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matrenka [14]
3 years ago
12

The train with a mass of 49 kg × 10⁴ kg departs from the place and in 25 seconds reaches a speed of 5m / s, determine the attrac

tive force of the locomotive?​
Physics
1 answer:
mote1985 [20]3 years ago
5 0

Answer:

Read this entry from a blog about service dogs.

Lexie, an eight-month-old black Labrador retriever, is sleeping quietly at my feet. I can’t help but think that her soft, velvety ears and alert brown eyes would make her the perfect “doggie model” for pet magazines and pet store ads. However, Lexie will soon have a much more important job to do. In a few months, she will become the loyal companion and service dog for a young man who has been blind since birth. She will help him board public transportation, such as buses, subways, and trains, and she will help him safely cross busy intersections. Lexie will even help the young man avoid obstacles, such as high curbs and low overhangs. Like all dogs in our organization, Lexie has undergone months of specialized training to help a visually impaired person lead an active and independent life.

What is the secondary purpose of this blog?

to inform readers about seeing-eye dogs

to entertain readers with details about Lexie

to persuade readers to train service dogs

to convince readers to adopt Labrador retrievers

Explanation:

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Warm air is _____ dense than cold air, and warm air holds _____ moisture than cold air.
trasher [3.6K]

Answer:

Warm air is <u>less</u> dense than cold air, and warm air holds <u>more</u> moisture than cold air.

Explanation:

<em>H</em><em>O</em><em>P</em><em>E</em><em> </em><em>T</em><em>H</em><em>I</em><em>S</em><em> </em><em>H</em><em>E</em><em>L</em><em>P</em><em>S</em><em> </em><em>A</em><em>N</em><em>D</em><em> </em><em>H</em><em>A</em><em>V</em><em>E</em><em> </em><em>A</em><em> </em><em>N</em><em>I</em><em>C</em><em>E</em><em> </em><em>D</em><em>A</em><em>Y</em><em> </em><em><</em><em>3</em>

4 0
2 years ago
A stone is thrown vertically upward with a speed of 20.0 m/s. (a) How fast is it moving when it reaches 12.0 m? (b) How long is
kaheart [24]
<span>(a) How fast is it moving when it reaches 12.0 m?
To determine the velocity as it reaches 12.0 m, we use one of the kinematic equations,
</span>V^2 = Vo^2 + 2gh 
<span>where Vo = 20 m/s. </span>
<span>           g = -9.8 m/s^2 </span>
<span>           h = 12.0 m. </span>
V^2 = 20^2 + 2(-9.8)(12.0) 
<span>V^2 = 164.8
V = 12.84 m/s

(b) How long is required to reach this height?
 To determine the maximum height, we use the same equation we used above,
</span>V^2 = Vo^2 + 2gh 
where Vo = 20 m/s. 
           g = -9.8 m/s^2
           V = 0 (since at the maximum height velocity is zero) 
0^2 = 20^2 + 2(-9.8)h 
<span>h = 20.41 m

(c) Why are there two answers for (b)?
There are two answers for b because it would travel a distance up and travel a distance down.</span>
5 0
3 years ago
Read 2 more answers
The wave height is equal to twice the _____.wave period wave height wave amplitude wave velocity wavelength
Archy [21]

The wave height is equal to twice the amplitude of the wave.

The wave height of a wave of given wave with amplitude, period and wavelength is equal to twice the amplitude of the wave.

The amplitude of a wave is the maximum displacement of the wave, starting from the zero position of the wave. The wave height measures twice the maximum displacement of the wave.

Thus, we can conclude that the wave height is equal to twice the amplitude of the wave.

Learn more here:brainly.com/question/21431500

4 0
3 years ago
A pure substance is anything that cannot be broken down or separated by _______________ means?
MatroZZZ [7]

Answer: Physical is the blank space

Explanation: Your welcome

3 0
4 years ago
Read 2 more answers
Calculate the wavelength associated with electrons moving with p.d of 1500v
Artist 52 [7]

Answer:

3.16X10∧-11 m

Explanation:

1/2 mv2 = qV (KE = Electric potential energy)

velocity = √2qV/m = √( 2X 1.6X10∧-19 X 1500/9.11X10∧-31)

2.3X10∧7m/s

now use De Broglie equation

λ = h/mv

= 6.62X10∧-34/( 9.11X10∧-31 X 2.3X10∧7)

3.16 X 10∧-11 m

or

use the above equations and substitute to get the final eqiation

λ = h/√(2mqV) = 3.16X 10∧-11 m

4 0
3 years ago
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