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4 years ago

5

A specific example of how light year is used in space exploration. Pick one object in space (the nearest star, the nearest galax

y, the edge of the universe, etc.) and tell how far this object is from earth and how long it would take light to travel there.

1 answer:

VladimirAG [237]4 years ago

5 0

Alpha Centauri A is about 93 million miles away from the Earth and it takes light 4.367 years to reach there.

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While sitting in a moving bus you throw an apple up into the air. The apple will land back into your hand.

Neko [114]

False because you have moved after you through the apple in the air

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3 years ago

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Sladkaya [172]

Answer:

0.001 s

Explanation:

The force applied on an object is equal to the rate of change of momentum of the object:

$F=\frac{\Delta p}{\Delta t}$

where

F is the force applied

$\Delta p$ is the change in momentum

$\Delta t$ is the time interval

The change in momentum can be written as

$\Delta p=m(v-u)$

where

m is the mass

v is the final velocity

u is the initial velocity

So the original equation can be written as

$F=\frac{m(v-u)}{\Delta t}$

In this problem:

m = 5 kg is the mass of the fist

u = 9 m/s is the initial velocity

v = 0 is the final velocity

F = -45,000 N is the force applied (negative because its direction is opposite to the motion)

Therefore, we can re-arrange the equation to solve for the time:

$\Delta t=\frac{m(v-u)}{F}=\frac{(5)(0-9)}{-45,000}=0.001 s$

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3 years ago

WhAt is this question??????????

valina [46]

Answer:

Period = 7

Group = Actinides group

Family = Actinides Family

Explanation:

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uranium is the member of Actinoides group it is also called Actinide group, And it has element whose atomic is number is 89 to 103. The atomic number of the uranium is 92. So, the uranium element is belongs to Actinide group

Uranium found in actinide family of periodic table, and actinides family has element whose atomic number is greater than or equal to 89 and less than or equal to 103.

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Degger [83]

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Explanation:

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