Do you really pay attention in your science class?

Question

1.How fast does life travel?
2.What is the distance of Astromocial Unit?
3.What is the distance between the earth & the sun?
4.How long does it take sunlight to reach the earth?

If,you don't know the answer! Don't bother by answering the damn question!

Answer 1

1.How fast does life travel?
- Life? Or do you mean light? Light travels at 186,000 miles per second (300,000,000 meters per second)

2.What is the distance of Astronomical Unit?
- An Astronomical Unit (or AU) is the distance between the Earth and the Sun, this is approximately 93,000,000 miles.

3.What is the distance between the earth & the sun?
- 1AU or 93,000,000 miles.

4.How long does it take sunlight to reach the earth?
- Sunlight takes approximately 8 minutes to reach the Earth.

I hope this helps. Good luck! :)

Answer 2

1. The years go fast, but the days go so slow.
2. Don't know, what "astromocial" is.
3. The distance between the earth and sun is one astronomical unit, AU, or 149 598 000 kilometers.
4. The speed of light is 3*10^8 m/s, so, 8.3 minutes.

Answer 3

Not really. Chemistry was first thing in the morning. Physics was right after lunch. I tended to sleep through both. I took up science as a hobby after college.

Anyhow, light travels at 300,000 km/sec. The speed of life is purely subjective, but it speeds up as you get older.

An astronomical unit (AU) is roughly 150 million km.

The distance from the Earth to the Sun in 1 AU.

It takes light about 8 minutes 20 seconds to travel that far.

Answer 4

I wish we could cover more astronomy in school. Most of these I learned on Forums or in books. All we learn is life science. Hm.

1. Life? What? If you mean light, 187,00 Miles a second.
2. Distance from sun to earth?
3. 93 Million miles. One AU.
4. 8 Minutes

Answer 5

Yes I pay attention.

1. How "fast" does _life_ travel? I do not know. For most non-sleeping humans, normal brain "speed" appears to be between 10 and 20 Hz (brain impulses switch up to 20 times per second), with 8 to 12 Hz most of the time for Alpha waves.
Beta waves can crank it up to 40 Hz during intense concentration -- or moments of panic.
(Hz is the symbol for Hertz, meaning cycles per second -- a computer's brain speed is counted in billion times per second: Giga-Hertz)

But that would be more like the speed of intelligence, not life.

The speed of a nervous impulse is around 3 m/s, which is a bit slow to avoid some dangers (takes almost one second for a signal to travel from the foot to the brain); I guess that is why we have reflexes.

Speed of _light_ is 299,792,458 m/s by definition. For most applications, 3 x 10^8 m/s (187,370 mi/s) is a good approximation (300,000 km/s).

2. An Astronomical Unit is 149,597,870.69 km (approx. 93.75 million miles). It is the distance from the Sun at which a small object of negligeable mass on a perfectly circular orbit would have an orbital period of exactly one year.

3. The distance from the Earth to the Sun varies, because our orbit is elliptical. We are closest (perihelion) in January and furthest away (aphelion) in July. In 2007, the distances were
perihelion: 147,093,602 km on Jan. 3, at 3 pm Eastern Standard Time
aphelion: 152,097,053 km on July 6, at 8 pm Eastern Daylight-Saving Time.

The "mean" distance (average) in 2007 is 0.999994 astronomical units: 149,596,940 km. Our orbit is made a bit wobbly by the interference from the other planets. The mean orbital distance is presently smaller than 1 astronomical unit, and it is getting bigger every year (by a tiny bit).
2006: between 0.999990 and 0.999991
2008: between 0.999995 and 0.999996
This change (less than 400 km per year) is NOT the same as the difference between perihelion and aphelion (a little over 5,000,000 km in 6 months).

4. The easy way is to divide one astronomical unit by the speed of light:
Using the usual approximations:
150,000,000 km divided by 300,000 km/s = 500 seconds (8m20s).
The more precise answer would depend on the actual distance on the day of interest (for example, at perihelion in 2007, it was
147,093,602 km divided by 299,792.5 km/s = 490.65 seconds (8m10.65s).

All distances from the Sun to the Earth are counted "centre-to-centre". If you want to get the shortest possible distance from the surface of the Sun to the surface of Earth, you would have to subtract the equatorial radius of each:
Sun = 696,265 km
Earth = 6,378 km.

The time it took, at perihelion, for light leaving the surface of the Sun to reach a person on Earth's surface who had the sun directly overhead was (approximately):
(147,093,602 - 702,643) km divided by 299,792.5 km/s =
146,390,959 km divided by 299,792.5 km/s =
488.3 seconds (8m 8.3s).

Answer 6

1. It depends on the medium. The fastest speed is in a vacuum, but through matter it can go much slower.
2. What everyone else said.
3. What everyone else said.
4. What everyone else said.

Answer 7

1. As far as I know, there is no speed of life. I don't believe you can measure it, since there is no single version of life with a specific speed.

2. 93 million miles

3. Average is 1 AU or 93 million miles, at furthest its 94.5 million miles, at closest its 91.4 million miles.

4. 8.21 minutes.

5. Could you be any more rude?

Answer 8

Judging by some of the really silly questions and answers on here, a lot of kids don't listen in science class.

Answer 9

for the 1st question - do you mean light or life? Maybe we learn about different stuff in science class in Australia, but I haven't heard about the life travel or the speed of life.

q4 - i believe is 8 to 10min or something like that.

Answer 10

1. is traditionally held to be 3.0*10^8 but its actually 2.98*10^8 a subtle but real difference