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katen-ka-za [31]
2 years ago
12

True or false please help me now.

Physics
1 answer:
jolli1 [7]2 years ago
8 0

Answer:

false

Explanation:

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At present most of the world's energy needs are supplied by what kind of energy
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Which type of reaction is this?<br> CH3COOH + H20 2 H+ + CH3C00
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dissociation of acetic acid in water

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1) if you could eliminate one item from your diet to improve your heath, what would it be?
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3 0
3 years ago
Read 2 more answers
Consider two massless springs connected in series. Spring 1 has a spring constant k1, and spring 2 has a spring constant k2. A c
Andru [333]

Answer:

a. k = (1/k₁ + 1/k₂)⁻¹ b. k = (1/k₁ + 1/k₂ + 1/k₃)⁻¹

Explanation:

Since only one force F acts, the force on spring with spring constant k₁ is F = k₁x₁ where x₁ is its extension

the force on spring with spring constant k₂ is F = k₂x₂ where x₁ is its extension

Let F = kx be the force on the equivalent spring with spring constant k and extension x.

The total extension , x = x₁ + x₂

x = F/k = F/k₁ + F/k₂

1/k = 1/k₁ + 1/k₂

k = (1/k₁ + 1/k₂)⁻¹

B

The force on spring with spring constant k₃ is F = k₃x₃ where x₃ is its extension

Let F = kx be the force on the equivalent spring with spring constant k and extension x.

The total extension , x = x₁ + x₂ + x₃

x = F/k = F/k₁ + F/k₂ + F/k₃

1/k = 1/k₁ + 1/k₂ + 1/k₃

k = (1/k₁ + 1/k₂ + 1/k₃)⁻¹

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3 years ago
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most fossils are found in sedimentary rocks

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