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tatyana61 [14]
3 years ago
10

Explain electric circuits. Be sure to include the features, the roles, and the types. Help PLEASEEEE!!

Physics
1 answer:
maksim [4K]3 years ago
5 0
If there was any way to do that, then your teacher wouldn't
need to keep you coming into class every day and doing
homework every night.  She could just give you the 3 or 4
paragraphs and a few pictures that you're asking me for,
and bada-bing ! you'd know it !

The time it takes, and the amount of homework it takes, is
EXACTLY the time you spent hearing about it in class.

(Unless you're some kind of genius savant prodigy, which
you're not and I'm not.)
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A person hears the echo of his own voice from a distant hill after 2 seconds. How far away is the person from the hill, if the s
olga nikolaevna [1]

Answer: 330 m

Explanation:

The speed of sound V is defined as the distance traveled by the sound wave d in a especific time t:  

V=\frac{d}{t}  

Where:  

V=330 m/s is the speed of sound  

t=\frac{2 s}{2}=1 s is half the time the sound wave travels since the person speaks, the sound wave hits the hill and then returns to the person again  as an echo

d is the distance between the person and the hill

So, we have to find d:

d=Vt

d=(330 m/s)(1 s)

Finally:

d=330 m

4 0
2 years ago
The change in state of a liquid to a gas​
ioda

evaporation (if that's to fill in the blanks question)

6 0
3 years ago
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What precautions should be taken on board a vessel during a lightning storm?
dusya [7]

<span>The precautions which should be taken on board a vessel during a lightning storm are:</span>

<span>(i)  </span>All electrical equipments should be unplugged.

<span>(ii) </span>Keep yourself away from all metal parts such as engines, metal tanks, stoves etc.

<span>(iii) </span><span>Stay inside the boat. </span>

7 0
3 years ago
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A 17-car train standing on the siding is started in motion by the train’s engine. 9 cm slack is between each of the cars, which
BaLLatris [955]

Answer:

4 seconds

Explanation:

There are links between cars, they are in between

1-2, 2-3, 3-4, 4-5, 5-6, 6-7, 7-8, 8-9, 9-10, 10-11, 11-12, 12-13, 13-14, 14-15, 15-16, 16-17.

Here 1 represents the first car which is firmly attached to the engine. So, there are 16 links and each link has a slack of 9 m.

So, total slack

9×16 = 144 cm

Speed of train = 36 cm/s

\text{Time taken by the pulse}=\frac{Length}{speed}\\\Rightarrow \text{Time taken by the pulse}=\frac{144}{36}\\\Rightarrow \text{Time taken by the pulse}=4\ s

Time taken by the pulse to travel the length of train is 4 seconds.

6 0
3 years ago
Which of the following statements is always true?
Gwar [14]

Answer: B

Explanation:

An unbalanced force (net force) acting on an object changes its speed and/or direction of motion. An unbalanced force is an unopposed force that causes a change in motion.

7 0
3 years ago
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