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grin007 [14]
4 years ago
12

An echo is an example of sound wave

Physics
1 answer:
Ede4ka [16]4 years ago
4 0

Answer:

yes it is

Explanation:

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An ideal transformer has 60 turns in its primary coil and 360 turns in its secondary coil. If the input rms voltage for the 60-t
notka56 [123]

Answer:

720 V

Explanation:

Given that,

The number of turns in primary coil, N₁ = 60

The number of turns in secondary coil, N₂ = 360

The input rms voltage, V₁ = 120 V

We need to find the output rms voltage of the secondary coil . The relation between number of turns in primary coil - secondary coil to the input rms voltage to the output rms voltage is given by :

\dfrac{N_1}{N_2}=\dfrac{V_1}{V_2}\\\\V_2=\dfrac{N_2V_1}{N_2}\\\\V_2=\dfrac{360\times 120}{60}\\\\V_2=720\ V

<h3>So, the output rms voltage of the secondary coil is 720 V. Hence, the correct option is (b).</h3>
7 0
3 years ago
Is a paper clip a conducted or insulator
Leni [432]
<span>So we want to know is a paper clip a conductor or an insulator. A conductor is a material that doesn't resist very much to the flow of electric current. An insulator is totally oposite of a conductor, it gives a lot of resistane to the flow of electric current. Metals are mostly conductors while rubber, plastics are insulators. Since paper clips are mostly made out of metals, they are a conductor. </span>
5 0
3 years ago
Will the body be travelling with a constant speed or a constant acceleration if the distance travelled by the body is directly p
Anna35 [415]
Distance ( say d ) is directly proportional to time ( say t ) .
mathematically ,
d = kt
where k is constant if proportionality .
Now differentiating the above equation with respect to time ,
we get ;
v = k
=> velocity is constant .
=> No acceleration .
6 0
4 years ago
What would be the atomic number of an atom that is composed of 15 protons and 18 neutron?
Anuta_ua [19.1K]

Answer:

15

Explanation:

atomic no. = no. of protons

6 0
3 years ago
If mass of the planet is 10% less than that of
Leokris [45]

Answer:

25kg

Explanation:

The formula for acceleration due to gravity is:

g=\dfrac{GM}{r^2}

Here, G represents a constant and M represents the mass of the object. We don't need to know the actual values to solve this, then: We can just multiply by the amount they are multiplied relative to earth.

g=\dfrac{G(0.9M)}{(1.2r)^2}=0.625g

Multiplying this by the weight of the person on Earth of 40kg, you get 0.625*40=25kg.

Hope this helps!

4 0
3 years ago
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