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3 years ago

Help me plzzzzzz! Can someone help me with number 4 Idon’t get it

Physics

2 answers:

ryzh [129]3 years ago

6 0

Pollution of the spheres has impacted is the answer I think

andrew11 [14]3 years ago

5 0

I can only think of one at the moment but I would say that pollution and greenhouse gases have impacted out atmosphere. You could mention cars and factories. You could also say that oil spills and trash have impacted the hydrosphere.

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The basic barometer can be used to measure the height of a building. If the barometric readings at the top and at the bottom of

LekaFEV [45]

Answer:

(h₁-h₂) = 2.30 10² m

Explanation:

The pressure depends on the height with the formula

P = P_atm + rho g h

Let's apply this expression for the building

P₁ = P_atm + rho_air g h₁

P₂ = P_atm + rho_air g h₂

Subtract

P₁ - P₂ = roh_air g (h₁ –h₂)

The measured pressure is in mm Hg to take this unit to units of pressure must be multiplied by the density of mercury and the acceleration of gravity

P₁- P₂ = rho_Hg g (h₁-h₂) _Hg

rho_Hg g (h₁-h₂) _Hg = roh_air g (h₁ –h₂)

(h₁ –h₂) = rho_Hg / rho_air (h₁-h₂) _ Hg

Let's calculate

(h₁-h₂) = 13600 / 1.18 (695-675)

(h₁-h₂) = 2.30 10⁵ mm

Let's reduce to meter

(h₁-h₂) = 2.30 10⁵ mm (1 m / 10³ mm)

(h₁-h₂) = 2.30 10² m

4 0

3 years ago

List two things phytoplankton need to survive. Name at least two special adaptations phytoplankton have to stay in the photic zo

cluponka [151]

They need water and sunlight to survive

8 0

3 years ago

Which statement is accurate for these two sub-atomic particles. A) They both have a neutral charge. B) They both have a positive

Alexxx [7]

Yea the correct answer is C if u need an explanation then message me

3 0

3 years ago

Read 2 more answers

The object moves with _____ from A to B. It _____

ELEN [110]

Constant acceleration

8 0

2 years ago

laser produces a coherent beam of light that does not spread (diffract) as much in comparison to light from other sources, like

Fiesta28 [93]

Answer:

The diameter of the aperture is 0.321 m

Explanation:

The expression for the angle with wavelength is equal to:

$\theta _{R} =sin^{-1} (\frac{1.22\lambda }{d} )$ (eq. 1)

Where

λ = wavelength

d = diameter of the lens

The expression for the angle of the satellite is:

$\theta _{m} =tan^{-1} (\frac{delta-x}{h} )$ (eq. 2)

Where

h = distance between the Earth and the Moon

Like small angles:

$sin\theta _{R} =\theta _{R} \\tan\theta _{m} =\theta _{m}$

Matching both equations and clearing Δx:

$delta-x=h(\frac{1.22\lambda }{d} )$ (eq. 3)

Where

λ = 633 nm = 633x10⁻⁹m

For the width of the central maxima is equal:

$w=2*delta-x\\delta-x=\frac{w}{2}$

Where

w = 1.85 km

Replacing:

$delta-x=\frac{1.85}{2} = 0.925km$

From equation 3, the diameter of the aperture is:

$d=h(\frac{1.22\lambda }{delta-x} )$

h = 3.84x10⁵km = distance between the Earth and the Moon

Replacing:

$d=3.84x10^{5}km *(\frac{(1.22)*(633x10^{-9}m) }{0.925km} )=0.321m$

3 0

3 years ago