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Goshia [24]
3 years ago
7

A spring with a spring constant of 2.5 N/m is stretched by 2

Physics
1 answer:
mr_godi [17]3 years ago
3 0

Answer:

Eelas = 5 [J]

Explanation:

Elastic energy is associated with the ability that has a spring or any other material with elastic properties.

We can calculate the elastic energy by means of the following equation:

E_{elas}=\frac{1}{2} *k*x^{2}

where:

k = constant spring = 2.5 [N/m]

x = distance stretched = 2 [m]

E_{elas}=\frac{1}{2} *2.5*(2)^{2}\\E_{elas}=5[J]

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Seberkas cahaya monokromatik dijatuhkan pada kisi difraksi dengan 5000 goresan/cm menghasilkan spectrum garis terang orde kedua
Vlada [557]

Answer:

500 nm

Explanation:

In this problem, we have a diffraction pattern created by light passing through a diffraction grating.

The formula to find a maximum in the pattern produced by a diffraction grating is the following:

d sin \theta = m\lambda

where:

d is the distance between the lines in the grating

\theta is the angle at which the maximum is located

m is the order of the maximum

\lambda is the wavelength of the light used

In this problem we have:

\theta=30^{\circ} is the angle at which is located the 2nd-order bright line, which is the 2nd maximum

n = 5000 lines/cm is the number of lines per centimetre, so the distance between two lines is

d=\frac{1}{d}=\frac{1}{5000}=2\cdot 10^{-4} cm = 2\cdot 10^{-6} m

Re-arranging the equation for \lambda, we find the wavelength of the light used:

\lambda=\frac{d sin \theta}{m}=\frac{(2\cdot 10^{-6})(sin 30^{\circ})}{2}=5\cdot 10^{-7} m = 500 nm

4 0
3 years ago
When an apple falls towards the earth,the earth moves up to meet the apple. Is this true?If yes, why is the earth's motion not n
Harlamova29_29 [7]

Answer:

because the mass of the apple is very less compared to the mass of earth. Due to less mass the apple cannot produce noticable acceleration in the earth but the earth which has more mass produces noticable acceleration in the apple. thus we can see apple falling on towards the earth but we cannot see earth moving towards the apple.

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Which of these qualities most likely helped Copernicus construct the scientific explanation of the solar system?
Anna71 [15]
I would go with the third option because it seems logical. He had a big imagination and was very creative. Hope I helped
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3 years ago
Consider this situation: A rope is used to lift an actor upward off the stage. Of the forces listed, identify which act upon the
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6 0
4 years ago
Read 2 more answers
a water line starts the service with an altitude of 1200m over the sea level, what is the velocity of the water above 1050 m ove
Ilia_Sergeevich [38]

Answer:

Velocity = 94.85m/s

Explanation:

<u>Given the following data ;</u>

Height = 1200m

Vertical distance = 1050m

To find the time, we would use the second equation of motion;

S = ut + \frac {1}{2}at^{2}

Substituting into the equation, we have;

1200 = 0(t) + \frac {1}{2}*9.8*t^{2}

1200 = 0 + 4.9*t^{2}

1200 = 4.9*t^{2}

t^{2} = \frac {1200}{4.9}

t = \sqrt{122.45}

t = 11.07 secs

To find the velocity;

Mathematically, velocity is given by the equation;

Velocity = \frac{distance}{time}

Substituting into the above equation;

Velocity = \frac{1050}{11.07}

Velocity = 94.85m/s

Therefore, the velocity of the water above 1050 m over the sea level is 94.85m/s.

7 0
3 years ago
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