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3 years ago

Precautions to be taken for the displacement method

1 answer:

8 0

Volume by Displacement. The displacement method (submersion, or dunking method) can be used to accurately measure the volume of the human body and other oddly shaped objects by measuring the volume of fluid displaced when the object is submerged.

The following precautions should be taken very observantly:-

The line of sight must be perpendicular to measuring scale to avoid parallax error. Formation of bubbles inside the cylinder should be completely avoided. Any bubbles within leads to wrong measurements.

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When is a hypothesis developed in the scientific method?

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Answer:

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a person runs 27.0km west then turns around and runs 13.0km east what's the distance and displacement ?

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Answer:

See below

Explanation:

Distance = 27 + 13 = 40 km

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3 years ago

What is the mathematical equation for calculating the internal energy of a<br> diatomic gas? <br> -

Mariulka [41]

Answer:

U = 5/2 NkT.

Explanation:

A diatomic molecule = H₂, O₂, N₂ .....etc

A diatomic molecule has 5 degrees of freedom.

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2 rotational modes = ωx , ωy

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U = 5/2 NkT.

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3 years ago

A double-slit arrangement produces bright interference fringes for sodium light ( λ = 603 nm) that are angularly separated by 0.

ohaa [14]

Answer:

θ for water = 0.3684°

Explanation:

given data

wavelength λ = 603 nm

angle θ = 0.49°

index of refraction n = 1.33

to find out

angular fringe separation

solution

we know that double slit interference is here

m λ = d sin(θ) .................1

so for air it will be

m λ(air) = d sin(θ)air ...........2

and for water it will be

m λ(water) = d sin(θ)water .............3

now we take here ratio of equation 2 and 3

$\frac{\lambda (water)}{\lambda(air)}$ = $\frac{sin(\Theta)water}{sin(\Theta)air}$

and

ratio of wavelength is = $\frac{1}{n}$

ratio of wavelength = $\frac{1}{1.33}$

ratio of wavelength = 0.75187

sin(θ)water = sin(θ)air (0.75187)

sin(θ)water = sin(0.49) (0.75187)

sin(θ)water = 0.006429

so (θ)water is

(θ)water = 0.3683°

we notice here that by using small angle formula

we have approximate sin(θ) = θ

so θ for water is = $\frac{\Theta }{n}$

θ for water = $\frac{0.49}{1.33}$

θ for water = 0.3684°

7 0

3 years ago