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Triss [41]
3 years ago
6

Which electromagnetic waves have the shortest wavelengths and highest frequencies?

Physics
2 answers:
eduard3 years ago
6 0
The correct answer is A. Gamma Rays.  They have the shortest wave-length, and the highest frequency.  

Hope I helped.  :)
Usimov [2.4K]3 years ago
3 0

Answer: Gamma rays

Explanation: The given waves belong to the electromagnetic spectrum which consists of different electromagnetic radiations arranged in terms of increasing wavelengths or decreasing frequencies.

E= h\times \nu

\nu=\frac{c}{\lambda}

Thus E=\frac{h\times c}{\lambda}

E= energy

\nu= frequency

c = speed of light

\lambda = wavelength

Thus frequency and wavelength are inversely related. The waves having high energies ave high frequencies and have shorter wavelengths.

Thus gamma rays having highest energy have highest frequency and shortest wavelength.


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3. A force is exerted on a positively-charged particle that moves the particle in the direction opposite to that of an electric
NikAS [45]

Answer:

a) The work done on the particle has a positive  sign.

Explanation:

When a positive charge is placed in a electric field , a force is exerted by electric field along the direction of the electric field . But the external force is acting on it so that displacement is opposite to the field . That means the external force is acting opposite to electric force on the charged particle.

The displacement is along the external force applied so both force and displacement are positive . Hence work done is positive .

Work done by electric field is negative , because displacement and electric force are opposite.

8 0
3 years ago
If a 1.3 kg mass stretches a spring 4 cm, how much will a 5.8 kg mass stretch the
Likurg_2 [28]

Answer:

17.8cm

Explanation:

1.3kg --> 4cm

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Express newton pascal joule and watt in fundamental unit​
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3 years ago
A charge alters the space around it. What is this alteration of space called?
iogann1982 [59]

Answer: electric field

Explanation: when a charge is placed in space, it alters the space around it by creating an electric field.

This electric field has the ability to exert a force (f) on any test charge(q) placed within this vicinity.

This is the reason why a charge can either attract or repel another charge.

6 0
3 years ago
What is the wavelength of a monochromatic light beam, where the photon energy is 2.70 × 10^−19 J? (h = 6.63 ×10^−34 J⋅s, c = 3.0
SOVA2 [1]

Answer:

Wavelength = 736.67 nm

Explanation:

Given

Energy of the photon = 2.70 × 10⁻¹⁹ J

Considering:

Energy=h\times frequency

where, h is Plank's constant having value as 6.63 x 10⁻³⁴ J.s

The relation between frequency and wavelength is shown below as:

c = frequency × Wavelength

Where, c is the speed of light having value = 3×10⁸ m/s

So, Frequency is:

Frequency = c / Wavelength

So,  Formula for energy:

Energy=h\times \frac {c}{\lambda}

Energy = 2.70 × 10⁻¹⁹ J

c = 3×10⁸ m/s

h = 6.63 x 10⁻³⁴ J.s

Thus, applying in the formula:

2.70\times 10^{-19}=6.63\times 10^{-34}\times \frac {3\times 10^8}{\lambda}

Wavelength = 736.67 × 10⁻⁹ m

1 nm = 10⁻⁹ m

So,

<u>Wavelength = 736.67 nm</u>

8 0
3 years ago
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