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2 years ago

A cellphone charger has a transformer with

Physics

1 answer:

Evgen [1.6K]2 years ago

6 0

Answer:

A.C → Alternating current.

D.C → Direct current

Explanation:

A.C is an abbreviation for Alternating current.

Alternating current is a type of current that flows sinusoidally or current that changes direction with time.

D.C is an abbreviation for Direct current.

This type of current flows only in one direction, i.e it doesn't change direction with time.

A rectifier can be used to convert A.C to D.C, allowing it to flow in one direction.

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If you wish to take a picture of a bullet traveling at 500 m/s, then a very brief flash of light produced by an RC discharge thr

Agata [3.3K]

Answer:

Resistance in the flash tube, $R=3.97\times 10^{-3}\ \Omega$

Explanation:

It is given that,

Speed of the bullet, v = 500 m/s

Distance between one RC constant, d = 1 mm = 0.001 m

Capacitance, $C=503\ \mu F=503\times 10^{-6}\ F$

The time constant of RC circuit is given by :

$\tau=RC$

R is the resistance in the flash tube

$R=\dfrac{\tau}{C}$ ..........(1)

Speed of the bullet is given by total distance divided by total time taken as :

$v=\dfrac{d}{\tau}$

$\tau=\dfrac{d}{v}$

$\tau=\dfrac{0.001}{500}$

$\tau=0.000002\ s$

Equation (1) becomes :

$R=\dfrac{0.000002}{503\times 10^{-6}}$

$R=3.97\times 10^{-3}\ \Omega$

So, the resistance in the flash tube is $3.97\times 10^{-3}\ \Omega$ . Hence, this is the required solution.

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2 years ago

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Elena-2011 [213]

A would be most useful (Carbon dating)

3 0

3 years ago

Ice core samples are used to measure…

blsea [12.9K]

Answer:

the correct answer is A

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2 years ago

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Condominiums usually require a monthly fee for various services. At $235 a month, how much would a homeowner pay over a period o

Ivahew [28]

Answer:

$28200

Explanation:

Since 1 year has 12 months, 10 years have 120 months.

If one has to pay $235 a month, in 120 months one has to pay $235 done 120 times, which is the product of both numbers:

$P=($235)(120)=$28200$

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2 years ago

This is a measure of resistance to motion, by an object.

Anarel [89]

Answer: inertial mass

The measure of resistance to motion by an object is the objects inertial mass

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3 years ago

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