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labwork [276]
3 years ago
9

Which statement demonstrates that ultraviolet (UV) rays are electromagnetic waves? A. They require a medium to travel. B. They d

on't require a medium to travel. C. The particles of the medium through which they travel vibrate perpendicularly to the direction of the wave. D. The particles of the medium through which they travel vibrate parallel to the direction of the wave. E. The particles in the medium through which they travel remain stationary.
Physics
2 answers:
Margaret [11]3 years ago
6 0

Answer:

B. they do NOT require a medium to travel  

Explanation:

ultraviolet rays requires no medium for its transmission

Sauron [17]3 years ago
4 0

B. They don't require a medium to travel.

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sergiy2304 [10]

Answer:

The minimum frequency of the coil is 7.1 Hz

Explanation:

Given;

number of turns, N = 200 turns

cross sectional area, A = 300 cm² = 300 x 10⁻⁴ m²

magnitude of magnetic field strength, B = 30 x 10⁻³ T

maximum value of the induced emf, E = 8 V

Maximum induced emf is given as;

E = NBAω

where

ω is angular velocity (ω = 2πf)

E = NBA2πf

where;

f is the minimum frequency, measured in hertz (Hz)

f = E / (NBA2π)

f = 8 / (200 x 30 x 10⁻³  x 300 x 10⁻⁴ x 2 x 3.142)

f = 7.073 Hz

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Therefore, the minimum frequency of the coil is 7.1 Hz

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3 years ago
Explain why a person who has runny nose is unable to detect smells clearly.
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May I please have brainliest?
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3 years ago
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A 25.0 g marble sliding to the right at 20.0 cm/s overtakes and collides elastically with a 10.0 g marble moving in the same dir
vovikov84 [41]
In collision that are categorized as elastic, the total kinetic energy of the system is preserved such that,

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The kinetic energy of the system before the collision is solved below.

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This value should also be equal to KE2, which can be calculated using the conditions after the collision.

KE2 = 6125 g cm²/s² = (0.5)(10)(22.1)² + (0.5)(25)(x²)

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3 years ago
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DaniilM [7]
I believe it would be a musical note
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show the trajectory of a body projected with an initial velocity vat an angle of departure thita is a paraboler​
Jobisdone [24]

Answer:

Let me look up a couple of things regarding this question.

Explanation:

Then I will get back to you.

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3 years ago
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