3 years ago

Why does the sea floor spread

Physics

2 answers:

Naily [24]3 years ago

7 0

Because of the volcano's under it makes it open

Brut [27]3 years ago

4 0

Volcano under us hope it helps

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Momentum is a vector quantity that depends

MissTica

On the change in potential energy

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3 years ago

Light rays in a material with index of refrection 1.29 1.29 can undergo total internal reflection when they strike the interface

deff fn [24]

Answer:

The second material's index of refraction is 1.17.

Explanation:

Given that,

Refractive index of the material, n = 1.29

Critical angle is 65.9 degrees.

We need to find the second material's index of refraction. We know that at critical angle of incidence, angle of refraction is equal to 90 degrees. Using Snell's law as:

$n_1\sin \theta_c=n_2\sin (90)\\\\n_2=n_1\sin \theta_c\\\\n_2=1.29\times \sin (65.9)\\\\n_2=1.17$

So, the second material's index of refraction is 1.17.

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3 years ago

A vertical spring with a spring constant of 310 N/m is mounted on the floor. From directly above the spring, which is unstrained

EleoNora [17]

Answer:

7.3cm above the compressed spring.

Explanation:

We can use the conservation energy theorem to solve this problem:

$U_{1}+K_1=U_e+U_2+K_2\\m*g*h+0=\frac{1}{2}k*x^2+0+0\\\\h=\frac{k*x^2}{2*m*g}\\\\h=\frac{310N/m*(3.6*10^{-2})^2}{2*0.28kg*9.8m/s^2}\\\\h=0.073m$

The block was dropped 7.3cm above the compressed spring.

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3 years ago

Which stage of sleep usually comes before REM sleep

kumpel [21]

Stage 4

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4 years ago

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What is the atomic number of an Neon atom with 10 protons and 11 neutrons in its nucleus, & 10 Electrons in orbitals around

vesna_86 [32]

Answer:

Explanation:

The atomic number is only based on the number of the elements protons. The neutrons and electrons will only change the atomic mass and properties of the element. So the atomic number is 10.

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4 years ago

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