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omeli [17]
2 years ago
9

Dash mean where the head of the state ine an elected person and not a heritary position​

Physics
1 answer:
strojnjashka [21]2 years ago
3 0
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A solid yellow line on your side of the center stripe means pass with care.<br> A. True<br> B. False
oee [108]

Answer:

B

Explanation:

a straight yellow is a no pass zone

7 0
3 years ago
What is the internal resistance of an automobile battery that has an emf of 12.0 V and a terminal voltage of 18.4 V while a curr
Effectus [21]

Answer:

0.888 ohm

Explanation:

We have given that the battery has an emf of 12 volt that E =12 volt

Terminal voltage V =18.4 volt

Current through the battery is =7.20 A

We have top find the internal resistance of the battery

Now according to Kirchhoff's law V=E+IR

So R=\frac{V-E}{I}=\frac{18.4-12}{7.2}=0.888\ ohm

So the value of internal resistance of battery is 0.888 ohm

5 0
3 years ago
PART ONE
stepladder [879]

Answer:

1. A1, B2, C3

2. 47.1°

Explanation:

Sum of forces in the x direction:

∑Fₓ = ma

f − Fᵥᵥ = 0

f = Fᵥᵥ

Sum of forces in the y direction:

∑Fᵧ = ma

N − W = 0

N = W

Sum of moments about the base of the ladder:

∑τ = Iα

Fᵥᵥ h − W (b/2) = 0

Fᵥᵥ h = ½ W b

Fᵥᵥ (l sin θ) = ½ W (l cos θ)

l Fᵥᵥ sin θ = ½ l W cos θ

The correct set of equations is A1, B2, C3.

At the smallest angle θ, f = Nμ.  Substituting into the first equation, we get:

Nμ = Fᵥᵥ

Substituting the second equation into this equation, we get:

Wμ = Fᵥᵥ

Substituting this into the third equation, we get:

l (Wμ) sin θ = ½ l W cos θ

μ sin θ = ½ cos θ

tan θ = 1 / (2μ)

θ = atan(1 / (2μ))

θ = atan(1 / (2 × 0.464))

θ ≈ 47.1°

5 0
3 years ago
2. An auditorium has 58 seats in the first row, 62 seats in the second row, 66 seats in the third row, and so
evablogger [386]
The answer is (a) hope it helped!<3






5 0
2 years ago
A chemist identifies compounds by identifying bright lines in their spectra. She does so by heating the compounds until they glo
padilas [110]

Answer:

 a)    λ = 189.43 10⁻⁹ m  b)    λ = 269.19 10⁻⁹ m

Explanation:

The diffraction network is described by the expression

      d sin θ= m λ

Where m corresponds to the diffraction order

Let's use trigonometry to find the breast

        tan θ = y / L

The diffraction spectrum is measured at very small angles, therefore

      tan θ = sin θ / cos θ = sin θ

We replace

      d y / L = m λ

Let's place in the first order m = 1

Let's look for the separation of the lines (d)

     d = λ  L / y

     d = 501 10⁻⁹ 9.95 10⁻² / 15 10⁻²

     d = 332.33 10⁻⁹ m

Now we can look for the wavelength of the other line

     λ  = d y / L

    λ  = 332.33 10⁻⁹ 8.55 10⁻²/15 10⁻²

    λ = 189.43 10⁻⁹ m

Part B

The compound wavelength B

      λ  = 332.33 10⁻⁹ 12.15 10⁻² / 15 10⁻²

      λ = 269.19 10⁻⁹ m

4 0
3 years ago
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