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JulijaS [17]
3 years ago
11

1. Johnny wants to know where the water line is in a dark well. He drops a penny into the well and counts until he hears the pen

ny hit the water. He counts exactly 3 seconds. How far down is the water line?
Physics
1 answer:
777dan777 [17]3 years ago
8 0

Answer:

3 feet down

Explanation:

i think

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A 5.00 kg object oscillates back and forth at the end ofa spring whose spring constant is 49.3 N/m. An obersever istraveling at
defon

Answer:

5.571 sec

Explanation:

angular frequency = √ (k/m) = √ (49.3 / 5) = 3.14 rad/s

Period To = 2π / angular frequency

Period To = 2π/3.14 = 2 × 3.14 / 3.142 = 2.00 sec which you got

T measured by the observer = To / (√ (1 - (v²/c²))) = 2 / √( 1 - 0.871111) = 2 / 0.35901 = 5.571 sec

t=2.00/(1-√((2.80*10^8)^2/(3.00*10^8)^2))= should have been  ( To / (√ (1 - (v²/c²))).  where To = 2.00 sec

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3 years ago
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I don't know what you mean by this question but I'm going to say Prism.
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3 years ago
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Determine the volume of an object that has a mass of 455.6 g and a density of 19.3 g/cm3.
likoan [24]

Answer:

V = 23.6062 cm³

General Formulas and Concepts:

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Chemistry</u>

<u>Gas Laws</u>

  • Density = mass / volume

Explanation:

<u>Step 1: Define</u>

Mass <em>m</em> = 455.6 g

Density <em>D</em> = 19.3 g/cm³

<u>Step 2: Solve for </u><em><u>V</u></em>

  1. Set up:                              19.3 g/cm³ = 455.6 g / V
  2. Isolate <em>V</em>:                          V = 23.6062 cm³
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3 years ago
IF ANYONEE HAS DONE THE MOMENTUM LAB PRACTICAL IN PHYSICS CAN YOU PLEASEEEEE GIVE ME THE ANSWERS I AM SOOOO LOSTT RNN :(
oksian1 [2.3K]

These are the correct answers. I couldn't get the rest of the answers


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4 years ago
How many years would take to terraform for Mars
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