1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
soldier1979 [14.2K]
3 years ago
9

A light-year is the distance light travels in one year (at speed = 2.998 × 108 m/s). (a) how many meters are there in 11.0 light

-years? m (b) an astronomical unit (au) is the average distance from the sun to earth, 1.50 × 108 km. how many au are there in 11.0 light-years? au (c) what is the speed of light in au/h? au/h
Physics
1 answer:
larisa [96]3 years ago
8 0
<span>The answers are as follows:

(a) how many meters are there in 11.0 light-years?

11.0 light years ( 365 days / 1 year ) ( 24 h / 1 day ) ( 60 min / 1 h ) ( 60 s / 1 min ) ( 2.998x10^8 m/s ) = 1.04x10^17 m

(b) an astronomical unit (au) is the average distance from the sun to earth, 1.50 × 108 km. how many au are there in 11.0 light-years?

1.04x10^17 m ( 1 au / </span>1.50 × 10^8 km <span>) ( 1 km / 1000 m) = 693329.472 au

(c) what is the speed of light in au/h? au/h

</span>2.998 × 10^8 m/s ( 1 au / 1.50 × 10^8 km ) ( 1 km / 1000 m) ( 3600 s / 1 h ) = 7.1952 au/h

You might be interested in
The discovery that one current-carrying wire exerts a force on a second current-carrying wire was made by _________. Coulomb Oer
loris [4]
<span> All of the choices were physicists, bu</span>t the answer was Ampere. The discovery that one current-carrying wire exerts a force on a second current-carrying wire was made by Andre-Marie Ampere.
6 0
3 years ago
Read 2 more answers
A flight into space by a spacecraft where the spacecraft returns to Earth without achieving orbit is called a
Gwar [14]

b. par orbital flight

may be .

4 0
2 years ago
A car traveling on a straight road at 10 meters per second accelerates uniformly to a speed of 21 meters per second in 12 second
labwork [276]
21+10=31 because you can see that 21 and 10 are in metres while 12 is in seconds so 21+10=31 is the answer.
6 0
3 years ago
The smallest detail visible with ground-based solar telescopes is about 1 arc second. How large a region (in km) does this repre
mestny [16]

Answer:

x = 727.5 km

Explanation:

With the conditions given using trigonometry, we can find the tangent

       tan θ = CO / CA

With CO the opposite leg and CE is the adjacent leg which is the distance from the Tierral to Sun

   

        D =150 10⁶ km (1000m / 1 km)

        D = 150 10⁹ m.

We must take the given angle to radians.

       1º  = 3600 arc s  

       π rad = 180º

       θ = 1 arc s (1º / 3600 s arc) (pi rad / 180º) =

       θ = 4.85 10⁻⁶ rad

That angle is extremely small, so we can approximate the tangent to the angle

     

       θ = x / D

       x = θ D

       x = 4.85 10-6  150 109

       x = 727.5 103 m

       x = 727.5 km

4 0
3 years ago
The atmosphere protects us from _____ and _____.
sveticcg [70]

Answer: B. meteorites, UV rays

The earth's atmosphere plays an important role in shielding the space rocks and meteorites enters inside the earth due to collision with the celestial body. Due to high heat and pressure in the mesospheric layer of the atmosphere these meteorites burned up before reaching the biosphere or hydrosphere system of the earth. The UV rays are protected from entering into the earth atmosphere by the ozone layer present in the stratosphere of the atmosphere. Both meteorites and UV rays can negatively effect the human population. Therefore, the atmosphere is an agent which provides protection against them.

7 0
3 years ago
Read 2 more answers
Other questions:
  • A cell phone weighing 80 grams is flying through the air at 15 m/s. What’s is it’s kinetic energy
    5·1 answer
  • What is the acceleration of a car that moves at a steady velocity of 100km/h for 100s?
    6·1 answer
  • Suppose you are in an elevator that is moving upward with a constant velocity. A scale inside the elevator shows your weight to
    9·1 answer
  • About 800 billion years ago there was series of ice ages , why ?????
    14·1 answer
  • In a particular television picture tube, the measured beam current is 23.3 µA . How many electrons strike the tube screen every
    6·1 answer
  • Jupiter's moon Io has active volcanoes (in fact, it is the most volcanically active body in the solar system) that eject materia
    11·1 answer
  • Water flows from one reservoir to another a height, 41 m below. A turbine (η=0.77) generates power from this flow. 1 m3/s passes
    5·1 answer
  • Which of the following types of lithospheric crusts collide to produce large mountains such as the Himalayan mountains?
    8·1 answer
  • A bubble at the bottom of the lake to the surface within 10.0 seconds what is the depth of the lake
    8·1 answer
  • An 80,000 kg plane is flying at 900 km/h at a height of 10 kilometers. What is its total mechanical energy? Group of answer choi
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!