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3 years ago

3- Define light year. What quantity does it measure? what is one light year equal to in sl unit?

1 answer:

8 0

The light-year is a unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometres (9.46×1012 km) or 5.88 trillion miles (5.88×1012 mi).
Astronomical units: 63241 au; 0.3066 pc
Metric (SI) units: 9.4607×1015 m; 9.46075 Pm
Imperial & US units: 5.8786×1012 mi

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When NASA was communicating with astronauts on the Moon, the time from sending on the Earth to receiving on the moon was 1.33 s.

frez [133]

To solve this problem it is necessary to apply the concepts related to the kinematic equations of movement description, which determine the velocity, such as the displacement of a particle as a function of time, that is to say

$v = \frac{x}{t}\rightarrow x = v*t$

Where,

x = Displacement

v = Velocity

t = Time

Our values are given as,

$v=3*10^8m/s$

$t = 1.33 s$

Replacing we have that,

$x=v*t$

$x=(3*10^8)(1.33)$

$x = 399'000.000m$

Therefore the distance from Earth to the Moon is 399.000 km

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3 years ago

Which conditions are usually the effect of a low air pressure system?

Umnica [9.8K]

Explanation : High air pressure is generally associated with nice weather.

Low air pressure is generally associated with cloudy, rainy, or snowy weather.

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3 years ago

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In the aerials competition in skiing, the competitors speed down a ramp that slopes sharply upward at the end. The sharp upward

11111nata11111 [884]

Answer:

u = 11.6 m/s

Explanation:

The end of a launch ramp is directed 63° above the horizontal. A skier attains a height of 10.9 m above the end of the ramp.

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Let v is the launch speed of the skier. The maximum height attained by the projectile is given by :

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u = 11.6 m/s

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3 years ago

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garik1379 [7]

This is your perfect answer

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2 years ago

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3 years ago

3- Define light year. What quantity does it measure? what is one light year equal to in sl unit?​

3- Define light year. What quantity does it measure? what is one light year equal to in sl unit?