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3 years ago

Which type of wave would actually slow down when moving from the air into the ocean?

2 answers:

4 0

Light waves would slow down when traveling through the ocean. Light is an electromagnetic wave that travels fastest through a vacuum. When particles like water are present, the wave slows down. The other wave types are physical - longitudinal or surface - waves that are sped up by the presence of particles that can transmit their energy faster.

zzz [600]3 years ago

3 0

Any electromagnetic wave, like light or heat, thus B is your Answer

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(a) The Sun orbits the Milky Way galaxy once each 2.60 x 108y , with a roughly circular orbit averaging 3.00 x 104 light years i

PilotLPTM [1.2K]

Answer:

Part a)

$a_c = 1.67 \times 10^{-10} m/s^2$

Part b)

$v = 2.18 \times 10^5 m/s$

Explanation:

Time period of sun is given as

$T = 2.60 \times 10^8 years$

$T = 2.60 \times 10^8 (365 \times 24 \times 3600) s$

$T = 8.2 \times 10^{15} s$

Now the radius of the orbit of sun is given as

$R = 3.00 \times 10^4 Ly$

$R = 3.00 \times 10^4 (3\times 10^8)(365 \times 24 \times 3600)m$

$R = 2.84 \times 10^20 m$

Part a)

centripetal acceleration is given as

$a_c = \omega^2 R$

$a_c = \frac{4\pi^2}{T^2} R$

$a_c = \frac{4\pi^2}{(8.2\times 10^{15})^2}(2.84 \times 10^{20})$

$a_c = 1.67 \times 10^{-10} m/s^2$

Part b)

orbital speed is given as

$v = \frac{2\pi R}{T}$

$v = \frac{2\pi (2.84 \times 10^{20})}{8.2 \times 10^{15}}$

$v = 2.18 \times 10^5 m/s$

5 0

3 years ago

Which of the following best states the difference between a description and an explanation? A. A description is a statement that

rjkz [21]

It is C. A description goes into the details about something, and an explanation is a statement that clarifies something, generally a question.

8 0

2 years ago

Why do balloons make noise when they pop?

mixer [17]

The pressure of the air inside the balloon is higher than outside, and when you pop the balloon, the high pressure air expands quickly and makes a popping sound.

6 0

2 years ago

Read 2 more answers

A force is applied to a block to move it up a 30° incline. The incline is frictionless, the block is initially at rest, F= 65.0

muminat

Answer:

0.96 m, upward

Explanation:

$\theta=30^{\circ}$