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2 years ago

1.Do parallel universe exist? How?

Physics

1 answer:

Harlamova29_29 [7]2 years ago

7 0

Answer:

Some physicists believe in a flatter version of multiple universes. ... But if the universe began at a finite point, as nearly every physicist agrees that it did, an alternate version of you likely doesn't exist, according to astrophysicist Ethan Siegel's 2015 Medium article.

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A resistor with R=300 ? and an inductor are connected in series across an ac source that has voltage amplitude 500 V. The rate a

qaws [65]

Answer:

impedance Z = 416.66 ohm

voltage across inducance V = 346.99 V

power factor = 0.720

Explanation:

given data

resistor R = 300

voltage amplitude = 500 V

resistor = 216 W

to find out

impedance and amplitude of the voltage and power factor

solution

we apply here average power formula that is

average power = I²×R ............1

I = $\frac{Vrms}{Z}$

average power = ( $\frac{Vrms}{Z}$ )²×R

Vrms = $\frac{1}{\sqrt{2} }$ × Vmax

Z = V × $\sqrt{\frac{R}{2P} }$

Z = 500 × $\sqrt{\frac{300}{2*216} }$

impedance Z = 416.66 ohm

and

we know voltage across inductor is here express as

V = I × X .............2

so here X will be by inductance

Z² = R² + (X)²

(X)² = 416.66² - 300²

X = 289.15 ohm

and I = $\frac{V}{Z}$

I = $\frac{500}{416.66}$

I = 1.20 A

so from equation 2

V = 1.20 × 289.15

voltage across inducance V = 346.99 V

and

average power = Vmax × Imax × cos∅

tan∅ = $\frac{289.15}{300}$

tan∅ = 43.95°

so power factor is

power factor = cos43.95°

power factor = 0.720

7 0

3 years ago

What is the wavelength in nm of a light whose first order bright band forms a

scoundrel [369]

The wavelength of the first order bright band light light is 714 nm .

Explanation:

We have to find the wavelength of the first order brightness of a light. Here we are using Huygen's principle of light.

The formula is

nλ =d sinθ

where, n is the order of maximum

λ is the wavelength of light

d is the distance between the lines on diffraction grating.

θ is the angle.

For the given equation n is 1 because the problem states that the light forms 1st order bright band

λ is unknown.

d = $\frac{1}{700,000}$ or 0.0000014 m

sin (30) = 0.5

so,

1(λ) = (0.0000014)(0.5)

= 0.0000000714

= 714 nm

Thus, The wavelength of the first order bright band light light is 714 nm .

3 0

3 years ago

Which object would have the greatest acceleration?

Andre45 [30]

Answer:

Explanation:

A and C are balanced, B has a resultant force of 5N right, and D has a resultant force of 20N right.

4 0

2 years ago

A family has a furnace that uses natural gas to heat their home. They are moving to an area that offers the option of using ener

Murrr4er [49]

The disadvantage will the family most likely face by making this switch is that solar power has a less reliable production of heat.Option A is correct.

<h3>What is a power plant?</h3>

A power plant is an industrial structure that generates electricity. The majority of power plants are linked to the electrical grid.

Nuclear power bare a form of the thermal power plant. You have a reactor where fission takes place and heat is generated, a heat exchanger that transports this heat to where it is needed.

Thermal power plant equipment converts this heat into electric energy, usually via a steam turbine.

The household will most likely experience a disadvantage from this decision in that solar power produces heat less consistently.

Hence option A is correct,

To learn more about the power plant, refer to the link;

brainly.com/question/7670779

#SPJ1

8 0

1 year ago

On a violin, the highest note Mandy can play is an A-note, which produces a sound wave with a high frequency. The lowest note sh

lora16 [44]

I think the answer would be: The G-note's wavelength is longer

Here are the formula to calculate wavelength

Wavelength = Wave speed/Frequency

Which indicates that the wavelength will become larger as the frequency became smaller.

6 0

2 years ago

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