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Sveta_85 [38]
3 years ago
14

Động cơ khởi động của một ô tô bị quay chậm , thợ cơ khí quyết định phải thay động cơ , dây cap hoặc acquy. Hướng dẫn sử dụng nó

i rằng acquy 12v phải có điện trở 0.002 ( ôm) , động cơ có điện trở không quá 0.2 (ôm) và dây cáp có điện trở không quá 0.04 ( ôm) , thợ cơ khí cho động cơ chạy đo được là 11,4v trên acquy , 3v trên cáp và dòng bằng 50 A , vậy phần nào bị hỏng ?
Physics
1 answer:
tester [92]3 years ago
8 0

Answer:

Việc nắm được các thông số của bình ắc quy cho xe máy sẽ giúp bạn ... Khi di chuyển với tốc độ chậm hoặc gặp phải tắc đường, đối với xe có ... sau: ắc quy có điện áp 12V, CCA = 600, có nghĩa là ắc quy có thể cung cấp

Explanation:

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Artemon [7]

Answer:

Option D

The frequency

Explanation:

The speed of wave is depedant only on the wavelength and frequency of waves since it is given by s=fw where s is the speed, f is frequency and w is the wavelength. Since the options given has only one factor, that is frequency, hence option D is correct. In case we had wavelength could be among the options, both would be correct.

5 0
3 years ago
A ball is dropped from a height of 20 meters. At what height does the ball have a velocity of 10 meters/second?
borishaifa [10]

Answer:B

Explanation:

Initial velocity, u=0m/s

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a=+g=9.8m/s*s

Using v*v=u*u+2gs

v*v=0+2*9.8*20

v*v=392

v=19.8

When s=20m, v = 19.8m/s

Therefore when v = 10m/s, s= 10*20/19.8

s =10.1m

6 0
3 years ago
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koban [17]

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3 years ago
Describe the motion of a swing that requires 6 seconds to complete one cycle. What is its period and the frequency? Round to the
shutvik [7]

Period = 6 seconds and frequency = 0.167Hz .

<u>Explanation:</u>

We have , the motion of a swing that requires 6 seconds to complete one cycle. Period is the amount of time needed to complete one oscillation . And in question it's given that 6 seconds is needed to complete one cycle. Hence ,Period of the motion of a swing is 6 seconds . Frequency is the number of vibrations produced per second and is calculated with the formula of  \frac{1}{t} . SI unit of frequency is Hertz or Hz. We know that time period is 6 seconds so frequency =   \frac{1}{t}

⇒ frequency = \frac{1}{time}

⇒ frequency = \frac{1}{6}

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B

Explanation:

6 0
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