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Elenna [48]
3 years ago
8

The critical angle for water is 49°. If a ray of light

Physics
1 answer:
Sonja [21]3 years ago
3 0

Answer:

Snell's Law states

Ni sin i = Nr sin r

Judging from the question the source of the ray is in the water (directed up)

or NI = 1 / sin 49      Ni = 1.325 deg     the critical angle

From inside the pond:

Nr = 1.325 * sin 45 / 1 = 94 deg  

So refraction can occur  outside the pond and you do not have total internal refection.

 

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Which form of the law of conservation of energy describes the motion of the block as it slides on the floor from the bottom of t
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Answer:

Explanation:

Let assume begins movement at zero point, that is, height is equal to zero. The block has an initial linear kinetic energy and no gravitational potential energy and end with no linear kinetic energy, some gravitational potential energy and work losses due to slide friction. In mathematical terms, this system can be model as follows:

K_{1} = U_{2} + W_{loss, 1 \longrightarrow 2}

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Severus Snape knows that density of his powder is 3.00 g/cm3 . He also knows he needs 3.00 cm3 of this powder. What mass in gram
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He requires 1 gram of mass.

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The density is defined as:

\rho = \frac{m}{V}  (1)

Where m is the mass and V is the volume.

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m = \rho \cdot V (2)

m = (3.00g/cm^{3})(3.00cm^{3})  

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A shell is fired from the ground with an initial speed of 1.60 × 103 m/s (approximately five times the speed of sound) at an ini
Volgvan

Answer:

The horizontal range will be 2.55\times 10^5m

Explanation:

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3 years ago
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