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3 years ago

7

A solar charging system produces 14.5 volts on a sunny day the currents flows through the circuit at 43.5 ramps what is the resi

stance of the circuit

1 answer:

brilliants [131]3 years ago

8 0

Eeeeeeeeeeeeeeeeeeeee

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The weight of a metal bracelet is measured to be 0.10400 N in air and 0.08400 N when immersed in water. Find its density.

Anna007 [38]

Answer:

The density of the metal is 5200 kg/m³.

Explanation:

Given that,

Weight in air= 0.10400 N

Weight in water = 0.08400 N

We need to calculate the density of metal

Let $\rho_{m}$ be the density of metal and $\rho_{w}$ be the density of water is 1000kg/m³.

V is volume of solid.

The weight of metal in air is

$W =0.10400\ N$

$mg=0.10400$

$\rho V g=0.10400$

$Vg=\dfrac{0.10400}{\rho_{m}}$ .....(I)

The weight of metal in water is

Using buoyancy force

$F_{b}=0.10400-0.08400$

$F_{b}=0.02\ N$

We know that,

$F_{b}=\rho_{w} V g$ ....(I)

Put the value of $F_{b}$ in equation (I)

$\rho_{w} Vg=0.02$

Put the value of Vg in equation (II)

$\rho_{w}\times\dfrac{0.10400}{\rho_{m}}=0.02$

$1000\times\dfrac{0.10400}{0.02}=\rho_{m}$

$\rho_{m}=5200\ kg/m^3$

Hence, The density of the metal is 5200 kg/m³.

6 0

4 years ago

I'm a little bit unsure about this question.

slava [35]

Answer:

Option C. 4 Hz

Explanation:

To know the correct answer to the question given above, it is important we know the definition of frequency.

Frequency can simply be defined as the number of complete oscillations or circles made in one second.

Considering the diagram given above, the wave passes through the medium over a period of one second.

Thus, we can obtain the frequency by simply counting the numbers of complete circles made during the period.

From the diagram given above,

The number of circles = 4

Thus,

The frequency is 4 Hz

8 0

3 years ago

\Parts of a device that use radio waves. On the left is a box labeled A. On the right is a box labeled B. There is a vector poin

Elodia [21]

The radio waves travels between the two boxes and they were travelling through air,

Box B captures, amplifies and demodulates radio waves.
Box A modulates, amplifies and send out radio waves.

<h3>What are radio waves?</h3>

Radio waves are the type of radiation from the electromagnetic spectrum.
The radio waves can be used in communication technologies like computer, phones, radios , etc..
Radio waves have lower frequencies but longer wavelength.
These devices will get signal and then it transmit as mechanical waves through sound.

In that way, the radio waves from box A to B through air, the box A will gets the signal, and then modulates, amplifies and then it send out radio waves. Through the air, Box B will captures, amplifies and demodulates radio waves.

Learn more about radio waves,

brainly.com/question/13989450

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2 years ago

The puffin is a bird that lives__________the sea.

Gnesinka [82]

What I found was from another website and it said "For most of the year, Atlantic puffins live on the open ocean, with a range spanning from the eastern coast of Canada and the northern United States to the western coast of Europe and northern Russia. 60% of the world's puffins live near Iceland. Puffins are specially adapted to living<span> on the open sea." here is the link https://animalfactguide.com/animal-facts/atlantic-puffin/

I put the link and a picture so it hopefully won't be deleted for plagiarism.
</span>

6 0

4 years ago

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Which of the following is a compound machine

Ivahew [28]

The answer is c.

Hope this helps!!!!!!!!!!

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4 years ago

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