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3 years ago

The energy of a photon of light is proportional to its frequency and proportional to its wavelength.

1 answer:

7 0

The energy of a photon of light is directly proportional to its frequency and <span>inversely</span> proportional to its wavelength.

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Sort each phrase into the type of nonfiction text it describes.

vivado [14]

Answer:

News Article= intends to inform readers

provides an unbiased point of view

reports on current events.

Editorial= intends to persuade readers

provides a biased point of view

uses evidence to support a claim

Explanation:

Make me Brainliest Answer =)

4 0

4 years ago

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Calculate the number of millimeters in 2.13 kilometer.

lapo4ka [179]

The answer is 2,130,000

6 0

4 years ago

When radioactive tracers are used for medical scans, the tracers both decay in the body via radiation, as well as being excreted

irinina [24]

Answer:

Effective half-time of the tracer is 3.6 days

Explanation:

The formula for calculating the decay due to excretion for the first process is ;

$\frac{dN_1}{dt } = - \lambda _e N_o$

here ;

$N_o$ = initial number of tracers

Then to the second process ; we have :

$\frac{dN_2}{dt } = - \lambda _e N_o$

The total decay is as a result of the overall process occurring ; we have :

$\frac{dN_{total}}{dt } = \frac{dN_1}{dt} + \frac{dN_2}{dt}$ ------ (1)

here ;

$\frac{dN_{total}}{dt } = \lambda _{total} N_o$

Putting the values in (1);we have :

$- \lambda _{Total} N_o = - \lambda_e N_o + ( -\lambda r N_o})$

$\lambda _{Total} = \lambda_e + \lambda r$

As we also know that:

$\frac{1}{t_{1/2}} = \frac{[t_{1/2}]_{radiation}+[t_{1/2}]_{excretion}}{[t_{1/2}]_{radiation}*[t_{1/2}]_{excretion}}$

$\frac{1}{t_{1/2}}_{effective}} = \frac{[t_{1/2}]_{radiation}+[t_{1/2}]_{excretion}}{[t_{1/2}]_{radiation}*[t_{1/2}]_{excretion}}$

$\frac{1}{t_{1/2}}_{effective}} = \frac{9+6}{9*6}$

$\frac{1}{t_{1/2}_{effective}}}=\frac{15}{54}$

$t_{1/2}_{effective}} = \frac{54}{15}$

= 3.6 days

5 0

4 years ago

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In the diagram below, what do the three numbered vectors represent?

vichka [17]

1) Magnetic field
2) Electric current
3) Force

4 0

3 years ago

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Doubling an object’s height will have what effect on its potential energy due to gravity?

timurjin [86]

Potential energy due to gravity = Ep = mgh [symbols have their usual meaning ]
Evidently, HALVING the mass will make Ep , HALF its previous value. So, It will be halved.

5 0

3 years ago

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The energy of a photon of light is ________ proportional to its frequency and ________ proportional to its wavelength.

The energy of a photon of light is proportional to its frequency and proportional to its wavelength.