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Sergeeva-Olga [200]
3 years ago
15

Can someone plz help me with this it be appreciated I’m confused

Physics
1 answer:
agasfer [191]3 years ago
7 0
Yes I can help describe it but I need to see the graph that’s on top
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Which country had the largest population in 1997
nignag [31]
China i hope this helped
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3 years ago
Who is Isaac Newton?<br><br>Take the points, Im leaving Brainly..​
icang [17]

Answer: English

. mathematician

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Explanation:

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2 years ago
Will mark brainliest! Please help!
djverab [1.8K]

Answer:

30 seconds

Explanation:

A = A02^-(t/hl)

--> ln(A/A0) = -(t/hl)ln2

solving for hl,

hl = -t x ln2 /ln(A/A0)

= -(60 min)xln2/ln(50/200)

= 0.5 min or 30 seconds

3 0
3 years ago
The submarine emits a pulse of sound to detect other objects in the sea. The sped of sound in sea water is 1500m/s. An echo is r
r-ruslan [8.4K]

Answer:

d = 375 m

Explanation:

The speed of sound is constant in any medium, therefore we can use the uniform motion relationships

          v = x / t

          x = v t

In this case it indicates that the time since the sound is emitted and received is t = 0.50 s, in this time the sound traveled a round trip distance

           x = 2d

          2d = v t

          d = v t/2

     

let's calculate

          d = 1500 0.5 / 2

          d = 375 m

3 0
3 years ago
You are driving to the grocery store at 18 m/s. You are 120 m from an intersection when the traffic light turns red. Assume that
andrew-mc [135]

Answer:

11.64225 m

Explanation:A = 45 m/s – 15m/s / 6s  

A = 5m/s^2

8 0
3 years ago
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