1 Answers
Call
Talk Doctor Online in Bissoy App
If Proxima Centauri is the next nearest star to Earth after the sun and it is 4.2 light years, does that mean every star we see in the night sky is farther away than 4.2 light years?
Its visual magnitude is about 11.0
1 Answers 1 views
Which is the nearest star to the Earth: The Sun or Alpha Centauri?
Next nearest star is proxima century 4 .3. light years away. Sun is one A U away from Earth.149597870 KM.
1 Answers 1 views
Alpha Centauri, the nearest star, is just over 4 light years away. Traveling at a speed of 2000 miles per hour (the speed of a fast jet airplane), how long would it take to get there in years?
1 light year = 5.88 E+12 miles. So, at 2000 mph, the time to reach Alpha Centauri is 4 X 5.88E+12/2000 hours = 1.176E+10 hours = 1.176E+10/(24 X 365.256) years...
1 Answers 1 views
Is Proxima Centauri the nearest star to the earth or sun?
The difference between Earth and Sun is only 8.2 light minutes. So it does not matter whether it is Sun or Earth. The distance 4.243 light years is 2230120 light...
1 Answers 1 views
What is the scientific notation for distance from Earth to Alpha Centauri? The distance from Earth to the nearest star outside the solar system is approximately 25,700,000,000,000 miles.
Alpha Centauri is the nearest star as far as present knowledge allows. So the distance to Alpha Centauri is 25700 000 000 000 Putting this value into scientific notation involves...
1 Answers 1 views
Proxima Centauri is 4.3 light-years away from the Sun. How many miles away is it from the Sun?
$1ly~~5.8786*10^12mi$ Therefore, $4.3ly~~4.3(5.8786*10^12)=2.5278*10^13mi$
1 Answers 1 views
If Proxima Centauri is 4.3 light-years from the sun, how far away is Proxima Centauri from the sun in kilometers?
Lighttravels 300000 kilometers inone second
1 Answers 1 views
On a journey to the Alpha Centauri star system, a space probe travels a distance of 4.12×1016 meters in 1.73×1010 seconds. Find its average speed in meters per second and how long did the journey take in light years?
The average speed is $(4.12 E+16)/(1.73 E+10)$ meter/s =2.38 E+03 km/s. The distance of Alpha Centauri is about 4.3 light years= 2.7 E+05 AU = 4.05 E+13 km. The time...
1 Answers 1 views
If the Oort cloud extends half way to Alpha Centauri, wouldn't this mean that the Centauri system's cloud would intersect ours?
The Oort Cloud is an extended shell of icy objects that exist in the outermost reaches of the solar system. It is named after astronomer Jan Oort, who first theorised...
1 Answers 1 views
Half-life of carbon-14 is 5730 years. A piece of wood that contained 0.200g of Carbon-14 when it was alive now contains 0.0125g of Carbon-14. How old is the piece of wood?
5730 years old
11460 years old
17190 years old
22920 years old?
$(1/2)^(t/5730)(I)=A$ I = initial amount, A = current amount, t = years I=0.200g, A= 0.0125g, solve for t $(1/2)^(t/5730)(0.200)=0.0125$ $(1/2)^(t/5730)=0.625$ $log_(1/2)((1/2)^(t/5730))=log_(1/2)0.0625$ $t/5730=4$ $t=22920$
1 Answers 1 views