Velocity vectors point in the same direction as displacement?

Physics

2 answers:

liq [111]2 years ago

8 0

Explanation:

You walk 53m to the north, then you turn 60° to your right and walk another 45m. Determine the direction of your displacement vector. Express your answer as an angle relative to east

fiasKO [112]2 years ago

4 0

Not always.

Sometimes.

Once in a while.

Only if the tail of the velocity vector is pointing toward the place where the motion started from.

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the refractive index of cooking oil is 1.47, and the refractive index of water is 1.33. A thick layer of cooking oil is floating

VARVARA [1.3K]

When light travels from a medium with higher refractive index to a medium with lower refractive index, there is a critical angle after which all the light is reflected (so, there is no refraction).

The value of this critical angle can be derived by Snell's law, and it is equal to
$\theta_C = \arcsin ( \frac{n_2}{n_1} )$
where n2 is the refractive index of the second medium and n1 is the refractive index of the first medium.

In our problem, n1=1.47 and n2=1.33, so the critical angle is
$\theta_C = \arcsin( \frac{1.33}{1.47} )=\arcsin (0.91)=65^{\circ}$

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nata0808 [166]

Gravitational potential energy can be described as m*g*h (mass times gravity times height).

Originally,
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After it is moved to a 1m shelf:
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To find how much energy was added, we subtract final energy from initial energy:

147 J - 44.1 J = 102.9 Joules.

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Ocean breezes are due to which method of heat transfer?

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VMariaS [17]

Answer:

(a). Their speed during that run is 10 m/s.