intelligent alien living on a planet in the solar system orbiting Alpha Centauri, the nearest…

A: Given, speed of radio signal=186421 mil/sec Distance between earth to alpha=4.367 light year as we…

Q: What is astoroid?

A: Our solar system contains planets, moons, comets, asteroids, etc. which revolves around the sun.

Q: 16) Peter Singer claims that we should accept speciesism only as long as it involves the defense of…

A: 16) b) False. 17) d) All of these. 18);  c) : Wisdom

Q: If a sample of pennies had 75 heads and 25 tails out of 100, how many half-lives have passed?

A: Total 100 In first half life 100/2=50 In second half life 50/2=25

Q: a parent isotope has a half-life of 500,000 years. if a rock contained 10mg of the parent isotope…

A: Write the expression for the quantity left after time t. Here, No represents the original quantity,…

Q: How robotics changed the world?

A: How robotics changed the world?

Q: How is a habitable zone likely to  change over time? a. get narrower b. move further from the star…

A: In this question we have to answer how habitable zone changes over time. Please give positive…

Q: What is the Oobleck fee? And what are its benefits? And what are his tools? Where do we use it?

A: Solution: To discuss on Oobleck fluid

Q: Where does 1000 in step 2 came from?

A: When a satellite orbits the earth, the force of gravity on it due to the earth is balanced by the…

Q: 4. Early life on Earth formed in h. late September 5. Cambrian explosion would occur in f. mid…

A: 6) The Triassic Period (252-201 million years ago) 7)around 300,000 years ago. on that time 8)The…

Q: What is a Worm Hole? How can we travel into the Worm Hole?

A: Wormholes are solutions to the Einstein field equations for gravity that act as "tunnels,"…

Q: why is it pie - (pie/6)?

A: SHM: A particle accomplishes SHM when it oscillates in a straight line periodically in such a way…

Q: An intelligent alien living on a planet in the solar system orbiting Alpha Centauri, the nearest…

A:

Q: If there was a planet orbiting a first generation star, which planet in our solar system would it…

A: First-generation stars are very metal deficient (heavier than hydrogen) but massive. They are huge…

Q: What is Venturi-meter?

A: venturimeter is working based on the principle of Bernaulli's principle.

Q: In general will procyon have a long or short lifespan?

A:

Q: An intelligent alien living on a planet in the solar system orbiting Alpha Centauri, the nearest…

A: Recall t=2d/v d=distance between earth and the alpha century.

Q: Which statement correctly describes evidence that supports the theory of evolution

A:

Q: What is the best way to determine if a exoplanet has life inside it? Group of answer choices Detect…

A: Basically a exoplanet is just a planet but the difference between earth an a exoplanet we orbit a…

Q: (2055 2033883060706) 10-

A: Solution:We know that dipole moment is given as:μ→ = μy j^ + μz k^uniform magnetic field is given…

Q: A newly discovered star was found to have a surface temperature of approximately 5185 K. If an…

A: Luminosity(L)  of a star is proportional to the fourth power of its surface temperature(T).   In our…

Q: North America and Europe are moving apart at a rate of 2.5 cm/yr. They are now separated by 5,340…

A:

Q: How our sounds produced? What do their amplitudes and frequencies mean?

A: An enormous plentifulness demonstrates a huge sound wave. The recurrence of a sound wave shows the…

Q: how did you get from 0m1C1(T-T1)+m2C2(T-T2)=0 to T1=m2C2(T-T2)m1C1+T

A:

Q: How long is a microcentury in minutes? Note that 1 century is 100 years and 1 year is 365.25 days.

A:

Q: can you imagine life without electricity? what would you be our if there is no advancement in…

A: Yes,we can imagine life without electricity but in a measurable way. thanks to “thomas Alva Edison”…

Q: Define the general differences between an autotroph and a heterotrophs?

A: Introduction: Every planet on the surface of the earth needs some basic nutrition for its life.…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.