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Rus_ich [418]
3 years ago
6

What is the universe’s estimated age?

Physics
2 answers:
Veronika [31]3 years ago
7 0

The universe is (nearly) 14 billion years old, astronomers confirm. With looming discrepancies about the true age of the universe, scientists have taken a fresh look at the observable (expanding) universe and have estimated that it is 13.77 billion years old (plus or minus 40 million years).

Amanda [17]3 years ago
4 0

Answer:

13.77 Billion years old

Explanation:

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We have to use either of these formulas
sasho [114]

Answer:

646,000 m/s²

Explanation:

Given:

Δx = 0.840 m

v₀ = 0 m/s

v = 521 m/s

Find: a

v² = v₀² + 2aΔx

(521 m/s)² = (0 m/s)² + 2a (0.840 m)

a ≈ 646,000 m/s²

6 0
3 years ago
the explorer visited the three places and raised her hand when she reached each of them, where would the change in gravitational
Scorpion4ik [409]

Answer:

the Mariana trench

Explanation:

To perform this calculation we must use the law of universal gravitation

          F = G m M / r²

Where the gravitational potential energy is immediately deducted

         U = ∫ F dr

         U = - G m M (1 / r - 1 / Ro)

In general the point of Ro is taken at infinity so that here the energy is zero

Therefore, for this problem we will use the equation

           U = - G m M / r

Let's calculate the distance, for the three requested points

-Ecuador

         R = 6370 km (1000 m / 1 km)

         R = 6.370 10 6 m

- Mariana Trench

This is 11 km deep

        R = 6370 -11 km = 6359 km

        R = 6.359 106 m

- The Chimborazo

      R = 6384 Km

      R = 6.384 10 6 m

We can appreciate that if we introduce these values ​​in the formula, the one that gives the greatest change would be the one with the least distance. Let's calculate it,

 

- Ecuator

      U = - (G mM) / (6.370 106)

      U = - (GmM) 1.5699 10-7 J

- mariana trench

      U = - (GmM) 1 / 6,359 106

      U = - (GmM) 1.5725 10-7 J

- Chimborazo

      U = - (GmM) 1 / 6,384 106

      U = - (GmM) 1.5664 10 -7 J

Here we can see that the greatest value is that of the Mariana trench

3 0
3 years ago
Read 2 more answers
Derive an equation of motion s=ut+1/2at2 for an object moving in straight line​
igor_vitrenko [27]

Answer:

sut12at2

Explanation:

sorry just need points

5 0
3 years ago
The break light on a car is connected to a 12V battery. If the resulting current is 0.4A what is the resistance of the brake lig
ludmilkaskok [199]

Answer:

30

Explanation:

well I got it right but I'm not sure if it's the same thing

4 0
2 years ago
A point charge of -2 µC is located at the origin. A second point charge of 6 µC is at x = 1 m, y = 0.5 m. Find the x and y coord
Soloha48 [4]

Answer:

x coordinate = -1.66 m

y coordinate is = -0.825m

Explanation:

Suppose z be the distance form the first charge and z + sqrt(1^2 +.5^2) be the distance from the second So z + sqrt(1+.25) = z + 1.12

We have k*2.0x10^-6/s^2 = k*6x10^-6/(s+1.12)^2

0.0356s^2 -0.019s-0.0897=0  

s=1.876m

The angle of the line between the two charges is arctan(.5/1) = 26.6o

x coordinate = -1.876*cos(26.6) = -1.66m

y coordinate is -1.876*sin(26.6) = -0.825m

3 0
3 years ago
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