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3 years ago

9

All EM waves (light waves) travel at the same speed through the vacuum of space. If the different types of waves are distinguish

ed by their frequency, what basic characteristic of the waves determines their difference

1 answer:

Rudiy273 years ago

6 0

I don’t know the answer i just need the points

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When heating food, why do you think the oven gets hot to the touch while the microwave does not?

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The microwave only has the sides.

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What happens to light waves from a star as the star moves toward Earth?

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The similarity between thermal energy, heat and temperature?

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3 years ago

Si se deja caer un carrito de una pista de coches sin friccion y su altura inicial es de 1.4 metros, cual es la velocidad maxima

Svet_ta [14]

Answer:

$5.241\ \text{m/s}$

Explanation:

m = Masa del coche

g = Aceleración debida a la gravedad = $9.81\ \text{m/s}^2$

h = Altura = $1.4\ \text{m}$

v = Velocidad del automóvil en la parte inferior de la pista

Aquí asumimos que el automóvil desciende verticalmente. La energía potencial del automóvil se completará convertida en energía cinética en la parte inferior de la pista ya que no hay pérdida de energía.

$mgh=\dfrac{1}{2}mv^2\\\Rightarrow v=\sqrt{2gh}\\\Rightarrow v=\sqrt{2\times 9.81\times 1.4}\\\Rightarrow v=5.241\ \text{m/s}$

La velocidad máxima que puede alcanzar el coche es $5.241\ \text{m/s}$ .

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3 years ago