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3 years ago

What does the electric field strength tell about the electric firld?

Physics

1 answer:

Solnce55 [7]3 years ago

8 0

Answer:

Explanation:

The region around a charged particle where another charged particle experiences a force of attraction or repulsion is called electric field.

The strength of electric field is defined as the force experienced by the unit positive test charge.

E = F / q

Electric field strength is a vector quantity and it is measured in newton per coulomb.

Where, F is the force of attraction or repulsion between the two charges and q is the test charge on which the electric field strength is to be calculated.

The strength of electric field is more if the field is strong. It means more be the electric field strength at a point more be the electric field.

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A microwave oven operates with sinusoidal microwaves at a frequency of 2400 MHz. The height of the oven cavity is 25 cm and the

Degger [83]

Answer:

F = 2 × 10⁻³ N

Explanation:

Given:

frequency, f = 2400 MHz

Height, h = 25cm = 0.25 m

Area of the base, A = 30 cm x 30 cm = 900 cm² = 0.09 m²

Energy of the microwave, E = 0.50 mJ = 0.5 x 10⁻³ J

Now, the time taken by the wave from top to the base, t = h/c

here, c is the speed of the light

thus,

t = 0.25/(3 x 10⁸) = 8.33 x 10⁻¹⁰ s

The radiation pressure $P_r$ = Intensity/c

now, the intensity is given as:

I = Power/ area

also,

Power = Energy/ time = 0.5 x 10⁻³ J/8.33 x 10⁻¹⁰ s = 600000 W

thus,

I = 600000 W/ 0.09 m² = 6666666.6 W/m²

substituting the value in the formula for pressure due to radiation, we have

$P_r$ = 6666666.6 W/m²/(3 x 10⁸)

also

pressure = Force/ area

thus,

Force/ area = 6666666.6 W/m²/(3 x 10⁸)

Force (F) = (6666666.6 W/m² × 0.09 m²)/(3 x 10⁸)

F = 2 × 10⁻³ N

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3 years ago

Read 2 more answers

In general, which type of planet would you expect to cause the largest doppler shift in the spectrum of its star?.

PilotLPTM [1.2K]

A giant (massive) planet close to the star is expected to cause the largest Doppler shift in the star's spectrum.

<h3>What is the Doppler Shift Method for Detecting Exoplanets?</h3>

Doppler spectroscopy is used to capture periodic velocity shifts in stellar spectra caused by orbiting giant planets. (This method is also known as the radial velocity method.)
The Doppler method, which is most commonly used to find exoplanets, is most suitable to look for very massive planets orbiting near their parent stars

<h3>What does the Doppler method tell us about planets? </h3>

The Doppler shift data can tell us something about the mass of the planet and the shape of its orbit. Since the Doppler shift only knows how fast it approaches and moves away from Earth, it is not possible to determine the exact mass of the planet without knowing the inclination of its orbit. Doppler data give a lower bound on mass.

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1 year ago

The fact that large elliptical galaxies are much more common in the central regions of galaxy clusters than elsewhere in the uni

Alenkinab [10]

The fact that large elliptical galaxies are more common in central galaxy clusters suggests that collisions play a role in the formation of these galaxies.

<h3>What is galaxy formation?</h3>

Galaxy formation is a physical phenomenon where molecular clouds of dust concentrate and thus first generate stars.

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Collisions are a relatively frequent process in clusters (groups) of galaxies that are formed by crashes with other galaxies.

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3 years ago

Difference between force and acceleration

galina1969 [7]

Force your doing it purposely and acceleration it’s just happening

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