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Fiesta28 [93]
3 years ago
9

What is the speed of sound for noise that travels 2 km in 5.8

Physics
1 answer:
earnstyle [38]3 years ago
8 0

Answer:

2.9

Explanation:

average speed=distance/time taken

=2/5.8

=2.9

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Does the galvanometer deflect to the left or the right when:________
igomit [66]

Complete question is;

Does the galvanometer deflect to the left or the right when

a) the magnet is being pushed in

b) the magnet is being pulled out

c) the magnet is being held steady?

Answer:

Option A - when the magnet is being pulled out

Explanation:

Faraday’s law of electromagnetic induction states that: “Voltage is induced in a circuit whenever relative motion exists between the conductor and the magnetic field, and the magnitude of the voltage will be proportional to the rate of change of the flux”.

Now, applying it to the question, When the magnet is moved towards the sensitive center of the galvanometer and then pulled out, the needle of the galvanometer will deflect away from its center position in one direction only but when it is held steady, the needle of the galvanometer will return back to zero.

7 0
3 years ago
A light bulb is rated at 25 W when operated at 120 V. How much charge enters (and leaves) the light bulb in 1. 0 min?
aleksklad [387]

The amount of charge enters (and leaves) is 12 Coulomb.

<h3 /><h3>How can we find the value of the amount of charge enters (and leaves)?</h3>

Here we are using the formula,

I=\frac{P}{V} and Q= I \times t

We are given,

P = Power of the light bulb = 25 Watt.

V = The amount of voltage where the light bulb operated = 120 Volt.

t= The time when charge enters (and leaves) the light bulb = 1.0 min = (1 \times 60) second = 60 S

We have to find,

I= The amount of current flows in the light bulb.

Q= The amount of charge enters (and leaves) the light bulb.

Now we substitute the values of known parameters in the first equation, we find that,

I=\frac{P}{V}=\frac{25}{120}

Or, I= 0.20 A

The amount of current flows in the light bulb is 0.20 Ampere.

Now, we put the value of I in the second equation,

Q= I \times t= 0.20 \times 60

Or, Q=12 C

So, from the above calculations we can see that the amount of charge enters (and leaves) the light bulb is 12 Coulomb.

Learn more about the light bulb:

brainly.com/question/8979272

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2 years ago
A particle starts with a speed of 12m/s and moves in a straight line in such a way that its speed increases by 4m/s every second
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Answer:

44m/s is the speed of that particle after 8 seconds

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A(n) ? can be used to represent the direction and strength of a force
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Units of force are the newton pound.
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The Mayans mapped out the phases of both the _____.
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The phases of the Moon and Venus

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