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nordsb [41]
3 years ago
8

A hair dryer draws 1 200 W, a curling iron draws 800 W, and an electric light fixture draws 500 W. If all three of these applian

ces are operating in parallel on a 120-V circuit, what is the total current drawn?
Physics
1 answer:
RoseWind [281]3 years ago
3 0

Answer:

Therefore,

The Total current drawn is 20.83 Ampere.

Explanation:

Given:

Voltage, V = 120 V

Power of Appliances,

P1 = 1200-W Hair dryer,

P2 = 800-W Curling iron,

P3 = 500-W Light

To Find:

Current  flowing in the line, I = ?

Solution:

We have Power formula,

Power = Voltage\times Current\\P=V\times I

Current for hair dryer,

P_{1}=V\times I_{1}

Substituting the values we get

1200=120\times I_{1}\\I_{1}=\dfrac{1200}{120}=10\ Ampere

Similarly for curling iron,

P_{2}=V\times I_{2}

800=120\times I_{2}\\I_{2}=\dfrac{800}{120}=6.6667\ Ampere

Similarly for electric light

P_{3}=V\times I_{3}

500=120\times I_{3}\\I_{3}=\dfrac{500}{120}=4.1667\ Ampere

As all three of these appliances are operating in parallel on a 120-V circuit,  the total current will be given as

I=I_{1}+I_{2}+I_{3}

Substituting the values we get

I=10+6.6667+4.1667=20.8334\approx 20.83\ Ampere

Therefore,

The Total current drawn is 20.83 Ampere.

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If a total of 1250 offspring were obtained from your cross, determine the number of offspring that you would expect to obtain th
irakobra [83]

Answer:

106 single crossover events

Explanation:

Total number of offspring = 1250

<u>Determine the number of offspring that would be expected </u>

( Rf between the genes vg and Pr ) * ( Total number of progeny )

  =   0.125 * 1250 ≈ 156 ( value for single and double crossovers )

next :

( value of the Rf of double crossovers ) * ( Total number of progeny )

= (0.322 * 0.125) = 0.04025  * 1250 = 50

Hence the number of offspring expected to obtain/represent a single crossover event between pr and vg

=  156 - 50 =  106

3 0
3 years ago
The spreading of waves behind an aperture is more for long wavelengths and less for short wavelengths.Less for long wavelengths
Allisa [31]

Answer:

Increase in wavelength of incident wave also increases the spread angle or spread of the interference pattern.

Explanation:

Solution:-

- The diffraction occurs when light bends in the same medium. The bending is the result of light waves "squeezing" through small openings or "curving" around sharp edges.

- Moreover, waves diffract best when the size of the diffraction opening (or grting or groove) corresponds to the size of the wavelength. Hence, light diffracts more through small openings than through larger openings.

- The formula for diffraction shows a direct relationship between the angle of diffraction (theta) and wavelength:

                                         d sin (θ) = m λ

Where,

     λ : Wavelength , θ : The spread angle , d : Slit opening or grating

- We can see that the wavelength λ and spread angle θ are related proportionally. So if we increase the wavelength of incident wave we also increase the spread angle or spread of the interference pattern.

5 0
4 years ago
In a longitudinal wave, the particles of matter in the medium vibrate by pushing together and moving apart. In a transverse wave
Lilit [14]

Answer:

C. The particles in longitudinal waves travel parallel to the direction of the wave, whereas the particles in transverse waves travel perpendicular to the direction of the wave.

Explanation:

Longitudinal waves are waves that propagates energy from their source by movement of particles in a direction parallel to the wave motion.

Transverse waves produce oscillations that are perpendicular to the direction of propagation.

  • Examples of longitudinal waves are sound waves, seismic p-waves
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A wave is a disturbance that transmits energy from one point to another.

8 0
3 years ago
The transfer of energy by electromagnetic
chubhunter [2.5K]
Either convection or thermal energy
6 0
3 years ago
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A mass of 0.4 kg hangs motionless from a vertical spring whose length is 0.95 m and whose unstretched length is 0.65 m. Next the
nexus9112 [7]

Answer:

Explanation:

spring constant of spring = mg / x

= .4 x 9.8 / ( .95 - .65 )

=13.07 N / m

energy stored in spring = 1/2 k x²

= .5 x 13.07 x ( 1.2 - .65 )²

= 1.976 J

Let it goes x m beyond its equilibrium position

Total energy at initial point

= 1.976 + 1/2 m v²

= 1.976 + .5 x .4 x 1.6²

= 2.488 J

energy at final point

= mgh + 1/2 k x²

.4 x 9.8 x  ( .55 + x ) + .5 x 13.07 x² = 2.488

6.535 x² + 2.156 + 3.92 x = 2.488

6.535 x² + 3.92 x - .332 = 0

x = .075 m

7.5 cm

4 0
3 years ago
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