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irakobra [83]
3 years ago
12

What can be known about the density of sodium

Physics
2 answers:
butalik [34]3 years ago
8 0
It’s D. It will be the same as the other reactant
lesya692 [45]3 years ago
4 0
D? maybe i’m trying to. see if it’s d or b
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If the frequency of a wave is 400hz and it’s wave length is2.5 what is the velocity ?
gizmo_the_mogwai [7]
To begin with, we can use the formula that links frequency, wavelength and velocity.

Because you already have the wavelength and the frequency, you just need to solve for velocity. You can do this by multiplying each side of the equation by frequency.

Therefore, 400 x 2.5 = 1000m/s.

Hope this helps :)

8 0
2 years ago
Do the rock layers from the various locations that you investigated record evidence of an asteroid impact on Earth? Make a CLAIM
KiRa [710]

Answer:

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8 0
3 years ago
Can someone pls match these
Lostsunrise [7]
Temperature - The measure of the average kinetic energy of a substance

Internal Energy - Total potential and kinetic energies of the particles of a substance

Heat - Thermal energy that flows from one substance to another

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6 0
3 years ago
A planet is orbiting its star at a maximum radius of 1.2 x 10^7 meters. If the mass of the star is 2 x 10^30 kg, what is the tim
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5 0
2 years ago
A glass is half-full of water, with a layer of vegetable oil (n = 1.47) floating on top. A ray of light traveling downward throu
Shtirlitz [24]

Answer:

critical angle    = 64.79°

ray will not penetrate into the water

Explanation:

given details

refractive index of oil n1 = 1.47

refractive index of water n2= 1.33  

incident angle = 71.4 °

\theta_c = sin^{-1}(\frac{n2}{n1})

        = sin^{-1}(\frac{1.33}{1.47}

     critical angle    = 64.79°

incident angle > critical angle = reflection

incident angle < critical angle = refraction

In this case, 71.4 > 64.79 therefore it will undergo total internal reflection

therefore ray will not penetrate into the water

7 0
3 years ago
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