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3 years ago

Select the correct images.

Physics

2 answers:

Studentka2010 [4]3 years ago

8 0

Answer:

Explanation:

Symbolic model is defined as the set of representation of something.

In the given figure I think it could be first, second and third.

According to me, first represent that the person is a home cook.

Second represent that lady is a model and is walking on the ramp.

Third represent that lady is a teacher.

Afina-wow [57]3 years ago

5 0

It could be the third and the first one.

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Answer this plsss<br> A mobile phone operates at 900 MHz. <br> What wavelength does it use?

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Answer:

The wavelength = 0.3333 meters at 900 MHz, therefore, = /4 = 0.08333 meters.

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3 years ago

Fizik

vekshin1

Answer:

P = 24.32 W

Explanation:

The question is, "Two resistors 5 Ω and 10 Ω are connected in parallel with a 9 V power supply. Calculate the output power of the power supply.".

The voltage of the power supply, V = 9 V

Resistor 1, R₁ = 5 Ω

R₂ = 10 Ω

The equivalent of parallel combination of resistors is given by :

$\dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}\\\\\dfrac{1}{R_{eq}}=\dfrac{1}{5}+\dfrac{1}{10}\\\\R_{eq}=3.33\ \Omega$

The power of the output is given by :

$P=\dfrac{V^2}{R_{eq}}\\\\=\dfrac{9^2}{3.33}\\\\P=24.32\ W$

So, the output power is equal to 24.32 W.

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3 years ago

1. If a radioactive sample has an initial count rate of 600 Bq. What is its count

Virty [35]

Answer:

See explanation

Explanation:

Since the original count rate is 600 Bq,

i) after 1 half life, the count rate decreases to 1/2 of 600 Bq = 300 Bq

ii) after 2 half lives, the count rate decreases to 1/4 of 600 = 150 Bq

iii) after 3 half lives, the count rate decreases to 1/6 of 600 = 100 Bq

iv) after 4 half lives, the count rate decreases to 1/8 of 600 = 75 Bq

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3 years ago

If a magnet is broken into two pieces, what happens to the magnetic poles?

Nikitich [7]

Answer:

Each piece will have a north pole and a south pole

Explanation:

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4 years ago

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4. A force of 185.6 N is being applied to a square of side length 3 m. Work out the

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Answer:

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3 years ago