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zubka84 [21]
2 years ago
14

The fastest airplane is the Lockheed SR-71. If an SR-71 flies 15.0 km west in 15.3 s, what is its average velocity in kilometers

per hour?
Physics
1 answer:
Lady_Fox [76]2 years ago
4 0

Answer:

3529 km/h west

Explanation:

The average velocity is given by:

v=\frac{d}{t}

where

d is the displacement

t is the time taken

For the plane in this problem, we have:

d=15.0 km

t=15.3 s \cdot \frac{1}{3600 s/h}=0.00425 h

Therefore, substituting into the formula,

v=\frac{15.0}{0.00425}=3529 km/h

and the direction is the same as the displacement (west).

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bija089 [108]

Answer:

Nodes.

Explanation:

Nodes are a point that are on a standing wave that never move.

7 0
3 years ago
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How can we protect space shuttles or astronauts from space radiation in the absence of the atmospheric layer?
Arisa [49]
Earth's protective magnetic bubble, called the magnetosphere, deflects most solar particles, but in the absence of atmospheric layer, Polyethylene is a good shielding material because it has high hydrogen content, and hydrogen atoms are good at absorbing and dispersing radiation.

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7 0
3 years ago
Balboa Park in San Diego has an outdoor organ. When the air temperature increases, the fundamental frequency of one of the organ
musickatia [10]

The fundamental frequency of one of the organ pipes will go up or increase.

When pressured air is forced into an organ pipe, it echoes at a particular pitch, generating the sound of the pipe organ. Each pipe has been adjusted to a particular pitch on the musical scale.

A musical instrument called an outdoor pipe organ is used to perform music. It produces some calming tones and has a really serene sound. The organ pipe produces the sound of the outdoor organ. The wavelength of the sound is also dependent on the length of the pipe. The fundamental frequency of one of the organ pipes will grow as the speed of the sound increases as the ambient air temperature rises.

The correct option is (c).

Learn more about frequency here:

brainly.com/question/254161

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6 0
1 year ago
Salt water is denser than fresh water. What ecosystem would be most effective by this fact?
Julli [10]
The Dead Sea is the answer.
6 0
3 years ago
A soap bubble appears red (λ = 633nm) at the point on its front surface nearest to the viewer. Assuming n = 1.35, what is the sm
alexira [117]

Answer:

The smallest film thickness is 117 nm.

Explanation:

Light interference on thin films can be constructive or destructive. Constructive interference is dependent on the film thickness and the refractive index of the medium.

For the first interference (surface nearest to viewer), the minimum thickness can be expressed as:

2t_{min} = \frac{wavelenth}{2n}

where n is the refractive index of the bubble film.

Therefore,

2t_{min} = \frac{633x10^{-9} }{(2)(1.35)}

2t_{min} =2.344x10^{-7}

∴ t_{min} =\frac{2.344x10^{-7} }{2}

t_{min} = 1.17x10^{-7} m = 117 nm.

7 0
3 years ago
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