The observed brightness of a star depends on which factors?
1 answer:
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(a) f = 5.00 × 10²⁰ Hz, E = 3.32 × 10⁻¹³ J;
(b) f = 1.20 × 10¹⁰ Hz, E = 7.96 × 10⁻²⁴J.
<h3>Explanation</h3>What's the similarity between a gamma ray and a microwave?
Both gamma rays and microwave rays are electromagnetic radiations. Both travel at the speed of light at in vacuum.
where
- f is the frequency of the electromagnetic radiation,
- c is the speed of light, and
is the wavelength of the radiation.
(a)
Convert all units to standard ones.
.
The unit of shall also be standard.
.
For each particle,
,
where
is the energy of the particle,
is the planck's constant where
, and
is the frequency of the particle.
.
(b)
Try the steps in (a) for this beam of microwave with
.
Expect the following results:
, and
.
Answer:
D.) It is between groups 13 to 18 because it is a non-metal.
Explanation:
Here we can see the periodic table and what each element is.
It is a non - metal because it is gaseous.
